文献类型：期刊文献

英文题名：The adsorption property of in-situ synthesis of MOF in alginate gel for ofloxacin in the wastewater

作者：Yu, Ruobing[1];Wu, Zhicong[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2023

卷号：44

期号：16

起止页码：2395

外文期刊名：ENVIRONMENTAL TECHNOLOGY

收录：;EI(收录号：20220711614409);WOS:【SCI-EXPANDED(收录号:WOS:000750242400001)】；

基金：The authors acknowledge the financial support from East China University of Science and Technology.

语种：英文

外文关键词：In-situ synthesis of metal-organic frameworks; alginate gel; ZIF-8; adsorption; wastewater treatment

摘要：Although metal-organic frameworks (MOFs) are advantageous to the removal of organic pollutants, the general MOFs in powder form is disadvantageous to their practical applications. In-situ MOF synthesis in alginate gel is a good way to fabricate an MOF composite for many applications, which is different from blending MOF particles with polymers. In-situ synthesis of Zeolitic Imidazolate Framework-8 (ZIF-8) in alginate gel is in the form of beads with rough wrinkles and has many pores inside. When used as an absorbent, in-situ synthesis of ZIF-8 in alginate gel could remove 97.7 +/- 0.9% of ofloxacin from ofloxacin solution and the equilibrium adsorption capacity is up to 160.6 +/- 1.3 mg/g. During the adsorption, ofloxacin is first brought into the gel by the solvent exchange and gel microchannel adsorption, and it can then be absorbed by in-situ ZIF-8. Moreover, the adsorption efficiency can reach 85.5% even after four cycles of adsorption. We believe that in-situ synthesis of ZIF-8 in alginate gel will be an appropriate material for the removal of ofloxacin in the wastewater.