Electrochemical Materials Laboratory, Department of Physics, Shivaji University, Kolhapur 416 004, India.
J Photochem Photobiol B. 2012 Aug 1;113:70-7. doi: 10.1016/j.jphotobiol.2012.05.008. Epub 2012 May 19.
Thin films of N-doped ZnO are synthesized via spray pyrolysis technique in aqueous medium using zinc acetate and ammonium acetate as precursors. Influence of N doping onto photochemical, structural, morphological, optical and thermal properties have been investigated. Structural analysis depicts hexagonal (wurtzite) crystal structure. The effect of N doping on the photocatalytic activity of N-doped ZnO in the degradation of toluene is studied and results are compared with pure ZnO. The results show that the rate of degradation of toluene over N-doped ZnO is higher as compared to that of pure ZnO and increases with increasing N doping up to 10 at.% and then decreases. The enhancement of photocatalytic activity of N-doped ZnO thin films is mainly due to their capability for reducing the electron hole pair recombination. The photocatalytic mineralization of toluene in aqueous solution has been studied by measuring COD and TOC. Possible reaction mechanism pathways during toluene degradation over N-doped ZnO has been proposed.
采用水相喷雾热解法，以乙酸锌和乙酸铵为前驱体，合成了掺氮氧化锌薄膜。研究了氮掺杂对光化学、结构、形貌、光学和热性能的影响。结构分析表明具有六方（纤锌矿）晶体结构。研究了氮掺杂对掺氮氧化锌在甲苯降解中光催化活性的影响，并与纯氧化锌进行了比较。结果表明，与纯氧化锌相比，掺氮氧化锌对甲苯的降解速率更高，随着氮掺杂量的增加（最高达 10at.%）而增加，然后降低。掺氮氧化锌薄膜光催化活性的增强主要归因于其减少电子-空穴对复合的能力。通过测量 COD 和 TOC，研究了甲苯在水溶液中的光催化矿化。提出了在掺氮氧化锌上降解甲苯的可能反应机制途径。
