首页 | 本学科首页   官方微博 | 高级检索  
     

超临界水连续合成纳米氧化锌及其光催化性能
引用本文:毛志强,冷远鹏,赵亚平. 超临界水连续合成纳米氧化锌及其光催化性能[J]. 无机盐工业, 2013, 45(10): 53
作者姓名:毛志强  冷远鹏  赵亚平
作者单位:上海交通大学化学化工学院,上海 200240
摘    要:采用超临界水连续合成法制备了纳米氧化锌颗粒并对其光催化性能进行了研究。当反应温度为385 ℃, 反应压力为25 MPa, 反应时间为40 s, 反应物Zn2+和OH-的浓度分别为0.075、0.3 mol/L时, 获得了粒径为30 nm的球形纳米氧化锌。以甲基橙溶液为光催化模型物,在紫外光照射下,所制备的纳米氧化锌对甲基橙的降解率可达到100%,并且纳米氧化锌的浓度和分散性对光催化效率有显著影响。

关 键 词:超临界水  氧化锌  纳米粒子  光催化  

Continuous preparation of nano-sized zinc oxide by supercritical water technique and photocatalytic activity thereof
Mao Zhiqiang , Leng Yuanpeng , Zhao Yaping. Continuous preparation of nano-sized zinc oxide by supercritical water technique and photocatalytic activity thereof[J]. Inorganic Chemicals Industry, 2013, 45(10): 53
Authors:Mao Zhiqiang    Leng Yuanpeng    Zhao Yaping
Affiliation:School of Chemistry and Chemical Engineering,Shanghai Jiaotong University,Shanghai 200240,China
Abstract:Zinc oxide(ZnO)nanoparticles were synthesized by continuous supercritical water technique and its photo-catalytic performance was studied.When reaction conditions were at the reaction temperature of 385 ℃,the pressure of 25 MPa, the reaction time of 40 s,and the reactant concentrations of Zn2+ and OH- of 0.075 mol/L and 0.3 mol/L,respectively,spherical ZnO nanoparticles of 30 nm were obtained.Methyl orange solution was taken as a model of light catalytic reaction.Results indicated that the degradation of methyl orange reached 100% via as-synthesized nano-sized ZnO as photocatalyst under ultraviolet light,and the concentration and dispersibility of nano-sized ZnO had a significant impact on the photocatalytic efficiency.
Keywords:supercritical water  zinc oxide  nanoparticle  photocatalyst
本文献已被 万方数据 等数据库收录!
点击此处可从《无机盐工业》浏览原始摘要信息
点击此处可从《无机盐工业》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号