Geopolymer foams: An overview of recent advancements

Davidovits, 1991, Geopolymers, J Therm Anal, 37, 1633, 10.1007/BF01912193 Komnitsas, 2007, Geopolymerisation: a review and prospects for the minerals industry, Miner Eng, 20, 1261, 10.1016/j.mineng.2007.07.011 Davidovits, 2017, Geopolymers: ceramic-like inorganic polymers, J Ceram Sci Technol, 8, 335 Deb, 2014, The effects of ground granulated blast-furnace slag blending with fly ash and activator content on the workability and strength properties of geopolymer concrete cured at ambient temperature, Mater Des, 62, 32, 10.1016/j.matdes.2014.05.001 Sankar, 2018, Sodium silicate activated slag-fly ash binders: Part I – Processing, microstructure, and mechanical properties, J Am Ceram Soc, 101, 2228, 10.1111/jace.15391 Temuujin, 2009, Effect of mechanical activation of fly ash on the properties of geopolymer cured at ambient temperature, J Mater Process Technol, 209, 5276, 10.1016/j.jmatprotec.2009.03.016 Davidovits J. Synthesis of new high-temperature geo-polymers for reinforced plastics/composites. SPE PACI’EC ’79, Soc Plast Eng Brookf Center, USA; 1979. p. 151–4. Davidovits, 1994, Geopolymers: man-made rock geosynthesis and the resulting development of very early high strngth cement, J Mater Educ, 16, 91 Tchakouté, 2017, Mechanical and microstructural properties of metakaolin-based geopolymer cements from sodium waterglass and phosphoric acid solution as hardeners: a comparative study, Appl Clay Sci, 140, 81, 10.1016/j.clay.2017.02.002 Mathivet, 2019, Acid-based geopolymers: Understanding of the structural evolutions during consolidation and after thermal treatments, J Non Cryst Solids, 512, 90, 10.1016/j.jnoncrysol.2019.02.025 Louati, 2016, Acid based geopolymerization kinetics: Effect of clay particle size, Appl Clay Sci, 132–133, 571, 10.1016/j.clay.2016.08.007 Mohd Salahuddin, 2015, A review on thermophysical evaluation of alkali-activated geopolymers, Ceram Int, 41, 4273, 10.1016/j.ceramint.2014.11.119 Luukkonen, 2018, One-part alkali-activated materials: a review, Cem Concr Res, 103, 21, 10.1016/j.cemconres.2017.10.001 Singh, 2015, Geopolymer concrete: A review of some recent developments, Constr Build Mater, 85, 78, 10.1016/j.conbuildmat.2015.03.036 Naser, 2019, Extraterrestrial construction materials, Prog Mater Sci, 105, 100577, 10.1016/j.pmatsci.2019.100577 Shi, 2011, New cements for the 21st century: The pursuit of an alternative to Portland cement, Cem Concr Res, 41, 750, 10.1016/j.cemconres.2011.03.016 Provis, 2015, Advances in understanding alkali-activated materials, Cem Concr Res, 78, 110, 10.1016/j.cemconres.2015.04.013 Duxson, 2007, Geopolymer technology: the current state of the art, J Mater Sci, 42, 2917, 10.1007/s10853-006-0637-z Duxson, 2005, Understanding the relationship between geopolymer composition, microstructure and mechanical properties, Colloids Surf A Physicochem Eng Asp, 269, 47, 10.1016/j.colsurfa.2005.06.060 Duxson, 2007, The role of inorganic polymer technology in the development of “green concrete”, Cem Concr Res, 37, 1590, 10.1016/j.cemconres.2007.08.018 Provis, 2014, Geopolymers and related alkali-activated materials, Annu Rev Mater Res, 44, 299, 10.1146/annurev-matsci-070813-113515 Davidovits, 2015 McLellan, 2011, Costs and carbon emissions for geopolymer pastes in comparison to ordinary portland cement, J Clean Prod, 19, 1080, 10.1016/j.jclepro.2011.02.010 Assi, 2018, Sustainable concrete: building a greener future, J Clean Prod, 198, 1641, 10.1016/j.jclepro.2018.07.123 Bakharev, 2005, Resistance of geopolymer materials to acid attack, Cem Concr Res, 35, 658, 10.1016/j.cemconres.2004.06.005 Nematollahi, 2014, Effect of different superplasticizers and activator combinations on workability and strength of fly ash based geopolymer, Mater Des, 57, 667, 10.1016/j.matdes.2014.01.064 Andini, 2008, Coal fly ash as raw material for the manufacture of geopolymer-based products, Waste Manag, 28, 416, 10.1016/j.wasman.2007.02.001 Gonzalez, 2019, Modifications of basic-oxygen-furnace slag microstructure and their effect on the rheology and the strength of alkali-activated binders, Cem Concr Compos, 97, 143, 10.1016/j.cemconcomp.2018.12.013 Cheng, 2003, Fire-resistant geopolymer produce by granulated blast furnace slag, Miner Eng, 16, 205, 10.1016/S0892-6875(03)00008-6 Novais, 2016, Waste glass from end-of-life fluorescent lamps as raw material in geopolymers, Waste Manag, 52, 245, 10.1016/j.wasman.2016.04.003 Torres-Carrasco, 2015, Waste glass in the geopolymer preparation. Mechanical and microstructural characterisation, J Clean Prod, 90, 397, 10.1016/j.jclepro.2014.11.074 Zhang, 2014, Geopolymer foam concrete: an emerging material for sustainable construction, Constr Build Mater, 56, 113, 10.1016/j.conbuildmat.2014.01.081 Provis, 2018, Alkali-activated cementitious materials, Cem Concr Res, 114, 40, 10.1016/j.cemconres.2017.02.009 Van Deventer, 2012, Technical and commercial progress in the adoption of geopolymer cement, Miner Eng, 29, 89, 10.1016/j.mineng.2011.09.009 Feng, 2015, Development of porous fly ash-based geopolymer with low thermal conductivity, Mater Des, 65, 529, 10.1016/j.matdes.2014.09.024 Prud’homme, 2010, Silica fume as porogent agent in geo-materials at low temperature, J Eur Ceram Soc, 30, 1641, 10.1016/j.jeurceramsoc.2010.01.014 Zhang, 2015, Mechanical, thermal insulation, thermal resistance and acoustic absorption properties of geopolymer foam concrete, Cem Concr Compos, 62, 97, 10.1016/j.cemconcomp.2015.03.013 Luna-Galiano, 2018, Fly ash based geopolymeric foams using silica fume as pore generation agent. Physical, mechanical and acoustic properties, J Non Cryst Solids, 500, 196, 10.1016/j.jnoncrysol.2018.07.069 Rickard, 2014, Performance of solid and cellular structured fly ash geopolymers exposed to a simulated fire, Cem Concr Compos, 48, 75, 10.1016/j.cemconcomp.2013.09.002 Rickard, 2013, Performance of fibre reinforced, low density metakaolin geopolymers under simulated fire conditions, Appl Clay Sci, 73, 71, 10.1016/j.clay.2012.10.006 Ge, 2015, Preparation of geopolymer-based inorganic membrane for removing Ni2+from wastewater, J Hazard Mater, 299, 711, 10.1016/j.jhazmat.2015.08.006 Novais, 2016, Novel porous fly-ash containing geopolymer monoliths for lead adsorption from wastewaters, J Hazard Mater, 318, 631, 10.1016/j.jhazmat.2016.07.059 Novais, 2016, Novel porous fly ash-containing geopolymers for pH buffering applications, J Clean Prod, 124, 395, 10.1016/j.jclepro.2016.02.114 Novais, 2018, High pH buffer capacity biomass fly ash-based geopolymer spheres to boost methane yield in anaerobic digestion, J Clean Prod, 178, 10.1016/j.jclepro.2018.01.033 Alzeer, 2018, Synthesis and catalytic properties of new sustainable aluminosilicate heterogeneous catalysts derived from fly ash, ACS Sustain Chem Eng, 6, 5273, 10.1021/acssuschemeng.7b04923 Alzeer, 2016, Porous aluminosilicate inorganic polymers (geopolymers): a new class of environmentally benign heterogeneous solid acid catalysts, Appl Catal A Gen, 524, 173, 10.1016/j.apcata.2016.06.024 Sharma, 2015, Calcium-modified hierarchically porous aluminosilicate geopolymer as a highly efficient regenerable catalyst for biodiesel production, RSC Adv, 5, 65454, 10.1039/C5RA01823D Alzeer, 2019, Fly ash-based geopolymers as sustainable bifunctional heterogeneous catalysts and their reactivity in friedel-crafts acylation reactions, Catalysts, 9 Alzeer, 2017, Facile synthesis of new hierarchical aluminosilicate inorganic polymer solid acids and their catalytic performance in alkylation reactions, Microporous Mesoporous Mater, 241, 316, 10.1016/j.micromeso.2016.12.018 Bai, 2018, Processing, properties and applications of highly porous geopolymers: a review, Ceram Int, 44, 16103, 10.1016/j.ceramint.2018.05.219 Amran, 2015, Properties and applications of foamed concrete; A review, Constr Build Mater, 101, 990, 10.1016/j.conbuildmat.2015.10.112 Sandin, 2018, Environmental impact of textile reuse and recycling – a review, J Clean Prod, 184, 353, 10.1016/j.jclepro.2018.02.266 Le Hesran, 2019, Operations scheduling for waste minimization: a review, J Clean Prod, 206, 211, 10.1016/j.jclepro.2018.09.136 Rasaki, 2019, Geopolymer for use in heavy metals adsorption, and advanced oxidative processes: a critical review, J Clean Prod, 213, 42, 10.1016/j.jclepro.2018.12.145 Bell, 2008, Preparation of Ceramic foams from metakaolin-based geopolymer gels, Ceram Eng Sci Proc, 97 Kränzlein, 2018, Metal powders as foaming agents in fly ash based geopolymer synthesis and their impact on the structure depending on the Na/Al ratio, Cem Concr Compos, 90, 161, 10.1016/j.cemconcomp.2018.02.009 Prud’homme, 2011, In situ inorganic foams prepared from various clays at low temperature, Appl Clay Sci, 51, 15, 10.1016/j.clay.2010.10.016 Henon, 2013, Potassium geopolymer foams made with silica fume pore forming agent for thermal insulation, J Porous Mater, 20, 37, 10.1007/s10934-012-9572-3 Bai, 2017, Open-cell phosphate-based geopolymer foams by frothing, Mater Lett, 188, 379, 10.1016/j.matlet.2016.11.103 Bai, 2016, High strength metakaolin-based geopolymer foams with variable macroporous structure, J Eur Ceram Soc, 36, 4243, 10.1016/j.jeurceramsoc.2016.06.045 Stolz, 2018, Mechanical, thermal and acoustic properties of cellular alkali activated fly ash concrete, Cem Concr Compos, 94, 24, 10.1016/j.cemconcomp.2018.08.004 Cilla, 2014, Geopolymer foams by gelcasting, Ceram Int, 40, 5723, 10.1016/j.ceramint.2013.11.011 Hajimohammadi, 2017, Alkali activated slag foams: the effect of the alkali reaction on foam characteristics, J Clean Prod, 147, 330, 10.1016/j.jclepro.2017.01.134 Rasouli, 2015, Fabrication and properties of microporous metakaolin-based geopolymer bodies with polylactic acid (PLA) fibers as pore generators, Ceram Int, 41, 7872, 10.1016/j.ceramint.2015.02.125 Okada, 2011, Capillary rise properties of porous geopolymers prepared by an extrusion method using polylactic acid (PLA) fibers as the pore formers, J Eur Ceram Soc, 31, 461, 10.1016/j.jeurceramsoc.2010.10.035 Franchin, 2015, Porous geopolymer components through inverse replica of 3D printed sacrificial templates, J Ceram Sci Technol, 6, 105 Papa, 2015, Synthesis of porous hierarchical geopolymer monoliths by ice-templating, Microporous Mesoporous Mater, 215, 206, 10.1016/j.micromeso.2015.05.043 Papa, 2016, Insights into the macroporosity of freeze-cast hierarchical geopolymers, RSC Adv, 6, 24635, 10.1039/C6RA02232D Panda, 2018, Investigation of the rheology and strength of geopolymer mixtures for extrusion-based 3D printing, Cem Concr Compos, 94, 307, 10.1016/j.cemconcomp.2018.10.002 Panda, 2018, Additive manufacturing of geopolymer for sustainable built environment, J Clean Prod, 167, 281, 10.1016/j.jclepro.2017.08.165 Panda, 2018, Experimental study on mix proportion and fresh properties of fly ash based geopolymer for 3D concrete printing, Ceram Int, 44, 10258, 10.1016/j.ceramint.2018.03.031 Bai, 2017, High-porosity geopolymer foams with tailored porosity for thermal insulation and wastewater treatment, J Mater Res, 32, 3251, 10.1557/jmr.2017.127 Franchin, 2017, Direct ink writing of geopolymeric inks, J Eur Ceram Soc, 37, 2481, 10.1016/j.jeurceramsoc.2017.01.030 Xia, 2016, Method of formulating geopolymer for 3D printing for construction applications, Mater Des, 110, 382, 10.1016/j.matdes.2016.07.136 Medpelli, 2014, Geopolymer with hierarchically meso-/macroporous structures from reactive emulsion templating, J Am Ceram Soc, 97, 70, 10.1111/jace.12724 Glad, 2015, Highly porous geopolymers through templating and surface interactions, J Am Ceram Soc, 98, 2052, 10.1111/jace.13584 Cantarel, 2018, Geopolymer assembly by emulsion templating: emulsion stability and hardening mechanisms, Ceram Int, 44, 10558, 10.1016/j.ceramint.2018.03.079 Cilla, 2014, Open cell geopolymer foams by a novel saponification/peroxide/gelcasting combined route, J Eur Ceram Soc, 34, 3133, 10.1016/j.jeurceramsoc.2014.04.001 Vaou, 2010, Thermal insulating foamy geopolymers from perlite, Miner Eng, 23, 1146, 10.1016/j.mineng.2010.07.015 Shu-heng, 2010, Preparation of phosphoric acid-based porous geopolymers, Appl Clay Sci, 50, 600, 10.1016/j.clay.2010.10.004 Ducman, 2016, Characterization of geopolymer fly-ash based foams obtained with the addition of Al powder or H2O2 as foaming agents, Mater Charact, 113, 207, 10.1016/j.matchar.2016.01.019 Masi, 2014, A comparison between different foaming methods for the synthesis of light weight geopolymers, Ceram Int, 40, 13891, 10.1016/j.ceramint.2014.05.108 Palmero, 2015, Geopolymer technology for application-oriented dense and lightened materials. Elaboration and characterization, Ceram Int, 41, 12967, 10.1016/j.ceramint.2015.06.140 Novais, 2016, Porous biomass fly ash-based geopolymers with tailored thermal conductivity, J Clean Prod, 119, 99, 10.1016/j.jclepro.2016.01.083 Novais, 2018, Influence of water and aluminium powder content on the properties of waste-containing geopolymer foams, Ceram Int, 44, 6242, 10.1016/j.ceramint.2018.01.009 Dembovska, 2017, The use of different by-products in the production of lightweight alkali activated building materials, Constr Build Mater, 135, 315, 10.1016/j.conbuildmat.2017.01.005 Novais, 2018, Innovative application for bauxite residue: red mud-based inorganic polymer spheres as pH regulators, J Hazard Mater, 358, 69, 10.1016/j.jhazmat.2018.06.047 Wu, 2018, Preparation and characterization of ultra-lightweight foamed geopolymer (UFG) based on fly ash-metakaolin blends, Constr Build Mater, 168, 771, 10.1016/j.conbuildmat.2018.02.097 Papa, 2016, Porosity and insulating properties of silica-fume based foams, Energy Build, 131, 223, 10.1016/j.enbuild.2016.09.031 Alghamdi, 2018, Novel synthesis of lightweight geopolymer matrices from fly ash through carbonate-based activation, Mater Today Commun, 17, 266, 10.1016/j.mtcomm.2018.09.014 Petlitckaia, 2019, Design of lightweight metakaolin based geopolymer foamed with hydrogen peroxide, Ceram Int, 45, 1322, 10.1016/j.ceramint.2018.10.021 Bai, 2017, High-porosity geopolymer membrane supports by peroxide route with the addition of egg white as surfactant, Ceram Int, 43, 2267, 10.1016/j.ceramint.2016.10.205 Samson, 2017, Thermomechanical performance of blended metakaolin-GGBS alkali-activated foam concrete, Constr Build Mater, 157, 982, 10.1016/j.conbuildmat.2017.09.146 Bai, 2018, Porosity, mechanical and insulating properties of geopolymer foams using vegetable oil as the stabilizing agent, J Eur Ceram Soc, 38, 799, 10.1016/j.jeurceramsoc.2017.09.021 Kamseu, 2012, Bulk composition and microstructure dependence of effective thermal conductivity of porous inorganic polymer cements, J Eur Ceram Soc, 32, 1593, 10.1016/j.jeurceramsoc.2011.12.030 Verdolotti, 2014, Synergistic effect of vegetable protein and silicon addition on geopolymeric foams properties, J Mater Sci, 50, 2459, 10.1007/s10853-014-8801-3 Lassinantti Gualtieri, 2015, Preparation of phosphoric acid-based geopolymer foams using limestone as pore forming agent – thermal properties by in situ XRPD and Rietveld refinements, J Eur Ceram Soc, 35, 3167, 10.1016/j.jeurceramsoc.2015.04.030 Pia, 2014, An intermingled fractal units model to evaluate pore size distribution influence on thermal conductivity values in porous materials, Appl Therm Eng, 65, 330, 10.1016/j.applthermaleng.2014.01.037 Novais, 2014, Ceramic tiles with controlled porosity and low thermal conductivity by using pore-forming agents, Ceram Int, 40, 11637, 10.1016/j.ceramint.2014.03.163 Denissen, 2019, Kinetics of pore formation and resulting properties of lightweight inorganic polymers, J Am Ceram Soc, 10.1111/jace.16301 Henon, 2012, Porosity control of cold consolidated geomaterial foam: temperature effect, Ceram Int, 38, 77, 10.1016/j.ceramint.2011.06.040 Novais, 2016, Influence of blowing agent on the fresh- and hardened-state properties of lightweight geopolymers, Mater Des, 108, 551, 10.1016/j.matdes.2016.07.039 Font, 2017, A 100 % waste-based alkali-activated material by using olive-stone biomass ash (OBA) and blast furnace slag (BFS), Mater Lett, 203, 46, 10.1016/j.matlet.2017.05.129 Peys, 2016, Applied Clay Science Potassium-rich biomass ashes as activators in metakaolin-based inorganic polymers, Appl Clay Sci, 119, 401, 10.1016/j.clay.2015.11.003 Alonso, 2019, Olive biomass ash as an alternative activator in geopolymer formation: a study of strength, radiology and leaching behaviour, Cem Concr Compos, 104, 103384, 10.1016/j.cemconcomp.2019.103384 Hassan, 2018, Fabrication and characterization of thermally-insulating coconut ash-based geopolymer foam, Waste Manag, 80, 235, 10.1016/j.wasman.2018.09.022 Łach, 2016, Thermal insulation and thermally resistant materials made of geopolymer foams, Proc Eng, 151, 410, 10.1016/j.proeng.2016.07.350 Cui, 2018, Effect of calcium stearate based foam stabilizer on pore characteristics and thermal conductivity of geopolymer foam material, J Build Eng, 20, 21, 10.1016/j.jobe.2018.06.002 Bai, 2019, Waste-to-resource preparation of glass-containing foams from geopolymers, Ceram Int, 45, 7196, 10.1016/j.ceramint.2018.12.227 Kamseu, 2015, Cumulative pore volume, pore size distribution and phases percolation in porous inorganic polymer composites: relation microstructure and effective thermal conductivity, Energy Build, 88, 45, 10.1016/j.enbuild.2014.11.066 Farges, 2018, Insulating foams and dense geopolymers from biochar by-products, J Ceram Sci Technol, 9, 193 Ngouloure, 2015, Recycled natural wastes in metakaolin based porous geopolymers for insulating applications, J Build Eng, 3, 58, 10.1016/j.jobe.2015.06.006 Xu, 2018, Pore structure analysis and properties evaluations of fly ash-based geopolymer foams by chemical foaming method, Ceram Int, 44, 19989, 10.1016/j.ceramint.2018.07.267 De Rossi, 2018, Waste-based geopolymeric mortars with very high moisture buffering capacity, Constr Build Mater, 191, 39, 10.1016/j.conbuildmat.2018.09.201 Zaidi, 2017, Synthesis & characterization of natural soil based inorganic polymer foam for thermal insulations, Constr Build Mater, 157, 994, 10.1016/j.conbuildmat.2017.09.112 Lassinantti Gualtieri, 2016, Interactive powder mixture concept for the preparation of geopolymers with fine porosity, J Eur Ceram Soc, 36, 2641, 10.1016/j.jeurceramsoc.2016.03.030 Font, 2017, Geopolymer eco-cellular concrete (GECC) based on fluid catalytic cracking catalyst residue (FCC) with addition of recycled aluminium foil powder, J Clean Prod, 168, 1120, 10.1016/j.jclepro.2017.09.110 Ascensão, 2017, Red mud-based geopolymers with tailored alkali diffusion properties and pH buffering ability, J Clean Prod, 148, 23, 10.1016/j.jclepro.2017.01.150 Bumanis, 2017, Impact of reactive SiO2/Al2O3ratio in precursor on durability of porous alkali activated materials, Ceram Int, 43, 5471, 10.1016/j.ceramint.2017.01.060 Perná, 2014, The solidification of aluminum production waste in geopolymer matrix, J Clean Prod, 84, 657, 10.1016/j.jclepro.2014.04.043 Sahajwalla, 2018, Engineered hybrid fibre reinforced composites for sound absorption building applications, Resour Conserv Recycl, 143, 1 Ding, 2018, Porous materials for sound absorption, Compos Commun, 10, 25, 10.1016/j.coco.2018.05.001 Hung, 2014, Inorganic polymeric foam as a sound absorbing and insulating material, Constr Build Mater, 50, 328, 10.1016/j.conbuildmat.2013.09.042 Osanyintola, 2006, Effect of initial conditions, boundary conditions and thickness on the moisture buffering capacity of spruce plywood, Energy Build, 38, 1283, 10.1016/j.enbuild.2006.03.024 Wu, 2015, Proposing ultimate moisture buffering value (UMBV) for characterization of composite porous mortars, Constr Build Mater, 82, 81, 10.1016/j.conbuildmat.2015.02.058 Zhang, 2017, Moisture buffering phenomenon and its impact on building energy consumption, Appl Therm Eng, 124, 337, 10.1016/j.applthermaleng.2017.05.173 Gonçalves, 2014, The influence of porogene additives on the properties of mortars used to control the ambient moisture, Energy Build, 74, 61, 10.1016/j.enbuild.2014.01.016 Cerolini, 2009, Moisture buffering capacity of highly absorbing materials, Energy Build, 41, 164, 10.1016/j.enbuild.2008.08.006 Senff, 2018, Development of multifunctional plaster using nano-TiO2 and distinct particle size cellulose fibers, Energy Build, 158, 721, 10.1016/j.enbuild.2017.10.060 Senff, 2016, Assessment of the single and combined effect of superabsorbent particles and porogenic agents in nanotitania-containing mortars, Energy Build, 127, 980, 10.1016/j.enbuild.2016.06.048 Yoshino, 2017, Practical moisture buffering effect of three hygroscopic materials in real-world conditions, Energy Build, 139, 214, 10.1016/j.enbuild.2017.01.021 Gonçalves, 2014, Development of porogene-containing mortars for levelling the indoor ambient moisture, Ceram Int, 40, 15489, 10.1016/j.ceramint.2014.07.010 Tittarelli, 2015, Influence of binders and aggregates on VOCs adsorption and moisture buffering activity of mortars for indoor applications, Cem Concr Compos, 57, 75, 10.1016/j.cemconcomp.2014.11.013 Senff, 2015, Development of mortars containing superabsorbent polymer, Constr Build Mater, 95, 575, 10.1016/j.conbuildmat.2015.07.173 Rode, 2005 Rafatullah, 2010, Adsorption of methylene blue on low-cost adsorbents: a review, J Hazard Mater, 177, 70, 10.1016/j.jhazmat.2009.12.047 Li, 2006, Geopolymeric adsorbents from fly ash for dye removal from aqueous solution, J Colloid Interface Sci, 300, 52, 10.1016/j.jcis.2006.03.062 Wang, 2007, Solid-state conversion of fly ash to effective adsorbents for Cu removal from wastewater, J Hazard Mater, 139, 254, 10.1016/j.jhazmat.2006.06.018 Luukkonen, 2016, Simultaneous removal of Ni(II), As(III), and Sb(III) from spiked mine effluent with metakaolin and blast-furnace-slag geopolymers, J Environ Manage, 166, 579, 10.1016/j.jenvman.2015.11.007 Ji, 2019, Bibliographic and visualized analysis of geopolymer research and its application in heavy metal immobilization: a review, J Environ Manage, 231, 256, 10.1016/j.jenvman.2018.10.041 Siyal, 2018, A review on geopolymers as emerging materials for the adsorption of heavy metals and dyes, J Environ Manage, 224, 327, 10.1016/j.jenvman.2018.07.046 Al-Zboon, 2011, Fly ash-based geopolymer for Pb removal from aqueous solution, J Hazard Mater, 188, 414, 10.1016/j.jhazmat.2011.01.133 Cheng, 2012, The heavy metal adsorption characteristics on metakaolin-based geopolymer, Appl Clay Sci, 56, 90, 10.1016/j.clay.2011.11.027 Liu, 2016, A facile method for preparation of floatable and permeable fly ash-based geopolymer block, Mater Lett, 185, 370, 10.1016/j.matlet.2016.09.044 Ge, 2015, Porous geopolymeric spheres for removal of Cu(II) from aqueous solution: synthesis and evaluation, J Hazard Mater, 283, 244, 10.1016/j.jhazmat.2014.09.038 Khalid, 2018, Synthesis of geopolymer-supported zeolites via robust one-step method and their adsorption potential, J Hazard Mater, 353, 522, 10.1016/j.jhazmat.2018.04.049 Salehi, 2018, Green cylindrical mesoporous adsorbent based on alkali-activated phosphorous slag: synthesis, dye removal, and RSM modeling, Adsorption, 24, 647, 10.1007/s10450-018-9972-z Tang, 2015, Preparation and characterization of porous metakaolin-based inorganic polymer spheres as an adsorbent, Mater Des, 88, 1244, 10.1016/j.matdes.2015.09.126 Novais, 2019, Synthesis of porous biomass fly ash-based geopolymer spheres for efficient removal of methylene blue from wastewaters, J Clean Prod, 207, 350, 10.1016/j.jclepro.2018.09.265 Medpelli, 2015, Iron oxide-modified nanoporous geopolymers for arsenic removal from ground water, Resour Technol, 1, 19 Taylor, 2015, Microstructural characteristics and adsorption potential of a zeolitic tuff – metakaolin geopolymer, Desalin Water Treat, 37 Ge, 2017, Facile fabrication of green geopolymer/alginate hybrid spheres for efficient removal of Cu(II) in water: batch and column studies, Chem Eng J, 311, 126, 10.1016/j.cej.2016.11.079 Duan, 2016, Development of fly ash and iron ore tailing based porous geopolymer for removal of Cu(II) from wastewater, Ceram Int, 42, 13507, 10.1016/j.ceramint.2016.05.143 López, 2014, Cesium-adsorbent geopolymer foams based on silica from rice husk and metakaolin, Chem Lett, 43, 128, 10.1246/cl.130851 Luukkonen, 2018, Removal of ammonium from municipal wastewater with powdered and granulated metakaolin geopolymer, Environ Technol (United Kingdom), 39, 414 Bumanis, 2019, Metals removal from aqueous solutions by tailored porous waste-based granulated alkali-activated materials, Appl Clay Sci, 179, 105147, 10.1016/j.clay.2019.105147 Tang, 2018, Synthesis of highly efficient porous inorganic polymer microspheres for the adsorptive removal of Pb2+from wastewater, J Clean Prod, 193, 351, 10.1016/j.jclepro.2018.05.094 Gruskevica K, Bumanis G, Tihomirova K, Bajare D, Juhna T. Alkaline activated material as the adsorbent for uptake of high concentration of zinc from wastewater. vol. 721 KEM; 2017. https://doi.org/10.4028/www.scientific.net/KEM.721.123. López, 2014, Metakaolin-based geopolymers for targeted adsorbents to heavy metal ion separation, J Mater Sci Chem Eng, 2, 16 Panda, 2018, Thorough understanding of the kinetics and mechanism of heavy metal adsorption onto a pyrophyllite mine waste based geopolymer, J Mol Liq, 263, 428, 10.1016/j.molliq.2018.05.016 Javadian, 2015, Study of the adsorption of Cd (II) from aqueous solution using zeolite-based geopolymer, synthesized from coal fly ash; kinetic, isotherm and thermodynamic studies, Arab J Chem, 8, 837, 10.1016/j.arabjc.2013.02.018 Andrejkovičová, 2016, The effect of natural zeolite on microstructure, mechanical and heavy metals adsorption properties of metakaolin based geopolymers, Appl Clay Sci, 126, 141, 10.1016/j.clay.2016.03.009 Mužek, 2016, Removal of copper and cobalt ions by fly ash- based geopolymer from solutions-equilibrium study solutions-equilibrium study, Desalin Water Treat, 3994 Singhal, 2017, CTAB modified large surface area nanoporous geopolymer with high adsorption capacity for copper ion removal, Appl Clay Sci, 150, 106, 10.1016/j.clay.2017.09.013 Al-harahsheh, 2015, Fly ash based geopolymer for heavy metal removal: a case study on copper removal, J Environ Chem Eng, 3, 1669, 10.1016/j.jece.2015.06.005 Mužek, 2013, Fly ash-based geopolymeric adsorbent for copper ion removal from wastewater, Desalin Water Treat, 37 Kara, 2017, Metakaolin based geopolymer as an effective adsorbent for adsorption of zinc(II) and nickel(II) ions from aqueous solutions, Appl Clay Sci, 139, 54, 10.1016/j.clay.2017.01.008 Novais, 2018, Biomass fly ash geopolymer monoliths for effective methylene blue removal from wastewaters, J Clean Prod, 171, 10.1016/j.jclepro.2017.10.078 Hertel, 2019, Use of modified bauxite residue-based porous inorganic polymer monoliths as adsorbents of methylene blue, J Clean Prod, 227, 10.1016/j.jclepro.2019.04.084 Zhang, 2013, Fly ash-based geopolymer as a novel photocatalyst for degradation of dye from wastewater, Particuology, 11, 353, 10.1016/j.partic.2012.10.007 Zhang, 2017, A new graphene bottom ash geopolymeric composite for photocatalytic H2 production and degradation of dyeing wastewater, Int J Hydrogen Energy, 42, 20589, 10.1016/j.ijhydene.2017.06.156 Khan, 2015, Effective removal of methylene blue from water using phosphoric acid based geopolymers: synthesis, characterizations and adsorption studies, RSC Adv, 5, 61410, 10.1039/C5RA08255B Fallah, 2015, Novel photoactive inorganic polymer composites of inorganic polymers with copper(I) oxide nanoparticles, J Mater Sci, 50, 7374, 10.1007/s10853-015-9295-3 Falah, 2015, Synthesis and properties of novel photoactive composites of P25 titanium dioxide and copper (I) oxide with inorganic polymers, Ceram Int, 41, 13702, 10.1016/j.ceramint.2015.07.198 Falah, 2016, New composites of nanoparticle Cu (I) oxide and titania in a novel inorganic polymer (geopolymer) matrix for destruction of dyes and hazardous organic pollutants, J Hazard Mater, 318, 772, 10.1016/j.jhazmat.2016.06.016 Yan, 2018, Synthesis of novel low-cost porous gangue microsphere/geopolymer composites and their adsorption properties for dyes, Int J Appl Ceram Technol, 15, 1602, 10.1111/ijac.13045 Yousef, 2009, The influence of using Jordanian natural zeolite on the adsorption, physical, and mechanical properties of geopolymers products, J Hazard Mater, 165, 379, 10.1016/j.jhazmat.2008.10.004 EL Alouani, 2018, Removal of cationic dye – methylene blue- from aqueous solution by adsorption on fly ash-based geopolymer, J Mater Environ Sci, 9, 32 Barbosa, 2018, Preparation of mesoporous geopolymer using metakaolin and rice husk ash as synthesis precursors and its use as potential adsorbent to remove organic dye from aqueous solutions, Ceram Int, 44, 416, 10.1016/j.ceramint.2017.09.193 He, 2019, Development of an eco-efficient CaMoO4/electroconductive geopolymer composite for recycling silicomanganese slag and degradation of dye wastewater, J Clean Prod, 208, 1476, 10.1016/j.jclepro.2018.10.176 Minelli, 2016, Geopolymers as solid adsorbent for CO2 capture, Chem Eng Sci, 148, 267, 10.1016/j.ces.2016.04.013 Minelli, 2018, Characterization of novel geopolymer – zeolite composites as solid adsorbents for CO2 capture, Chem Eng J, 341, 505, 10.1016/j.cej.2018.02.050 Renforth, 2019, The negative emission potential of alkaline materials, Nat Commun, 10, 10.1038/s41467-019-09475-5 Reid, 2018, Efflorescence and subflorescence induced microstructural and mechanical evolution in fly ash-based geopolymers, Cem Concr Compos, 92, 165, 10.1016/j.cemconcomp.2018.06.010 Najafi Kani, 2012, Efflorescence control in geopolymer binders based on natural pozzolan, Cem Concr Compos, 34, 25, 10.1016/j.cemconcomp.2011.07.007 Zhang, 2018, Inhibiting efflorescence formation on fly ash–based geopolymer via silane surface modification, Cem Concr Compos, 94, 43, 10.1016/j.cemconcomp.2018.08.013 Zhang, 2014, Fly ash-based geopolymers: the relationship between composition, pore structure and efflorescence, Cem Concr Res, 64, 30, 10.1016/j.cemconres.2014.06.004 Novais, 2019, Red mud-based inorganic polymer spheres bulk-type adsorbents and pH regulators, Mater Today, 2017 Bajare D, Bumanis G, Technical R. Alkali diffusion in porous alkali activated materials. In: NTCC 2014 Int Conf Non-Traditional Cem Concr; 2014. p. 1–9. Bumanis, 2015, The effect of alkaline material particle size on adjustment ability of buffer capacity, Medziagotyra, 21, 405 Novais, 2017, Porous geopolymer spheres as novel pH buffering materials, J Clean Prod, 143, 1114, 10.1016/j.jclepro.2016.12.008 Fernández-Jiménez, 2017, Sustainable alkali activated materials: precursor and activator derived from industrial wastes, J Clean Prod, 162, 1200, 10.1016/j.jclepro.2017.06.151 Rugele, 2015, Application of industrial wastes in renewable energy production, Agron Res, 13, 526 Bortnovsky, 2010, Geopolymer based catalysts—new group of catalytic materials, Catal Today, 164, 92 Luukkonen, 2019, Application of alkali-activated materials for water and wastewater treatment: a review, Rev Environ Sci Bio/Technol, 10.1007/s11157-019-09494-0 Chen, 2017, Geopolymer-supported photocatalytic TiO2 film: preparation and characterization, Constr Build Mater, 151, 63, 10.1016/j.conbuildmat.2017.06.097 Gasca-Tirado, 2012, Incorporation of photoactive TiO2 in an aluminosilicate inorganic polymer by ion exchange, Microporous Mesoporous Mater, 153, 282, 10.1016/j.micromeso.2011.11.026 Candamano, 2015, Preparation and characterization of active Ni-supported catalyst for syngas production, Chem Eng Res Des, 96, 78, 10.1016/j.cherd.2015.02.011 Satmon, 2018, Synthesis of novel geopolymer supported nano bimetallic catalysts and its application for isopropanol dehydrogenation, Key Eng Mater, 777, 190, 10.4028/www.scientific.net/KEM.777.190 Asim, 2019, Emerging sustainable solutions for depollution: geopolymers, Constr Build Mater, 199, 540, 10.1016/j.conbuildmat.2018.12.043 Innocentini, 2019, Lattice-shaped geopolymer catalyst for biodiesel synthesis fabricated by additive manufacturing, Ceram Int, 45, 1443, 10.1016/j.ceramint.2018.09.239 Siyal, 2019, Fly ash based geopolymer for the adsorption of anionic surfactant from aqueous solution, J Clean Prod, 229, 232, 10.1016/j.jclepro.2019.04.384 Kauppila, 2018, Geopolymers as active capping materials for in situ remediation of metal(loid)-contaminated lake sediments, J Environ Chem Eng, 7, 102852