Photocatalytic activity of cobalt-doped zinc oxide thin film prepared using the spray coating technique

被引：20
|
作者：
Sutanto, Heri [1 ]
Wibowo, Singgih [1 ]
Hadiyanto [2 ]
Arifin, Mohammad [1 ]
Hidayanto, Eko [1 ]
机构：
[1] Diponegoro Univ, Smart Mat Res Ctr SMARC, Dept Phys, Fac Sci & Math, Jln Prof Soedharto, Tembalang, Semarang, Indonesia
[2] Diponegoro Univ, Fac Engn, Dept Chem Engn, Jln Prof Soedharto, Tembalang, Semarang, Indonesia
来源：
MATERIALS RESEARCH EXPRESS | 2017年 / 4卷 / 07期
关键词：
ZnO:Co thin films; crystallite size; transmittance; spray coating; photocatalyst; OPTICAL-PROPERTIES; ZNO; CO;
D O I：
10.1088/2053-1591/aa7310
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on the synthesis, characterization and photocatalytic activity of ZnO: Co thin films coated onto amorphous glass substrates by sol-gel spray coating technique. Structural and optical properties of the films were evaluated using x-ray diffractometer (XRD) and uv-vis spectrophotometer (UV-Vis), respectively. XRD patterns showed that the samples exhibited hexagonal wurtzite structure. The addition of cobalt reduced the (0 0 2) peak. This doping also reduces transparency and optical band gap. The band gap (E-g) markedly decreased from 3.20 eV to 3.00 eV for undoped ZnO and ZnO: Co with 10 mol% of doping concentration, respectively. Our thin films exhibited good structural, optical and photo cataytic properties. In this study, ZnO with 4 mol% of Co was observed to have the highest photocatalytic activity with methylene blue (MB) degradation of about 76.31% for 2 h under UV irradiation.
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页数：6
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