文献类型：期刊文献

中文题名：Removal of antimonite and antimonate from water using Fe-based metal-organic frameworks: The relationship between framework structure and adsorption performance

英文题名：Removal of antimonite and antimonate from water using Fe-based metal-organic frameworks: The relationship between framework structure and adsorption performance

作者：Wei Zhang[1,2];Na Li[1,2,3];Ting Xiao[1,2,3];Wenting Tang[1,2,3];Guangli Xiu[1,2,3]

机构：[1]State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process,School of Resources and Environmental Engineering,East China University of Science and Technology,Shanghai 200237,China;[2]Shanghai Institute of Pollution Control and Ecological Security,Tongji University,Shanghai 200092,China;[3]Shanghai Environmental Protection Key Laboratory on Environmental Standard and Risk Management of Chemical Pollutants,East China,University of Science and Technology,Shanghai 200237,China

年份：2019

卷号：31

期号：12

起止页码：213

中文期刊名：Journal of Environmental Sciences

外文期刊名：环境科学学报（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2019_2020】；PubMed;

基金：supported by the National Natural Science Foundation of China (No. 41201302);the Natural Science Foundation of Shanghai (No. 17ZR1407000);the Fundamental Research Funds for the Central Universities (No. 222201514337)

语种：英文

中文关键词：Metal organic frameworks;MIL-101(Fe);Antimonite;Antimonate;Cage windows;Steric hindrance

外文关键词：Metal organic frameworks;MIL-lOl(Fe);Antimonite;Antimonate;Cage windows;Steric hindrance

摘要：We investigated the adsorption performance of five Fe-based MOFs(Fe-BTC,MIL-100(Fe),MIL-101(Fe),MIL-53(Fe)and MIL-88 C(Fe))for removal of antimonite(Sb(Ⅲ))and antimonate(Sb(Ⅴ))from water.Among these MOFs,MIL-101(Fe)exhibited the best adsorption capacities for both Sb(Ⅲ)and Sb(Ⅴ)(151.8 and 472.8 mg/g,respectively)which were higher than those of most adsorbents previously reported.The effect of steric hindrance was evident during Sb removal using the Fe-based MOFs,and the proper diameter of the smallest cage windows/channels should be considered an important parameter during the evaluation and selection of MOFs.Additionally,the adsorption capacities of MIL-101(Fe)for Sb(Ⅴ)decreased with increasing initial p H values(from 3.0 to 8.0),while the opposite trend was observed for Sb(Ⅲ).Chloride,nitrate and sulfate ions had a negligible influence on Sb(Ⅴ)adsorption,while NO3-and SO42-improved Sb(Ⅲ)adsorption.This result implies that inner sphere complexes might form during both Sb(Ⅲ)and Sb(Ⅴ)adsorption.
We investigated the adsorption performance of five Fe-based MOFs（Fe-BTC, MIL-100（Fe）,MIL-101（Fe）, MIL-53（Fe） and MIL-88 C（Fe）） for removal of antimonite（Sb（Ⅲ）） and antimonate（Sb（Ⅴ）） from water. Among these MOFs, MIL-101（Fe） exhibited the best adsorption capacities for both Sb（Ⅲ） and Sb（Ⅴ）（151.8 and 472.8 mg/g, respectively） which were higher than those of most adsorbents previously reported. The effect of steric hindrance was evident during Sb removal using the Fe-based MOFs, and the proper diameter of the smallest cage windows/channels should be considered an important parameter during the evaluation and selection of MOFs. Additionally, the adsorption capacities of MIL-101（Fe） for Sb（Ⅴ）decreased with increasing initial p H values（from 3.0 to 8.0）, while the opposite trend was observed for Sb（Ⅲ）. Chloride, nitrate and sulfate ions had a negligible influence on Sb（Ⅴ）adsorption, while NO3- and SO42- improved Sb（Ⅲ） adsorption. This result implies that inner sphere complexes might form during both Sb（Ⅲ） and Sb（Ⅴ） adsorption.