BiVO 4 /N-rGO nano composites as highly efficient visible active photocatalyst for the degradation of dyes and antibiotics in eco system

Herein, we report the synthesis of novel nitrogen doped reduced graphene oxide/ BiVO photo catalyst by single step hydrothermal method. The physicochemical properties of the catalysts were characterized using XRD, N adsorption-desorption, Raman, XPS, SEM TEM, DRS-UV and EIS techniques. The synthesiz...

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Published inEcotoxicology and environmental safety Vol. 151; p. 118
Main Authors Appavu, Brindha, Thiripuranthagan, Sivakumar, Ranganathan, Sudhakar, Erusappan, Elangovan, Kannan, Kathiravan
Format Journal Article
LanguageEnglish
Published Netherlands 30.04.2018
Subjects
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - metabolism
Bismuth - chemistry
Catalysis
Coloring Agents - chemistry
Coloring Agents - metabolism
Ecosystem
Graphite - chemistry
Light
Nanocomposites - chemistry
Nitrogen
Oxides
Photochemical Processes
Vanadates - chemistry
Degradation
Adsorption
Antibiotics
Non-metal
Graphene
Photocatalyst
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Summary:Herein, we report the synthesis of novel nitrogen doped reduced graphene oxide/ BiVO photo catalyst by single step hydrothermal method. The physicochemical properties of the catalysts were characterized using XRD, N adsorption-desorption, Raman, XPS, SEM TEM, DRS-UV and EIS techniques. The synthesized catalysts were tested for their catalytic activity in the photo degradation of some harmful textile dyes (methylene blue & congo red) and antibiotics (metronidazole and chloramphenicol) under visible light irradiation. Reduced charge recombination and enhanced photocatalytic activity were observed due to the concerted effect between BiVO and nitrogen-rGO. The degradation efficiency of BiVO /N-rGO in the degradation of CR and MB was remarkably high i.e 95% and 98% under visible light irradiation. Similarly 95% of MTZ and 93% of CAP were degraded under visible light irradiation. HPLC studies implied that both the dyes and antibiotics were degraded to the maximum extent. The plausible photocatalytic mechanism on the basis of experimental results was suggested.
ISSN:1090-2414