Cargando…

Ag(2)NCN anchored on Ti(3)C(2)T(x) MXene as a Schottky heterojunction: enhanced visible light photocatalytic efficiency of rhodamine B degradation

The quick charge recombination of light-generated electrons and holes severely restricts the photocatalytic applications of single semiconductors. Here, a straightforward electrostatically driven self-assembly technique was used to construct an Ag(2)NCN/Ti(3)C(2)T(x) Schottky heterojunction, which w...

Descripción completa

Detalles Bibliográficos
Autores principales: Yu, Haidong, Jiang, Haibing, Cao, Xuan, Yao, Shuhua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10251192/
https://www.ncbi.nlm.nih.gov/pubmed/37305443
http://dx.doi.org/10.1039/d3ra01776a
_version_ 1785055896194252800
author Yu, Haidong
Jiang, Haibing
Cao, Xuan
Yao, Shuhua
author_facet Yu, Haidong
Jiang, Haibing
Cao, Xuan
Yao, Shuhua
author_sort Yu, Haidong
collection PubMed
description The quick charge recombination of light-generated electrons and holes severely restricts the photocatalytic applications of single semiconductors. Here, a straightforward electrostatically driven self-assembly technique was used to construct an Ag(2)NCN/Ti(3)C(2)T(x) Schottky heterojunction, which was then used to degrade Rhodamine B (RhB) in the illumination of visible light. The findings from the experiments revealed that as a cocatalyst, Ti(3)C(2)T(x) significantly suppresses the recombination rate and broadens visible absorptivity to improve Ag(2)NCN photocatalytic efficiency. The optimized Ag(2)NCN/Ti(3)C(2)T(x) (AT2) composite exhibited an outstanding photocatalytic rate in 96 min, with the highest RhB degradation rate (k = 0.029 min(−1)), which was around fifteen times that of pure Ag(2)NCN (k = 0.002 min(−1)). Furthermore, the trapping-agent experiment showed photogenerated superoxide radicals and holes were the principal active agents inside the photodegradation of RhB. Compared with Ag-based semiconductors, the composite exhibited outstanding photostability, highlighting its excellent potential for application in visible-light photocatalysis.
format Online
Article
Text
id pubmed-10251192
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher The Royal Society of Chemistry
record_format MEDLINE/PubMed
spelling pubmed-102511922023-06-10 Ag(2)NCN anchored on Ti(3)C(2)T(x) MXene as a Schottky heterojunction: enhanced visible light photocatalytic efficiency of rhodamine B degradation Yu, Haidong Jiang, Haibing Cao, Xuan Yao, Shuhua RSC Adv Chemistry The quick charge recombination of light-generated electrons and holes severely restricts the photocatalytic applications of single semiconductors. Here, a straightforward electrostatically driven self-assembly technique was used to construct an Ag(2)NCN/Ti(3)C(2)T(x) Schottky heterojunction, which was then used to degrade Rhodamine B (RhB) in the illumination of visible light. The findings from the experiments revealed that as a cocatalyst, Ti(3)C(2)T(x) significantly suppresses the recombination rate and broadens visible absorptivity to improve Ag(2)NCN photocatalytic efficiency. The optimized Ag(2)NCN/Ti(3)C(2)T(x) (AT2) composite exhibited an outstanding photocatalytic rate in 96 min, with the highest RhB degradation rate (k = 0.029 min(−1)), which was around fifteen times that of pure Ag(2)NCN (k = 0.002 min(−1)). Furthermore, the trapping-agent experiment showed photogenerated superoxide radicals and holes were the principal active agents inside the photodegradation of RhB. Compared with Ag-based semiconductors, the composite exhibited outstanding photostability, highlighting its excellent potential for application in visible-light photocatalysis. The Royal Society of Chemistry 2023-06-09 /pmc/articles/PMC10251192/ /pubmed/37305443 http://dx.doi.org/10.1039/d3ra01776a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Yu, Haidong
Jiang, Haibing
Cao, Xuan
Yao, Shuhua
Ag(2)NCN anchored on Ti(3)C(2)T(x) MXene as a Schottky heterojunction: enhanced visible light photocatalytic efficiency of rhodamine B degradation
title Ag(2)NCN anchored on Ti(3)C(2)T(x) MXene as a Schottky heterojunction: enhanced visible light photocatalytic efficiency of rhodamine B degradation
title_full Ag(2)NCN anchored on Ti(3)C(2)T(x) MXene as a Schottky heterojunction: enhanced visible light photocatalytic efficiency of rhodamine B degradation
title_fullStr Ag(2)NCN anchored on Ti(3)C(2)T(x) MXene as a Schottky heterojunction: enhanced visible light photocatalytic efficiency of rhodamine B degradation
title_full_unstemmed Ag(2)NCN anchored on Ti(3)C(2)T(x) MXene as a Schottky heterojunction: enhanced visible light photocatalytic efficiency of rhodamine B degradation
title_short Ag(2)NCN anchored on Ti(3)C(2)T(x) MXene as a Schottky heterojunction: enhanced visible light photocatalytic efficiency of rhodamine B degradation
title_sort ag(2)ncn anchored on ti(3)c(2)t(x) mxene as a schottky heterojunction: enhanced visible light photocatalytic efficiency of rhodamine b degradation
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10251192/
https://www.ncbi.nlm.nih.gov/pubmed/37305443
http://dx.doi.org/10.1039/d3ra01776a
work_keys_str_mv AT yuhaidong ag2ncnanchoredonti3c2txmxeneasaschottkyheterojunctionenhancedvisiblelightphotocatalyticefficiencyofrhodaminebdegradation
AT jianghaibing ag2ncnanchoredonti3c2txmxeneasaschottkyheterojunctionenhancedvisiblelightphotocatalyticefficiencyofrhodaminebdegradation
AT caoxuan ag2ncnanchoredonti3c2txmxeneasaschottkyheterojunctionenhancedvisiblelightphotocatalyticefficiencyofrhodaminebdegradation
AT yaoshuhua ag2ncnanchoredonti3c2txmxeneasaschottkyheterojunctionenhancedvisiblelightphotocatalyticefficiencyofrhodaminebdegradation