低共熔溶剂辅助水热法合成分层球状微/纳米ZnO晶体及其光催化性能  

Synthesis of Multi-layered Spherical ZnO Micro/Nano-crystals by Hydrothermal Method from Deep Eutectic Solvent and Their Photo Catalytic Performance

作　　者：李奡麒 陈玉娟[1] 胡晓宇[1] 卓克垒[1] 

机构地区：[1]河南师范大学化学化工学院绿色化学介质与反应省部共建教育部重点实验室精细化学品绿色制造河南省协同创新中心,新乡453007

出　　处：《高等学校化学学报》2015年第1期165-170,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21173070,20973055);河南省科技创新杰出人才计划(批准号:124200510014)资助~~

摘　　要：使用尿素-氯化胆碱低共熔溶剂(UCC-DES),采用水热合成和反溶剂(乙醇)法,以化工材质ZnO粉末为原料制备了分层的球状微/纳米ZnO晶体.分析了反应时间、反溶剂的种类和含量对ZnO晶体形貌的影响以及ZnO晶体析出的原因.并将制备的分层球状ZnO微/纳米晶体应用于光催化降解甲基橙.结果表明,制备的ZnO晶体对甲基橙有良好的光催化降解性能.Multi-layered spherical ZnO micro/nano-crystals were synthesized by means of hydrothermal and antisolvent method from the urea-choline chloride deep eutectic solvent（UCC-DES）. The effects of reaction time, amount and concentrations of antisolvents on the morphology of ZnO micro/nano-crystals were investi- gated, and the formation of ZnO micro/nano-crystals was discussed. Furthermore, the photocatalytic activities of the as-prepared ZnO crystals for the degradation of methyl orange were investigated. The results indicate that multi-layered spherical ZnO micro/nano-crystals exhibit a superior photocatalytic activity. The synthetic method of ZnO is facile, safe and environmentally friendly, it is in line with the requirements of green chemis- try and should have widespread application in the future.

关 键 词：低共熔溶剂 反溶剂 氧化锌 微/纳米晶体 

分 类 号：O644[理学—物理化学] O614.2[理学—化学]