不同实验因素对氧化锌光催化性能的影响  

Influences of Different Experimental Factors on Photocatalytic Performance of Zinc Oxide

作　　者：周珊[1] 陶辉锦[1,2] 尹健[3] 张东阳 许昊[1] 

机构地区：[1]中南大学材料科学与工程学院,湖南长沙410083 [2]中南大学有色金属材料科学与工程教育部重点实验室,湖南长沙410083 [3]粉末冶金国家重点实验室,湖南长沙410083

出　　处：《矿冶工程》2017年第5期95-98,104,共5页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(21373273;51302322);中南大学贵重仪器设备开放共享基金(CSUZC201708;CSUZC201613);中南大学教育改革项目(2016jy03;2016CLYJG02);广东省金属强韧化技术与应用重点实验室(广东省材料与加工研究所)开放课题(GKL201605)

摘　　要：以氯化锌和氢氧化钠等为原料,借助正交实验设计方法,通过水热法合成了具有不同形貌和光催化活性的ZnO粉体材料。采用XRD、SEM及紫外-可见分光光度计等表征方法研究了Zn^(2+)/OH^-离子比、Zn^(2+)浓度、水热温度和水热时间等因素对ZnO微观形貌和光催化性能的影响。结果表明,Zn^(2+)/OH^-离子比对ZnO的粒径、微观形貌和光催化性能有较大的影响。当Zn^(2+)/OH^-离子比为1∶5时,ZnO粉末样品呈现二维片层状形貌,且光催化活性优于长径比较大的棒状或棱柱状ZnO,这可能是片状形貌ZnO的比表面积和活性面较大的缘故。Zinc oxide powder materials with different morphologies and photocatalytic activities were prepared from zinc chloride and sodium hydroxide by hydrothermal method based on the orthogonal experiment design method. The effects of mole ratio of Zn^2＋/OH^-,concentration of Zn^2＋,hydrothermal temperature and time on the microstructure and photocatalytic performance of ZnO were studied by XRD,SEM and ultraviolet-visible spectrophotometer. Results suggest the mole ratio of Zn^2＋/OH^-has a major influence on the particle size,morphology and photocatalytic activity of ZnO.The planar sheet-like ZnO prepared with the mole ratio of Zn^2＋/OH^-at 1∶ 5 has better photocatalytic property than the rod-like or prismatic ZnO due to the larger specific surface area and active surface.

关 键 词：正交设计 二维片层状氧化锌粉末 水热法 光催化 

分 类 号：TB321[一般工业技术—材料科学与工程]