Fabrication of fluorine doped graphene and SmVO_4 based dispersed and adsorptive photocatalyst for abatement of phenolic compounds from water and bacterial disinfection 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Journal of cleaner production
年/卷/期
2018 / 203 / Dec.1 Pt.1/1216
页码
386-399
ISSN号
0959-6526
作者单位
Shoolini Univ, Fac Basic Sci, Sch Chem, Solan 173229, HP, India;Shoolini Univ, Fac Appl Sci & Biotechnol, Solan 173229, HP, India;Indian Inst Technol, Sch Comp & Elect Engn, Mandi 175005, HP, India;Shoolini Univ, Fac Basic Sci, Sch Chem, Solan 173229, HP, India;Sabzevar Univ Med Sci, Fac Hlth, Dept Environm Hlth Engn, Sabzevar, Iran;Shoolini Univ, Fac Appl Sci & Biotechnol, Solan 173229, HP, India;Shoolini Univ, Fac Basic Sci, Sch Chem, Solan 173229, HP, India;
作者
Shandilya, Pooja;Mittal, Divya;Soni, Mahesh;Raizada, Pankaj;Hosseini-Bandegharaei, Ahmad;Saini, Adesh K.;Singh, Pardeep;
摘要
During heterogeneous photocatalysis, high dispersion of photocatalyst is vital for efficiency of slurry type photoreactors. In this work, we have prepared fluorine doped graphene (FG24) as a highly dispersible adsorbent by sonochemical exfoliation method. Moreover, SmVO4 (SV) nanoparticles were immobilized onto the surface of FG24 to prepare SV/FG24 photocatalyst, using post synthesis method. The zeta potential and Tyndall effect experiments confirmed the formation of highly dispersed SV/FG24 photo catalyst. The thickness of both FG24 and SV/FG24 was less than 2.0 nm. The band gap of SV/FG24 was 2.28 eV. The high surface area of SV/FG24 was suitable for adsorptive removal of phenol and 2, 4-dinitrophenol (DNP). The simultaneous process of adsorption and photocatalysis was the most effective for the degradation of selected phenolic compounds. Both phenol and DNP were mineralized in 10 h under visible light. The intermediates formation during the degradation process was proved by highperformance liquid chromatography and mass spectrometry analysis. The photocatalytic activity of SV/FG24 was also tested for photocatalytic bacterial disinfection of Escherichia toll, Bacillus subtilis, Pseudomonas fluorescence, Staphylococcus aureus, and Streptococcus enterica bacteria. The selected bacteria were deactivated using SV/FG24 in 3 h under visible light. Both OH center dot and O-2(center dot) radicals played an important role during both degradation and disinfection process. Due to significant recyclability, SV/FG24 could be used as cost-effective photocatalyst for wastewater treatment. Unlike conventional slurry photo-reactors, no magnetic stirring was used during photocatalytic degradation reactions. We have successfully fabricated high-dispersed photocatalyst which remained dispersed for 10 h and effectively used for photocatalytic water purification process. (C) 2018 Elsevier Ltd. All rights reserved.
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关键词/主题词
Fluorine doped graphene nanosheets;SmVO4;Well-dispersed photocatalyst;Photocatalytic water treatment;Antibacterial activity;
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