纳米复合材料
光催化
材料科学
化学工程
纳米颗粒
结晶紫
蛋白核小球藻
扫描电子显微镜
水溶液
吸附
二氧化钛
亮绿色
纳米技术
催化作用
核化学
化学
复合材料
小球藻
有机化学
藻类
病理
工程类
生物
医学
生态学
作者
Mahima Sharma,Kannikka Behl,Subhasha Nigam,Monika Joshi
出处
期刊:Vacuum
[Elsevier]
日期:2018-10-01
卷期号:156: 434-439
被引量:160
标识
DOI:10.1016/j.vacuum.2018.08.009
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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