文献类型：期刊文献

英文题名：Investigating the photocatalytic reduction of U(VI) over a single-atom Fe complex catalyst

作者：Hu, Zhengfeng[1,2];Liu, Zhixin[1,3];Tay, Chia Chay[3];Bao, Linfa[1];Qiu, Muqing[1]

机构：[1]Shaoxing Univ, Sch Life & Environm Sci, Shaoxing 312000, Peoples R China;[2]Ecol & Environm Sci & Res Inst Zhejiang Prov, Key Lab Environm Pollut Control Technol Res Zhejia, Hangzhou 310007, Zhejiang, Peoples R China;[3]Univ Teknol MARA, Fac Appl Sci, Shah Alam 40450, Selangor, Malaysia

年份：2024

卷号：411

外文期刊名：JOURNAL OF MOLECULAR LIQUIDS

收录：SCI-EXPANDED(收录号：WOS:001298048900001)、、EI(收录号：20243416914389)、Scopus(收录号：2-s2.0-85201502899)、WOS

基金：The authors would like to thank their respective institutes for their support in this research.

语种：英文

外文关键词：U(VI) photoreduction; Single-atom Fe photocatalyst; Carbon nitride; X-ray absorption spectroscopy

外文摘要：Fabrication of effective photocatalyst for the U(VI) reduction is a promising approach to disposing the great challenges posed by rising the rapid development of nuclear energy. Herein, it rationally designed a single-atom Fe anchored g-C3N4 3 N 4 support (Fe-g-C3N4, 3 N 4 , Fe-N4 4 moiety), showing the ultrahigh photocatalytic performance towards over wide pH range of 3.0-8.0, outer-performing pristine g-C3N4 3 N 4 by 82 times. Combination with X-ray photoelectron spectroscopy and X-ray absorption near-edge structure spectroscopy, the highly photoreduction of U(VI) could be attributed to the highly activity of g-C3N4 3 N 4 and Fe2+. 2 + . According to quenching experiments and EPR spectra, it is demonstrated that the superoxide (& sdot;O2-) & sdot; O 2 - ) radicals played an important role in the photoreduction of U (VI) on Fe-g-C3N4 3 N 4 rather than & sdot; OH and 1 O 2 species. These findings are crucial for the actual application of single- atom photocatalyst in environmental remediation.