南京农业大学学报2012，Vol.35Issue(3)：127-130,4.
施氏矿物和有机酸共存体系中孔雀石绿的多相光催化降解
Heterogeneous photocatalytic degradation of malachite green in the presence of schwertmannite and organic acids
摘要
Abstract
Schwertmannite was synthesized through an oxidation of FeSO4 by Acidithiobacillus ferrooxidans and the photocatalytic degradation of malachite green in the presence of schwertmannite and organic acids ( oxalic acid, citric acid, tartaric acid ) was investigated. The results showed that a weak adsorption of malachite green by schwertmannite was observed in dark. Under UV irradiation, the degradation of malachite green was markedly enhanced by schwertmannite alone, and it could be further accelerated when organic acids were introduced into the reaction system. Under the same experimental conditions, the schwertmannite photocatalytic degradation of malachite green assisted by organic acids was in the order:oxalic acid,citric acid,tartaric acid. The mechanism of malachite green in this study was proposed. First, organic acids were adsorbed onto schwertmannite and Fe (III)-organic acid complexes with a high photo-activity were formed. Then, UV irradiation led to the yield of ·OH responsible for the decomposition of malachite green.关键词
施氏矿物/光催化降解/孔雀石绿/有机酸Key words
schwertmannite/photocatalytic degradation/malachite green/organic acids分类
资源环境引用本文复制引用
李瑛,吴振禹,周立祥,兰叶青..施氏矿物和有机酸共存体系中孔雀石绿的多相光催化降解[J].南京农业大学学报,2012,35(3):127-130,4.基金项目
国家自然科学基金项目(40930738) （40930738）
中央高校基本科研业务专项基金资助项目(KYZ201124) （KYZ201124）
