Photocatalytic efficacy of ZnO films - light intensity and thickness effects

被引：27
|
作者：
Ravichandran, K. [1 ]
Sindhuja, E. [1 ]
Uma, R. [1 ,2 ]
Arun, T. [3 ]
机构：
[1] AVVM Sri Pushpam Coll Autonomous, PG & Res Dept Phys, Thanjavur, Tamil Nadu, India
[2] Sengamala Thayaar Educ Trust Womens Coll, Dept Phys, Mannargudi, Tamil Nadu, India
[3] Inst Phys, Bhubaneswar, Odisa, India
来源：
SURFACE ENGINEERING | 2017年 / 33卷 / 07期
关键词：
ZnO thin films; photocatalysis; film thickness; Ag doping; VISIBLE-LIGHT; ANTIBACTERIAL ACTIVITY; THIN-FILMS; NANOPARTICLES; OXIDE; NANOSTRUCTURES; AG; DEGRADATION; PERFORMANCE; NANOPOWDERS;
D O I：
10.1080/02670844.2016.1270797
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The aim of this work is to investigate the effects of film thickness, light intensity and Ag incorporation on the photoctalytic efficacy of zinc oxide films. ZnO films with different thicknesses were prepared using an automated home-made jet nebuliser spray technique. The results show that the thickness of the film has no appreciable influence on the photocatalytic efficiency of ZnO films whereas the light intensity strongly influences the photocatalytic activity of ZnO films. It is also found that doping of Ag with ZnO causes considerable enhancement in the photocatalytic activity. The dye degradation rate constant in the case of undoped ZnO film with thickness 400 nm is 0.0263min(-1), whereas for Ag doped ZnO film having the same thickness, it is 0.0530 min(-1). The reason for this enhancement in the photocatalytic efficacy of ZnO: Ag film is addressed with the help of optical band gap and the reported characteristics of Ag.
引用
收藏
页码：512 / 520
页数：9
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