Electrochemical Materials Laboratory, Department of Physics, Shivaji University, Kolhapur 410 006, India.
J Photochem Photobiol B. 2012 May 2;110:15-21. doi: 10.1016/j.jphotobiol.2012.02.004. Epub 2012 Feb 16.
The nanocrystalline ZnO, TiO(2) and ZnO/TiO(2) films are deposited onto FTO-coated glass substrates by using spray pyrolysis technique. The structural, morphological, optical and photoelectrochemical properties of the ZnO, TiO(2) and ZnO/TiO(2) are investigated by X-ray diffraction, scanning electron microscopy, UV-Vis spectroscopy and photoelectrochemical techniques. XRD analysis shows that films are polycrystalline and having hexagonal and tetragonal crystal structure for pure ZnO and TiO(2). The photocatalytic degradation of methylene blue has been investigated with ZnO, TiO(2) and ZnO/TiO(2) photocatalysts. ZnO/TiO(2) thin films have proved quite effective mineralization of methylene blue, while pure ZnO and TiO(2) do not lead complete mineralization of methylene blue. The metabolites produced during degradation are analyzed by HPLC and Fourier transforms infrared spectroscopy. The by-products detected during degradation have been identified by GCMS technique.
采用喷雾热解技术将纳米晶 ZnO、TiO(2) 和 ZnO/TiO(2) 薄膜沉积在 FTO 涂层玻璃基底上。通过 X 射线衍射、扫描电子显微镜、紫外-可见分光光度计和光电化学技术研究了 ZnO、TiO(2) 和 ZnO/TiO(2) 的结构、形貌、光学和光电化学性质。XRD 分析表明，薄膜为多晶，具有六方和四方晶体结构，纯 ZnO 和 TiO(2) 均为多晶。用 ZnO、TiO(2) 和 ZnO/TiO(2) 光催化剂研究了亚甲基蓝的光催化降解。ZnO/TiO(2) 薄膜对亚甲基蓝的矿化作用相当有效，而纯 ZnO 和 TiO(2) 则不能使亚甲基蓝完全矿化。通过高效液相色谱和傅里叶变换红外光谱分析降解过程中产生的代谢物。通过 GCMS 技术鉴定降解过程中检测到的副产物。
