Copper and Graphene activated ZnO nanopowders for enhanced photocatalytic and antibacterial activities

被引：83
作者：
Ravichandran, K. [1 ]
Chidhambaram, N. [1 ,2 ]
Gobalakrishnan, S. [3 ]
机构：
[1] AVVM Sri Pushpam Coll Autonomous, Post Grad & Res Dept Phys, Thanjavur 613503, Tamil Nadu, India
[2] Rajah Serfoji Govt Coll Autonomous, Post Grad & Res Dept Phys, Thanjavur 613503, Tamil Nadu, India
[3] Noorul Islam Univ, Dept Nanotechnol, Noorul Islam Ctr Higher Educ, Kumaracoil 629180, Tamil Nadu, India
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2016年 / 93卷
关键词：
Oxides; Wet Chemical; X-ray diffraction; luminescence; defects; AG/ZNO NANOCOMPOSITES; THIN-FILMS; DEGRADATION; COMPOSITE; OXIDE; NANOPARTICLES; CU; EFFICIENCY; PLATFORM;
D O I：
10.1016/j.jpcs.2016.02.013
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
ZnO, ZnO:Cu and ZnO:Cu:Graphene nanopowders were synthesized via a facile wet chemical method. The XRD studies show that the synthesized samples have hexagonal wurtzite structure. It is found that graphene addition induces a decrease in crystallite size. UV-vis absorption spectra of the samples show sharp absorption edges around 380 nm. Photoluminescence studies reveal that the incorporation of copper and graphene in ZnO facilitates the efficient photo generated electron-hole pair separation. It is found that the ZnO:Cu and ZnO:Cu:Graphene nanopowder exhibit improved photocatalytic efficiency for the photodegradation of Methylene Blue (MB) under visible light irradiation. Moreover, improved antibacterial activity of ZnO:Cu:Graphene nanopowder against Escherichia coli and Staphylococcus aureus bacteria is observed. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：82 / 90
页数：9
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