CAJ | 학술논문

二氧化钛光催化氧化技术是目前比较有效的环境治理新技术，而开发高效二氧化钛光催化材料是该技术得以推广应用的前提。采用一种简单的浸渍法成功制备出氧化锌/氧化钛复合纳米光催化剂，并进行了XRD、XPS和SEM等测试表征。从测试结果发现，pH值对样品的光催化活性有重要影响。经对比样品对亚甲基蓝的降解率随着pH值的上升而增加，当pH值为12时，样品的光催化活性达到最高。根据我们对机理的深入分析，发现氧化锌和二氧化钛之间的协同作用是导致该复合催化剂具有如此高的催化活性的根本原因。
이양화태광최화양화기술시목전비교유효적배경치리신기술，이개발고효이양화태광최화재료시해기술득이추엄응용적전제。채용일충간단적침지법성공제비출양화자/양화태복합납미광최화제，병진행료XRD、XPS화SEM등측시표정。종측시결과발현，pH치대양품적광최화활성유중요영향。경대비양품대아갑기람적강해솔수착pH치적상승이증가，당pH치위12시，양품적광최화활성체도최고。근거아문대궤리적심입분석，발현양화자화이양화태지간적협동작용시도치해복합최화제구유여차고적최화활성적근본원인。
The TiO2 photocatalytic oxidation technology is a novel pollution treatment process in recent decade, and developing the efficient TiO2 photocatalysts is the premise for application of this technique. The ZnO/TiO2 composite photocatalysts have been successfully prepared by a simple impregnation route and characterized by XRD, XPS and SEM analysis. The results show that the pH value plays an important role on the photocatalytic activity of ZnO/TiO2 composites. The degradation rate of methylene blue (MB) is significantly improved with the increasing of the pH value. And the ZnO/TiO2 composites exhibit the best photocatalytic activity when the pH value is 12. Based on the in-depth analysis of mechanistic, it is considered that the synergistic effect between ZnO and TiO2 is responsible for the enhanced performance of this composite catalyst.