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

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

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 support (Fe-g-C3N4, Fe-N4 moiety), showing the ultrahigh p...

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Bibliographic Details
Published in:Journal of Molecular Liquids
Main Author: Hu Z.; Liu Z.; Tay C.C.; Bao L.; Qiu M.
Format: Article
Language:English
Published: Elsevier B.V. 2024
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85201502899&doi=10.1016%2fj.molliq.2024.125774&partnerID=40&md5=206b2d4e92f643a8210083353b21bc6b
id 2-s2.0-85201502899
spelling 2-s2.0-85201502899
Hu Z.; Liu Z.; Tay C.C.; Bao L.; Qiu M.
Investigating the photocatalytic reduction of U(VI) over a single-atom Fe complex catalyst
2024
Journal of Molecular Liquids
411

10.1016/j.molliq.2024.125774
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85201502899&doi=10.1016%2fj.molliq.2024.125774&partnerID=40&md5=206b2d4e92f643a8210083353b21bc6b
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 support (Fe-g-C3N4, Fe-N4 moiety), showing the ultrahigh photocatalytic performance towards over wide pH range of 3.0–8.0, outer-performing pristine g-C3N4 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 and Fe2+. According to quenching experiments and EPR spectra, it is demonstrated that the superoxide (·O2–) radicals played an important role in the photoreduction of U(VI) on Fe-g-C3N4 rather than ·OH and 1O2 species. These findings are crucial for the actual application of single-atom photocatalyst in environmental remediation. © 2024 Elsevier B.V.
Elsevier B.V.
1677322
English
Article
author Hu Z.; Liu Z.; Tay C.C.; Bao L.; Qiu M.
spellingShingle Hu Z.; Liu Z.; Tay C.C.; Bao L.; Qiu M.
Investigating the photocatalytic reduction of U(VI) over a single-atom Fe complex catalyst
author_facet Hu Z.; Liu Z.; Tay C.C.; Bao L.; Qiu M.
author_sort Hu Z.; Liu Z.; Tay C.C.; Bao L.; Qiu M.
title Investigating the photocatalytic reduction of U(VI) over a single-atom Fe complex catalyst
title_short Investigating the photocatalytic reduction of U(VI) over a single-atom Fe complex catalyst
title_full Investigating the photocatalytic reduction of U(VI) over a single-atom Fe complex catalyst
title_fullStr Investigating the photocatalytic reduction of U(VI) over a single-atom Fe complex catalyst
title_full_unstemmed Investigating the photocatalytic reduction of U(VI) over a single-atom Fe complex catalyst
title_sort Investigating the photocatalytic reduction of U(VI) over a single-atom Fe complex catalyst
publishDate 2024
container_title Journal of Molecular Liquids
container_volume 411
container_issue
doi_str_mv 10.1016/j.molliq.2024.125774
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85201502899&doi=10.1016%2fj.molliq.2024.125774&partnerID=40&md5=206b2d4e92f643a8210083353b21bc6b
description 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 support (Fe-g-C3N4, Fe-N4 moiety), showing the ultrahigh photocatalytic performance towards over wide pH range of 3.0–8.0, outer-performing pristine g-C3N4 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 and Fe2+. According to quenching experiments and EPR spectra, it is demonstrated that the superoxide (·O2–) radicals played an important role in the photoreduction of U(VI) on Fe-g-C3N4 rather than ·OH and 1O2 species. These findings are crucial for the actual application of single-atom photocatalyst in environmental remediation. © 2024 Elsevier B.V.
publisher Elsevier B.V.
issn 1677322
language English
format Article
accesstype
record_format scopus
collection Scopus
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