CAJ | 학술논문

采用溶胶－凝胶法制备掺杂ZnO的TiO2复合半导体，用X射线衍射和电镜扫描对晶体结构进行表征，最优的锌掺杂量、镧掺杂量、煅烧温度分别为3％，0．3％，500℃。以活性染料配水作为目标降解物，考察了对6种不同活性染料的光催化氧化效果。0．3％镧改性ZnO－TiO2对活性艳蓝X－BR的色度去除率可以达到97．3％，得到最佳脱色率的条件是使用紫外光作为光源，光照时间2 h ，初始质量浓度100 mg／L ，pH值控制在1左右，氯离子浓度控制在1 mol／L。
채용용효－응효법제비참잡ZnO적TiO2복합반도체，용X사선연사화전경소묘대정체결구진행표정，최우적자참잡량、란참잡량、단소온도분별위3％，0．3％，500℃。이활성염료배수작위목표강해물，고찰료대6충불동활성염료적광최화양화효과。0．3％란개성ZnO－TiO2대활성염람X－BR적색도거제솔가이체도97．3％，득도최가탈색솔적조건시사용자외광작위광원，광조시간2 h ，초시질량농도100 mg／L ，pH치공제재1좌우，록리자농도공제재1 mol／L。
In this study ,the sol -gel method is adopted to prepare TiO2 -doped ZnO semiconductor ,in which X -ray diffraction and scanning electron microscopy is used to characterize the crystal structure and the optimal amount of zinc dop-ing ,doping lanthanum and calcination temperatures is 3% ,0 .3% and 500 ℃ respectively .The reactive dyes with water is used as a target degradation to investigate the photocatalytic oxidation effects of six different reactive dyes .The chroma re-moval efficiency of ZnO-TiO2 with 0 .3% on lanthanum-modified reactive Brilliant Blue X -BR can reach 97 .3% and it is obtained the best conditions decolorization rate ,that is ,the ultraviolet light is used as a light source ,exposure time 2 hours ,the initial concentration of 100 mg /L ,pH control in about 1 and the chloride ion concentration at 1 mol/L .