First Author:Shucheng Ren

Correspondence Author:Dun Niu, Hong-bin Sun*, Qionglin Liang

Co author:Yongjian Ai, Xinyue Zhang, Man Ruan, Ze-nan Hu, Lei Liu, Jifan Li, Yao Wang, JiaXing Liang, Hongna Jia, YangYang Liu

Journal:Acs Sustainable Chemistry & Engineering

Issue:1

Volume:8

Impact Factor:7.1

DOI number:10.1021/acssuschemeng.9b05802

Affiliation of Author(s):Department of Chemistry, Northeastern University

Teaching and Research Group:物理化学

Place of Publication:UNITED STATES

Abstract:In recent years, the removal of antimony(III) (Sb(III)) contaminant from water has caused widespread concern. Herein, two adsorbents have been successfully developed to remove Sb(III) from water and systemically characterized. One is the composite of magnetic mesoporous carbon nanospheres (Fe3O4@CNs) with Fe2O3 particles that is represented as Fe3O4@Fe2O3@CNs, and the other one is mesoporous carbon nanosphere-accommodated Fe2O3 particles noted as Fe2O3@CNs. Both adsorbents have the advantages of magnetic separation and high Sb(III) removal capacity. The adsorption properties of Sb(III) on both adsorbents were studied by the experiments of adsorption isotherms and kinetics. The results show that the adsorption behaviors on both adsorbents follow the Langmuir isotherm model and pseudo-second-order kinetic model. The maximum Sb(III) adsorption capacity of Fe3O4@Fe2O3@CNs and Fe2O3@CNs is 234.28 and 102.84 mg/g, respectively. The high capacity can be attributed to the adsorption-active Fe2O3 particles that are well confined inside the carbon matrix. Furthermore, it is also of great research value to turn the adsorbed Sb(III) into resources utilization. We developed the subsequent treatment of the waste adsorbents, which were manufactured to magnetically recoverable catalysts for the esterification and 1,2,3-triazoles synthesis, respectively, and both of them exhibited good catalytic activity. It provides a promising candidate for avoiding the secondary pollution of Sb(III).

Key Words:adsorption of antimony, iron oxide, carbon nanospheres, magnetic catalyst

Document Code:WOS:000507429100053

Discipline:Natural Science

First-Level Discipline:Chemistry

Page Number:469-477

ISSN No.:2168-0485

Translation or Not:no