期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 24, 页码 21619-21626出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b06068
关键词
metal-organic framework; zero-valent iron; uranyl; adsorption; nano-MOF+ technique
资金
- National Natural Science Foundation of China [21825601, 21790374, U1532259, 11605118]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Hundred-Talent Program of Zhejiang University
The nano-MOF+ technique was employed by assembling nanoporous metal-organic framework (MOF) UiO-66 with nanoscale zero-valent iron (ZVI) particles to remove uranyl ions from aqueous solution under anoxic condition for the first time. The synthesized composite of Fe-0@UiO-66-COOH exhibits a synergic effect between uranyl sorption by MOF host of UiO-66-COOH and chemical reduction by ZVI, reaching much elevated removal capacity and rate in comparison to those of the pristine UiO-66-COOH. The combined complexation and reduction mechanisms are further elucidated by the synchrotron radiation X-ray absorption near-edge structure analysis. This work highlights the bright future of the nano-MOF+ technique in the application of uranium removal, especially for the remediation of the uranium-contaminated subsurface environment.
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