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离子液体辅助溶剂热法合成高效光催化剂Bi2WO6及其光催化性能研究

发表时间:2016-07-15  浏览量:4177  下载量:2291
全部作者: 潘改芳,霍宇凝,李和兴
作者单位: 上海师范大学生命与环境科学学院
摘 要: 采用离子液体辅助溶剂热法制备可见光催化剂Bi2WO6,并考察其可见光催化活性。乙二醇-乙醇体系中,以离子液体1-烷基-3-甲基咪唑四氟硼酸盐[Cn-mim]BF4(n=2,4,8,16)为结构导向剂,合成的中空微球结构的Bi2WO6具有明显增强的光催化活性。通过改变釜热时间、离子液体用量以及离子液体中烷基碳链长度,采用降解有机污染物罗丹明B作为光催化探针反应,优化出最佳反应条件:釜热时间为20 h,离子液体用量为15 μL,离子液体中烷基链的碳原子个数为16个([C16mim]BF4)。
关 键 词: 催化化学;Bi2WO6;可见光催化;离子液体辅助溶剂热法;有机物降解
Title: Ionic liquid-assisted solvothermal synthesis of highly active Bi2WO6 photocatalyst and its photocatalytic activity
Author: PAN Gaifang, HUO Yuning, LI Hexing
Organization: College of Life and Environmental Sciences, Shanghai Normal University
Abstract: Photocatalyst Bi2WO6 has been synthesized by using solvothermal process assisted with ionic liquid, and its photocatalytic activity was investigated. In the glycol-ethanol system and [Cn-mim]BF4 (n=2, 4, 8, 16) ionic liquid acts as structure-directing agent, Bi2WO6 with hollow microspheres presents the greatly enhanced photocatalytic activity. By changing the solvothermal time, the amount of ionic liquid and alkyl chain length of ionic liquid, the optimal reaction conditions during the photocatalytic degradation of rhodamine B organic pollutants as a probe has been demonstrated as 20 h, 15 μL and [C16mim] BF4.
Key words: catalytic chemistry; Bi2WO6; visible-light photocatalysis; ionic-liquid-assisted solvothermal process; degradation of organic compound
发表期数: 2016年7月第13期
引用格式: 潘改芳,霍宇凝,李和兴. 离子液体辅助溶剂热法合成高效光催化剂Bi2WO6及其光催化性能研究[J]. 中国科技论文在线精品论文,2016,9(13):1352-1358.
 
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