TiO2-GO nanocomposite for photocatalysis and environmental applications: A green synthesis approach 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Vacuum: Technology Applications & Ion Physics: The International Journal & Abstracting Service for Vacuum Science & Technology
年/卷/期
2018 / 156 /
页码
434-439
ISSN号
0042-207X
作者单位
Amity Univ, Amity Inst Nanotechnol, Sect 125, Noida 201307, Uttar Pradesh, India;Amity Univ, Amity Inst Biotechnol, Sect 125, Noida 201307, Uttar Pradesh, India;Amity Univ, Amity Inst Biotechnol, Sect 125, Noida 201307, Uttar Pradesh, India;Amity Univ, Amity Inst Nanotechnol, Sect 125, Noida 201307, Uttar Pradesh, India;
作者
Sharma, Mahima;Behl, Kannikka;Nigam, Subhasha;Joshi, Monika;
摘要
The present study reports a novel, simple, economic and ecofriendly method to synthesize Titanium dioxide (TiO2) nanoparticles using green alga Chlorella pyrenoidosa. Further, these TiO2 nanoparticles were deposited on GO sheets to form TiO2-GO nanocomposite. The crystalline information, morphological and optical properties of the synthesized TiO2-GO nanocomposite were studied using X-ray Diffraction (XRD), Scanning Electron Microscopy- Energy Dispersive X-ray Spectroscopy (SEM-EDX) and UV Vis absorption spectroscopy. Crystal Violet (CV) dye was used as a model contaminant. The photocatalytic activity of TiO2 nanoparticles and the TiO2-GO nanocomposite were evaluated by the degradation of CV dye in aqueous medium under visible light. The result showed that the TiO2-GO nanocomposite exhibited higher photocatalytic efficiency compared to pristine TiO2 nanoparticles with three cycles reusability. The improved activity of the TiO2-GO nanocomposite might be attributed to enhanced charge separation, efficient charge transportation, extended light absorption range and increased adsorption of dye. This nanocomposite has a great potential in removing environmental contaminants and applicable in water purification.
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关键词/主题词
Photocatalysis;TiO2-GO nanocomposite;Crystal violet;Green algae;Graphene oxide;
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