Vietnam Journal of Catalysis and Adsorption
0866-7411
Cơ quản chủ quản: N/A
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Các bài báo tiêu biểu
Effect of hexamethylene tetramine (HMTA) surfactant on the structural characteristics and photocatalytic activity of Cu-ZnO nanoparticle materials fabricated by the hydrothermal method
Tập 10 Số 3 - Trang 34-39 - 2021
The experiment had fabricated and studied the properties of ZnO and Cu doped ZnO nanoparticles with the change of the hexamethylene tetramine surfactant content (HMTA) with molar ratio Zn2 +: HMTA = 1: x; x = 1, 2 and 4. The methods were used to study the characteristics of materials such as: XRD, raman shift, SEM, reflection spectrum. The results show that, when the content of surfactant HMTA inc...... hiện toàn bộ
#ZnO nanomaterials #Cu doped ZnO #photocatalysts #HMTA #ultraviolet irradiation
Synthesis of Cu2O and Cu2O-C3N4 nanomaterials for the photodegradation of organic dyes under visible light irradiation
Tập 10 Số 3 - Trang 65-70 - 2021
These experiment fabricated C3N4 powdermaterials by the calcinational method and fabricated Cu2O, Cu2O-3%C3N4, Cu2O-5%C3N4 nanomaterials by the hydrothermal method. The powdermaterials characteristics were studied by methods such as: X-ray diffraction (XRD); raman shift; scanning electron microscope (SEM); UV-vis solid absorption spectra. The photocatalytic activity of samples was studied by decom...... hiện toàn bộ
#Cu2O #C3N4 #octahedral Cu2O-C3N4 crystals #photocatalysts #visible light irradiation
Effect of hexamethylene tetramine (HMTA) surfactant on the structural characteristics and photocatalytic activity of Cu-ZnO nanoparticle materials fabricated by the hydrothermal method
- 2021
The experiment had fabricated and studied the properties of ZnO and Cu doped ZnO nanoparticles with the change of the hexamethylene tetramine surfactant content (HMTA) with molar ratio Zn 2 + : HMTA = 1: x; x = 1, 2 and 4. The methods were used to study the characteristics of materials such as: XRD, raman shift, SEM, reflection spectrum. The results show that, when the content of surfactant HMTA i...... hiện toàn bộ
#ZnO nanomaterials #Cu doped ZnO #photocatalysts #HMTA #ultraviolet irradiation
Study on the synthesis of heterostructure MoS2/TiO2 material for photocatalytic degradation of 2,4-dichlorophenoxyacetic acid
Tập 10 Số 3 - Trang 113-120 - 2021
Nanoflower MoS2, nanowire TiO2(NNW) and 3D MoS2/TiO2 nano-heterostructure have been synthesized successfully by simple typical hydrothermal reaction method followed by 200oC calcination under an argon atmosphere. The prepared samples are characterized in detail by XRD, FESEM, UV-vis DRS, EDX and BET. The results suggest that the TiO2 NNW is successfully coupled with MoS2 to form the heterojunction...... hiện toàn bộ
#2 #4-D #heterostructure #nanoflower MoS2 #nanowire TiO2
In-vitro antifungal activities of silver-copper complex/chitosan (Ag-Cu@CS) nanoparticles synthesized by in-situ encapsulation
Tập 10 Số 1S - Trang 24-30 - 2021
In this study, silver-copper complex/chitosan (Ag-Cu@CS) nanoparticles were successfully synthesized by in-situ encapsulation reduction method. The results show that as-synthesized nanoparticles were quasi spherical in shape with the average diameter of 7.97 nm, well-dispersed particles in water and stable. The test phytopathogenic fungi Sclerotium rolfsii, Magnaporthe oryzae K, Botrytis cinerea, ...... hiện toàn bộ
#silver-copper complex/chitosan #in-situ encapsulation #plant protection
Synthesis of Mo-Modified TiO2 Material with Enhanced Photocatalytic activity
Tập 10 Số 1S - Trang 56-62 - 2021
The Mo-modified TiO2 was synthesized via facile impregnation combined with pyrolysis of mixtures in several different initial mass ratios of precursors as mTi(OH)4/m(NH4)6Mo7O24.4H2O equaling 5, 10 and 15 in 500 oC for an hour. The as-prepared samples, denoted as n-MT-500 within n for the initial mass ratio of precursors, were characterized by X-ray diffraction, scanning electron microscopy, ultra...... hiện toàn bộ
#TiO2 #MoO3 #photocatalyst #Ilmenite #modified-TiO2
Practical Copper-catalyzed Synthesis of Pyrroles under Solvent Free Condition
Tập 11 Số 3 - Trang 54-58 - 2022
An efficient and practical method for the synthesis of pyrroles by Cu-catalyzed multicomponent reaction has been described. A range of highly functionalized pyrroles was prepared in good yields under solvent free condition.
#Cu catalysis #Pyrrole synthesis #N-heterocyclic carbene #Multicomponent reaction #Sustainable process
Effect of iron doping concentration on the structure and photocatalytic activity of ZnO nanosheets under visible light irradiation
Tập 11 Số 2 - Trang 8-15 - 2022
Undoped and Fe-doped ZnO nanosheets have been successfully synthesized by hydrothermal method using zinc acetate as the source of Zn2+, iron(III) nitrate as the doping source, urea as media to control the solution pH and polyethylene glycol as structure-directing agents. The obtained materials were characterized by means of XRD, TEM, BET, FT-IR and UV-Vis-DRS. The results show that ZnO has a...... hiện toàn bộ
#Fe-doped ZnO #nanosheets #hydrothermal synthesis #methylene blue #photodegradation
Nickel nanoparticles supported on titanium oxides nanotubes as an efficient catalyst for hydrodechlorination of 3-chlorophenol
Tập 10 Số 4 - Trang 120-124 - 2021
Titanium oxides nanotubes (TNTs) were prepared by hydrothermal method and used as nano-support for nickel nanoparticles. Indeed, nickel nanoparticles supported TNTs (Ni-TNTs) were in situ synthesized from nickel salt and TNTs by chemical reduction method using sodium borohydride (NaBH4) as reducing agent. The physio-chemical properties of Ni-TNTs nano-catalysts were fully characterized such as Tra...... hiện toàn bộ
#Hydrodechlorination #nanocatalyst #nickel nanoparticles #titanium oxides nanotubes
Study on the synthesis of g-C3N4/CoFe2O4/Reduced graphene oxide material and its application as photocatalyst
Tập 11 Số 2 - Trang 89-97 - 2022
In this study, the g-C3N4/CoFe2O4/Reduced graphene oxide composites were successfully synthesized by the co-precipitation method combined with mixed phase mixture. The obtained results from characterization methods such as XRD, SEM, FT-IR, EDX,… showed that the composite has a high structure and crystallinity, and spinel ferrite particles were dispersed fairly evenly onto reduced graphene oxide sh...... hiện toàn bộ
#Ferrite #graphen oxit dạng khử #g-C3N4/CoFe2O4/Graphen