文献类型：期刊文献

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

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Tongji Univ, Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[3]East China Univ Sci & Technol, Shanghai Environm Protect Key Lab Environm Stand, Shanghai 200237, Peoples R China

年份：2019

卷号：86

起止页码：213

外文期刊名：JOURNAL OF ENVIRONMENTAL SCIENCES

收录：;EI(收录号：20192507079095);WOS:【SCI-EXPANDED(收录号:WOS:000499949600020)】；

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

语种：英文

外文关键词：Metal organic frameworks; MIL-101(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-88C(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 pH 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. (c) 2019 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.