硅酸盐学报2016，Vol.44Issue(5)：726-732,7.DOI:10.14062/j.issn.0454-5648.2016.05.16
不同阴离子插层锌铝水滑石对亚甲基蓝的光催化性能
Photocatalytic Degradation of Methylene Blue by ZnAl Layered Double Hydroxides Intercalated with Different Anions
曹根庭 1薛继龙 2夏盛杰 2倪哲明2
作者信息
- 1. 浙江海洋学院海洋科学与技术学院，浙江 舟山 316004
- 2. 浙江工业大学化学工程学院，杭州 310014
- 折叠
摘要
Abstract
ZnAl layered double hydroxides (LDHs) intercalated with different anions (i.e., nitrate, chloride and carbonate) were synthesized by a coprecipitation method. The LDH catalysts were characterized by powder X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetry–mass spectroscopy and ultraviolet-visible diffuse reflectance spectroscopy, respectively. In addition, the photocatalytic degradation properties for methylene blue (MB) by these LDH materials under visible light were also investigated. The results show that LDH samples intercalated with different anions show different photodegradation efficiency for MB and ZnAl-LDHs intercalated with carbonate and exhibits the maximum catalytic activity. The removal rates of MB under irradiation of a visible lamp for 180 min are 95% for ZnAl-CO3 LDHs, 70% for ZnAl-Cl LDHs and 62% for ZnAl-NO3 LDHs, respectively. Moreover, the kinetic parameters and possible photocatalytic pathways for MB decomposition by the ZnAl-LDHs intercalated with different anions were also analyzed.关键词
锌铝水滑石/阴离子插层/光催化降解/亚甲基蓝/动力学Key words
zinc aluminium layered double hydroxides/anion intercalation/photocatalytic degradation/methylene blue/kinetic分类
化学化工引用本文复制引用
曹根庭,薛继龙,夏盛杰,倪哲明..不同阴离子插层锌铝水滑石对亚甲基蓝的光催化性能[J].硅酸盐学报,2016,44(5):726-732,7.
