水热法制备片状纳米氧化镍及其光催化性能  

PREPARATION OF NIO NANOSHEETS BY HYDROTHERMAL METHOD AND ITS PHOTOCATALYTIC ACTIVITY

作　　者：娄向东[1] 楚文飞[1] 韩珺[1] 赵晓华[1] 安娜[1] 席国喜[1] 

机构地区：[1]河南师范大学化学与环境科学学院河南省环境污染控制重点实验室,河南新乡454007

出　　处：《水处理技术》2007年第11期23-27,共5页Technology of Water Treatment

基　　金：河南省教育厅自然科学基金项目(200510476007)

摘　　要：采用水热法制备片状纳米NiO,用XRD和TEM对样品的晶型及颗粒形貌进行了表征。以蒽醌染料KN-R为对象,紫外灯为光源,研究了催化剂热处理温度、催化剂用量、光照时间、染料的初始浓度等因素对染料脱色率的影响,以及催化剂的重复利用效果。结果表明:NiO催化剂能显著降解蒽醌染料KN-R,且能重复利用,在未曝气供氧时,NiO的催化活性优于p-25 TiO2。NiO nanosheets was prepared by the hydrothermal method; its microstructure and morphology were analyzed by XRD, TEM. The effect of heat treatment temperature and dosage of catalyst, time of irradiation, initial concentration of the dyestuff KN-R,and the repeated use of catalyst on decolorization rate of the dyestuffwas investigated.With authraquinone KN-R as treating object and UV lamp as irradiation source,the results showed that NiO nanosheets could degrade KN-R solution effectively;the catalyst could be used repeatedly;and its photocatalytic activity is better than that of p-25 TiO2 in the same conditions.

关 键 词：氧化镍 脱色 蒽醌染料KN-R 水热法 纳米薄片 

分 类 号：TQ031.7[化学工程]