scholarly journals Synthesis and Characterization of Graphene Oxide-Modified Bi2WO6and Its Use as Photocatalyst

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Xiaoyue Hu ◽  
Xiangchao Meng ◽  
Zisheng Zhang
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Hydrothermal Process ◽  
Charge Carriers ◽  
Synthesis And Characterization ◽  
High Adsorption ◽  
Dye Pollutants ◽  
Photocatalytic Activities ◽  
Template Free

A Bi2WO6photocatalyst modified with graphene was synthesized in a two-step template-free hydrothermal process. The prepared samples were characterized to explore their properties. The photocatalytic activities of the prepared samples were investigated by degrading dye model, Rhodamine B (RhB), under visible light irradiation. This showed that the modified Bi2WO6photocatalyst with 1.2 wt% of graphene greatly improved photocatalytic activity during the degradation of dye pollutants, compared to pure Bi2WO6. The enhancement can be interpreted as the integrated effects of ultrahigh charge carriers’ mobility and high adsorption of RhB on graphene. Additionally, effects including catalysts dosage amount, pH of RhB solution, and temperature of reactor on the photocatalytically degrading RhB were also studied and discussed.

Photocatalytic Activities of Cobalt-Doped ZnO Nanoparticles by Hydrothermal Method

2021 ◽  
Vol 32 ◽  
pp. 33-43
Author(s):  
S. Sathiya ◽  
J. Vijayapriya ◽  
K. Parasuraman ◽  
Durairaj Benny Anburaj ◽  
S. Joshua Gnanamuthu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Process ◽  
Charge Carriers ◽  
Electronic Interaction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Photocatalytic Activities ◽  
Doped Zno ◽  
Sun Light

Photocatalytically active cobalt-doped ZnO (Co: ZnO) hexagonal nanoparticles have been prepared by hydrothermal process. X-ray diffraction, SEM, FTIR and UV–vis spectroscopy confirmed that the dopant ions substitute for some of the lattice zinc ions, and furthermore, that Co2+ ion exists. The as-prepared Co: ZnO samples have an extended light absorption range compared with pure ZnO and showed highly efficient photocatalytic activity, only requiring 120 min to decompose ~90% of MB dye under sun light irradiation. The results indicated that a strong electronic interaction between the Co and ZnO was present, and that the incorporation of Co promoted the charge separation and enhanced the charge transfer ability and, at the same time, effectively inhibited the recombination of photogenerated charge carriers in ZnO, resulting in high visible light photocatalytic activity.

Synthesis and characterization of a CuS–WO3 composite photocatalyst for enhanced visible light photocatalytic activity

RSC Advances ◽  
2015 ◽  
Vol 5 (65) ◽  
pp. 52718-52725 ◽  
Author(s):  
J. Theerthagiri ◽  
R. A. Senthil ◽  
A. Malathi ◽  
A. Selvi ◽  
J. Madhavan ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrothermal Process ◽  
Synthesis And Characterization ◽  
Composite Photocatalyst ◽  
Visible Light Photocatalytic Activity ◽  
Visible Light Photocatalytic

WO3 nanorods and flower-like CuS were synthesized by a hydrothermal process.

Synthesis and characterization of reduced graphene oxide by cobalt oxide composite electrode

2020 ◽  
Author(s):  
S. Veeresh ◽  
H. Ganesh ◽  
Y. S. Nagaraj ◽  
M. Vandana ◽  
S. P. Ashokkumar ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Cobalt Oxide ◽  
Composite Electrode ◽  
Synthesis And Characterization ◽  
Oxide Composite ◽  
Reduced Graphene
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