Adsorption of arsenate on lanthanum-impregnated activated alumina:In situ ATR-FTIR and two-dimensional correlation analysis study

作     者：Qian-Tao Shi Wei Yan 

作者机构：State Key Laboratory of Environmental Chemistry and EcotoxicologyResearch Center for Eco-Environmental SciencesChinese Academy of Sciences 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2015年第26卷第2期

页      面：200-204页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDB14020201) the National Basic Research Program of China(No. 2014CB441102) the National Natural Science Foundation of China(No.21477144) the Young Scientists Fund of RCEES, RCEES-QN-20130017F 

主　　题：Arsenic Adsorption Lanthanum impregnated activated alumina Two dimensional(2D) correlation 

摘      要：Lanthanum modified materials have been widely used for the removal of hazardous *** this study,in situ ATR-FTIR and two-dimensional correlation analysis were employed to investigate the adsorption mechanism of arsenate（As（V）） on lanthanum-impregnated activated alumina（LAA）.Our results showed that electrostatic interaction attracted As（V） anions to the LAA surface,and then As（V） could form monodentate configuration on the LAA surface at pH *** result of 2D-COS showed that two coexistent adsorbed As（V） species,H2AsO4^- and HAsO4^2-,were adsorbed on the LAA surface without specific sequence at different pH conditions,indicating a negligible role of the incorporated protons of As（V） on the adsorption affinity to LAA *** results of this study reveal insights into LAA surface complexes on the molecular scale and provide theoretical support to new metal oxides design for efficient arsenic removal.