Facile Preparation of CNT/Ag2S Nanocomposites with Improved Visible and NIR Light Photocatalytic Degradation Activity and Their Catalytic Mechanism

Micromachines - Tập 10 Số 8 - Trang 503
Lijing Di1, Tao Xian1, Xiaofeng Sun1, Hongqin Li1, Yongjie Zhou1, Jun Ma1, Hua Yang2
1College of Physics and Electronic Information Engineering, Qinghai Normal University, Xining 810008, China
2State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China

Tóm tắt

In this work, a series of carbon nanotubes (CNT)/Ag2S hybrid nanocomposites were successfully prepared by a facile precipitation method. Transmission electron microscope (TEM) observation indicates that Ag2S nanoparticles with an average particle size of ~25 nm are uniformly anchored on the surface of CNT. The photocatalytic activities of the CNT/Ag2S nanocomposites were investigated toward the degradation of rhodamine B (RhB) under visible and near-infrared (NIR) light irradiation. It is shown that the nanocomposites exhibit obviously enhanced visible and NIR light photocatalytic activities compared with bare Ag2S nanoparticles. Moreover, the recycling photocatalytic experiment demonstrates that the CNT/Ag2S nanocomposites possess excellent photocatalytic stability. The photoelectrochemical and photoluminescence measurements reveal the efficient separation of photogenerated charges in the CNT/Ag2S nanocomposites. This is the dominant reason behind the improvement of the photocatalytic activity. Based on active species trapping experiments, the possible photocatalytic mechanism of CNT/Ag2S nanocomposites for dye degradation under visible and NIR light irradiation was proposed.

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Tài liệu tham khảo

Fox, 1993, Heterogeneous Photocatalysis, Chem. Rev., 93, 341, 10.1021/cr00017a016

Kudo, 2009, Heterogeneous photocatalyst materials for water splitting, Chem. Soc. Rev., 38, 253, 10.1039/B800489G

Yan, 2018, A hydrothermal route to the synthesis of CaTiO3 nanocuboids using P25 as the titanium source, J. Electron. Mater., 47, 3045, 10.1007/s11664-018-6183-z

Tian, 2015, Carbon quantum dots/hydrogenated TiO2 nanobelt heterostructures and their broad spectrum photocatalytic properties under UV, visible, and near-infrared irradiation, Nano Energy, 11, 419, 10.1016/j.nanoen.2014.10.025

Di, 2018, Facile synthesis and enhanced visible-light photocatalytic activity of novel p-Ag3PO4/n-BiFeO3 heterojunction composites for dye degradation, Nanoscale Res. Lett., 13, 257, 10.1186/s11671-018-2671-6

Ye, 2018, A promising Ag2CrO4/LaFeO3 heterojunction photocatalyst applied to photo-Fenton degradation of RhB, Environ. Technol., 19, 1

Jiang, 2015, Silver Oxide as Superb and Stable Photocatalyst under Visible and Near-Infrared Light Irradiation and Its Photocatalytic Mechanism, Ind. Eng. Chem. Res., 54, 832, 10.1021/ie503241k

Wei, 2016, Ag2O nanoparticle/TiO2 nanobelt heterostructures with remarkable photo-response and photocatalytic properties under UV, visible and near-infrared irradiation, Appl. Catal. B Environ., 198, 83, 10.1016/j.apcatb.2016.05.040

Shen, 2013, Efficient electron injection in non-toxic silver sulfide (Ag2S) sensitized solar cells, J. Power Sources, 240, 8, 10.1016/j.jpowsour.2013.03.168

Wu, 2012, Visible to near-infrared light harvesting in Ag2S nanoparticles/ZnO nanowire array photoanodes, Nanoscale, 4, 1368, 10.1039/c2nr11705c

Cao, 2014, Facile and rapid growth of Ag2S microrod arrays as efficient substrates for both SERS detection and photocatalytic degradation of organic dyes, Chem. Commun., 50, 4931, 10.1039/c4cc00107a

Huo, 2018, Fabricated Ag/Ag2S/reduced grapheme oxide composite photocatalysts for enhancing visible light photocatalytic and antibacterial activity, J. Ind. Eng. Chem., 57, 125, 10.1016/j.jiec.2017.08.015

Pourahmad, 2012, Ag2S nanoparticle encapsulated in mesoporous material nanoparticles and its application for photocatalytic degradation of dye in aqueous solution, Superlattices Microstruct., 52, 276, 10.1016/j.spmi.2012.05.009

Jiang, 2015, Photocatalytic performance of Ag2S under irradiation with visible and near-infrared light and its mechanism of degradation, RSC Adv., 5, 24064, 10.1039/C4RA15774E

Sadovnikova, 2017, Photocatalytic hydrogen evolution from aqueous solutions on nanostructured Ag2S and Ag2S/Ag, Catal. Commun., 100, 178, 10.1016/j.catcom.2017.07.004

Di, L.J., Yang, H., Xian, T., Liu, X.Q., and Chen, X.J. (2019). Photocatalytic and Photo-Fenton Catalytic Degradation Activities of Z-Scheme Ag2S/BiFeO3 Heterojunction Composites under Visible-Light Irradiation. Nanomaterials, 9.

Zhao, 2018, A novel 3D plasmonic p-n heterojunction photocatalyst: Ag nanoparticles on flower-like p-Ag2S/n-BiVO4 and its excellent photocatalytic reduction and oxidation activities, Appl. Catal. B Environ., 229, 171, 10.1016/j.apcatb.2018.02.008

Khanchandani, 2014, Band Gap Engineering of ZnO using Core/Shell Morphology with Environmentally Benign Ag2S Sensitizer for Efficient Light Harvesting and Enhanced Visible-Light Photocatalysis, Inorg. Chem., 53, 8902, 10.1021/ic500518a

Zhao, 2019, Synthesis of heterojunction photocatalysts composed of Ag2S quantum dots combined with Bi4Ti3O12 nanosheets for the degradation of dyes, Environ. Sci. Pollut. Res., 26, 5524, 10.1007/s11356-018-4050-3

Liu, 2018, In-situ ion-exchange synthesis Ag2S modified SnS2 nanosheets toward highly photocurrent response and photocatalytic activity, J. Colloid Interface Sci., 512, 784, 10.1016/j.jcis.2017.10.112

Qiu, 2016, Interfacial effect of the nanostructured Ag2S/Co3O4 and its catalytic mechanism for the dye photodegradation under visible light, Appl. Surf. Sci., 362, 498, 10.1016/j.apsusc.2015.11.161

Xue, 2018, Microwave-assisted one-step rapid synthesis of ternary Ag/Ag2S/g-C3N4 heterojunction photocatalysts for improved visible-light induced photodegradation of organic pollutant, J. Photochem. Photobiol. A, 353, 557, 10.1016/j.jphotochem.2017.12.021

Zhang, 2013, Cation exchange synthesis of ZnS-Ag2S microspheric composites with enhanced photocatalytic activity, Appl. Surf. Sci., 270, 133, 10.1016/j.apsusc.2012.12.140

Gao, 2019, Photocatalytic activity tuning in a novel Ag2S/CQDs/CuBi2O4 composite: Synthesis and photocatalytic mechanism, Mater. Res. Bull., 115, 140, 10.1016/j.materresbull.2019.03.021

Tian, 2017, Anion-exchange synthesis of Ag2S/Ag3PO4 core/shell composites with enhanced visible and NIR light photocatalytic performance and the photocatalytic mechanisms, Appl. Catal. B Environ., 209, 566, 10.1016/j.apcatb.2017.03.022

Yu, 2016, A visible-light-driven core-shell like Ag2S@Ag2CO3 composite photocatalyst with high performance in pollutants degradation, Chemosphere, 157, 250, 10.1016/j.chemosphere.2016.05.021

Hu, 2017, Highly efficient full solar spectrum (UV-vis-NIR) photocatalytic performance of Ag2S quantum dot/TiO2 nanobelt heterostructures, J. Ind. Eng. Chem., 45, 189, 10.1016/j.jiec.2016.09.022

Aazam, 2014, Photocatalytic oxidation of methylene blue dye under visible light by Ni doped Ag2S nanoparticles, J. Ind. Eng. Chem., 20, 4033, 10.1016/j.jiec.2013.12.106

Tian, 2015, Heterostructure of AuAg nanoparticles tipping on Ag2S quantum tubes, Chem. Commun., 51, 11818, 10.1039/C5CC01525A

Sadovnikov, 2017, Enhanced photocatalytic hydrogen evolution from aqueous solutions on Ag2S/Ag heteronanostructure, Int. J. Hydrog. Energy, 42, 25258, 10.1016/j.ijhydene.2017.08.145

Meng, 2012, Synthesis of fullerene modified with Ag2S with high photocatalytic activity under visible light, J. Mater. Chem., 22, 16127, 10.1039/c2jm32344c

Hu, 2016, Preparation and photocatalytic activity of graphene-modified Ag2S composite, J. Exp. Nanosci., 11, 433, 10.1080/17458080.2015.1077533

Meng, 2014, Facile Preparation of Ag2S-CNT Nanocomposites with Enhanced Photo-catalytic Activity, J. Korean Chem. Soc., 51, 1

Cen, C.L., Zhang, Y.B., Liang, C.P., Chen, X.F., Yi, Z., Duan, T., Tang, Y.J., Ye, X., Yi, Y.G., and Xiao, S.Y. (2019). Numerical investigation of a tunable dual-band metamaterial perfect absorber consisting of two-intersecting graphene nanorings arrays. Phys. Lett. A.

Zhang, 2019, Dual-band switchable terahertz metamaterial absorber based on metal nanostructure, Results Phys., 14, 102422, 10.1016/j.rinp.2019.102422

Yi, 2019, Nanoribbon-ring cross perfect metamaterial graphene multi-band absorber in THz range and the sensing application, Results Phys., 14, 102367, 10.1016/j.rinp.2019.102367

Tawfick, 2013, Carbon Nanotubes: Present and Future Commercial Applications, Science, 339, 535, 10.1126/science.1222453

Yi, Z., Liang, C.P., Chen, X.F., Zhou, Z.G., Tang, Y.J., Ye, X., Yi, Y.G., Wang, J.Q., and Wu, P.H. (2019). Dual-band plasmonic perfect absorber based on graphene metamaterials for refractive index sensing application. Micromachines, 10.

Wang, 2019, A theoretical study of a plasmonic sensor comprising a gold nano-disk array on gold film with an SiO2 spacer, Chin. Phys. B, 28, 044201, 10.1088/1674-1056/28/4/044201

Wang, 2019, Wide range refractive index sensor based on a coupled structure of Au nanocubes and Au film, Opt. Mater. Express, 9, 3079, 10.1364/OME.9.003079

Tong, 2019, Theoretical study for fabricating elliptical subwavelength nanohole arrays by higher-order waveguide-mode interference, Results Phys., 14, 102460, 10.1016/j.rinp.2019.102460

Li, 2012, Carbon nanodots: Synthesis, properties and applications, J. Mater. Chem., 22, 24230, 10.1039/c2jm34690g

Wang, 2019, Surface-enhanced Raman scattering by composite structure of gold nanocube-PMMA-gold film, Opt. Mater. Express, 9, 1872, 10.1364/OME.9.001872

Czech, 2015, MWCNT-TiO2-SiO2 nanocomposites possessing the photocatalytic activity in UVA and UVC, Appl. Catal. B: Environ., 162, 564, 10.1016/j.apcatb.2014.07.035

Tahir, 2018, Role of MoSe2 on nanostructures WO3-CNT performance for photocatalytic hydrogen evolution, Ceram. Int., 44, 6686, 10.1016/j.ceramint.2018.01.081

Mahdiani, 2018, Grafting of CuFe12O19 nanoparticles on CNT and graphene: Eco-friendly synthesis, characterization and photocatalytic activity, J. Clean. Prod., 176, 1185, 10.1016/j.jclepro.2017.11.177

Zhao, 2019, Synergistically enhanced photocatalytic performance of Bi4Ti3O12 nanosheets by Au and Ag nanoparticles, J. Mater. Sci. Mater. Electron., 30, 13785, 10.1007/s10854-019-01762-7

Jiang, 2018, Enhanced photocatalytic activity of graphitic carbon nitride/carbon nanotube/Bi2WO6 ternary Z-scheme heterojunction with carbon nanotube as efficient electron mediator, J. Colloid Interface Sci., 512, 693, 10.1016/j.jcis.2017.10.074

Shaban, 2018, TiO2 Nanoribbons/Carbon Nanotubes Composite with Enhanced Photocatalytic Activity; Fabrication, Characterization, and Application, Sci. Rep., 8, 781, 10.1038/s41598-018-19172-w

Di, L.J., Yang, H., Xian, T., and Chen, X.J. (2018). Construction of Z-scheme g-C3N4/CNT/Bi2Fe4O9 composites with improved simulated-sunlight photocatalytic activity for the dye degradation. Micromachines, 9.

Xia, 2017, Facile synthesis of CNTs/CaIn2S4 composites with enhanced visible-light photocatalytic performance, Appl. Surf. Sci., 391, 565, 10.1016/j.apsusc.2016.06.062

Zheng, 2018, Assembly of Ag3PO4 nanoparticles on rose flower-like Bi2WO6 hierarchical architectures for achieving high photocatalytic performance, J. Mater. Sci. Mater. Electron., 29, 9291, 10.1007/s10854-018-8959-6

Wang, 2019, Theoretical study of subwavelength circular grating fabrication based on continuously exposed surface plasmon interference lithography, Results Phys., 14, 102446, 10.1016/j.rinp.2019.102446

Cen, 2019, Theoretical design of a triple-band perfect metamaterial absorber in the THz frequency range, Results Phys., 14, 102463, 10.1016/j.rinp.2019.102463

Pooladi, 2019, Investigation of the structural, magnetic and dielectric properties of Mn-doped Bi2Fe4O9 produced by reverse chemical co-precipitation, Mater. Chem. Phys., 229, 39, 10.1016/j.matchemphys.2019.02.076

Zheng, 2017, A novel Bi4Ti3O12/Ag3PO4 heterojunction photocatalyst with enhanced photocatalytic performance, Nanoscale Res. Lett., 12, 608, 10.1186/s11671-017-2377-1

Abdullah, 2015, Facile Synthesis of n-type (AgIn)xZn2(1−x)S2/p-type Ag2S Nanocomposite for Visible Light Photocatalytic Reduction To Detoxify Hexavalent Chromium, ACS Appl. Mater. Interfaces, 7, 26941, 10.1021/acsami.5b09647

Xiao, 2016, CNTs Threaded (001) Exposed TiO2 with High Activity in Photocatalytic NO Oxidation, Nanoscale, 8, 2899, 10.1039/C5NR07589K

Zhao, 2019, Surface-disorder-engineering-induced enhancement in the photocatalytic activity of Bi4Ti3O12 nanosheets, Desalin. Water Treat., 145, 326, 10.5004/dwt.2019.23710

Meng, 2017, Plasmonic Z-scheme Ag2O-Bi2MoO6 p-n heterojunction photocatalysts with greatly enhanced visible-light responsive activities, Mater. Lett., 189, 267, 10.1016/j.matlet.2016.11.114

Yan, 2019, Constructing a new Z-scheme multi-heterojunction photocataslyts Ag-AgI/BiOI-Bi2O3 with enhanced photocatalytic activity, J. Hazard. Mater., 371, 304, 10.1016/j.jhazmat.2019.03.031

Wang, 2019, Surface disorder engineering of flake-like Bi2WO6 crystals for enhanced photocatalytic activity, J. Electron. Mater., 48, 2067, 10.1007/s11664-019-07045-5

Meng, 2015, Facile synthesis of BiOBr/Bi2WO6 heterojunction semiconductors with High visible-light-driven photocatalytic activity, J. Photochem. Photobiol. A Chem., 310, 33, 10.1016/j.jphotochem.2015.04.024

Ma, 2017, Enhanced debromination and degradation of 2,4-dibromophenol by an Z-scheme Bi2MoO6/CNTs/g-C3N4 visible light photocatalyst, Chem. Eng. J., 316, 461, 10.1016/j.cej.2017.01.124

Ning, 2018, Preparation and photocathodic protection property of Ag2S-TiO2 composites, J. Environ. Chem. Eng., 6, 311

Yan, Y.X., Yang, H., Yi, Z., Li, R.S., and Wang, X.X. (2019). Enhanced photocatalytic performance and mechanism of Au@CaTiO3 composites with Au nanoparticles assembled on CaTiO3 nanocuboids. Micromachines, 10.

Teoh, 2012, Progress in Heterogeneous Photocatalysis: From Classical Radical Chemistry to Engineering Nanomaterials and Solar Reactors, J. Phys. Chem. Lett., 3, 629, 10.1021/jz3000646

Tachikawa, 2007, Mechanistic Insight into the TiO2 Photocatalytic Reactions: Design of New Photocatalysts, J. Phys. Chem. C, 111, 5259, 10.1021/jp069005u