Shapeable sodium alginate aerogel beads incorporated with L-cysteine-modified defective UiO-67 for heavy metal ions removal

Mengshuo Du,Youyu Cao,Xueli Luo,Weixia Yang,Wanmei Lin,Yingying Wang,Wenzhi Tang,Zhonghong Li

Chemical Engineering Journal（2023）

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摘要

•OA with 8 carbons provides better adsorption capacity through steric hindrance.•–COOH competes between OA/H2bpydc and H2bpdc to bind Zr cluster to form defects.•L-cysteine modification introduces more adsorption sites such as –COOH and –SH.•Easy recyclability and separation of aerogel beads were provided.•Adsorption capacity for Pb2+, Cd2+ and Cu2+ increased by 66.2, 10.7 and 5.8 times.

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关键词

Defect MOF,Post-synthetic modification,Aerogel beads,Heavy metal ions,Removal

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