海水
铀
生物污染
萃取(化学)
人工海水
钨
吸附
可重用性
化学
环境化学
铀酰
材料科学
化学工程
地质学
有机化学
冶金
生物化学
海洋学
工程类
程序设计语言
膜
计算机科学
软件
作者
Wei Wang,Qi Luo,Jinyang Li,Yunhong Li,Ronggen Wu,Yilan Li,Xiaobing Huo,Ning Wang
标识
DOI:10.1016/j.cej.2021.133483
摘要
Uranium is the essential element for nuclear power industry. Selective uranium extraction from seawater is very attractive, but challenging because ubiquitous marine biofouling seriously impairs the uranium extraction capacity and reusability of absorbents in bio-aggressive seawater. Herein, we construct a reusable nanozyme for uranium recovery from seawater based on atomically dispersed tungsten anchored on metal organic frameworks (W-UiO). We illustrate that W-UiO nanozyme mimics naturally occurring vanadium haloperoxidase that catalytically converting halides to biocidal hypobromous acid, inducing strong antibiofouling activity against marine microbial colonization. As demonstrated, W-UiO nanozyme shows superb reusability in raw seawater simultaneously, preserving a 78.0% of its initial uranium capture capacity (6.8 times higher than its pristine counterpart) after five consecutive adsorption-desorption cycles. This study is anticipated to spur rationally realizing robust absorbents by mimicking the natural enzymes for practical application in uranium recovery from seawater.
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