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Construction of Chemically Bonded Interface of Organic/Inorganic g-C(3)N(4)/LDH Heterojunction for Z-Schematic Photocatalytic H(2) Generation

The design and synthesis of a Z-schematic photocatalytic heterostructure with an intimate interface is of great significance for the migration and separation of photogenerated charge carriers, but still remains a challenge. Here, we developed an efficient Z-scheme organic/inorganic g-C(3)N(4)/LDH he...

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Autores principales: Xia, Yuzhou, Liang, Ruowen, Yang, Min-Quan, Zhu, Shuying, Yan, Guiyang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8539041/
https://www.ncbi.nlm.nih.gov/pubmed/34685202
http://dx.doi.org/10.3390/nano11102762
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author Xia, Yuzhou
Liang, Ruowen
Yang, Min-Quan
Zhu, Shuying
Yan, Guiyang
author_facet Xia, Yuzhou
Liang, Ruowen
Yang, Min-Quan
Zhu, Shuying
Yan, Guiyang
author_sort Xia, Yuzhou
collection PubMed
description The design and synthesis of a Z-schematic photocatalytic heterostructure with an intimate interface is of great significance for the migration and separation of photogenerated charge carriers, but still remains a challenge. Here, we developed an efficient Z-scheme organic/inorganic g-C(3)N(4)/LDH heterojunction by in situ growing of inorganic CoAl-LDH firmly on organic g-C(3)N(4) nanosheet (NS). Benefiting from the two-dimensional (2D) morphology and the surface exposed pyridine-like nitrogen atoms, the g-C(3)N(4) NS offers efficient trap sits to capture transition metal ions. As such, CoAl-LDH NS can be tightly attached onto the g-C(3)N(4) NS, forming a strong interaction between CoAl-LDH and g-C(3)N(4) via nitrogen–metal bonds. Moreover, the 2D/2D interface provides a high-speed channel for the interfacial charge transfer. As a result, the prepared heterojunction composite exhibits a greatly improved photocatalytic H(2) evolution activity, as well as considerable stability. Under visible light irradiation of 4 h, the optimal H(2) evolution rate reaches 1952.9 μmol g(−1), which is 8.4 times of the bare g-C(3)N(4) NS. The in situ construction of organic/inorganic heterojunction with a chemical-bonded interface may provide guidance for the designing of high-performance heterostructure photocatalysts.
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spelling pubmed-85390412021-10-24 Construction of Chemically Bonded Interface of Organic/Inorganic g-C(3)N(4)/LDH Heterojunction for Z-Schematic Photocatalytic H(2) Generation Xia, Yuzhou Liang, Ruowen Yang, Min-Quan Zhu, Shuying Yan, Guiyang Nanomaterials (Basel) Article The design and synthesis of a Z-schematic photocatalytic heterostructure with an intimate interface is of great significance for the migration and separation of photogenerated charge carriers, but still remains a challenge. Here, we developed an efficient Z-scheme organic/inorganic g-C(3)N(4)/LDH heterojunction by in situ growing of inorganic CoAl-LDH firmly on organic g-C(3)N(4) nanosheet (NS). Benefiting from the two-dimensional (2D) morphology and the surface exposed pyridine-like nitrogen atoms, the g-C(3)N(4) NS offers efficient trap sits to capture transition metal ions. As such, CoAl-LDH NS can be tightly attached onto the g-C(3)N(4) NS, forming a strong interaction between CoAl-LDH and g-C(3)N(4) via nitrogen–metal bonds. Moreover, the 2D/2D interface provides a high-speed channel for the interfacial charge transfer. As a result, the prepared heterojunction composite exhibits a greatly improved photocatalytic H(2) evolution activity, as well as considerable stability. Under visible light irradiation of 4 h, the optimal H(2) evolution rate reaches 1952.9 μmol g(−1), which is 8.4 times of the bare g-C(3)N(4) NS. The in situ construction of organic/inorganic heterojunction with a chemical-bonded interface may provide guidance for the designing of high-performance heterostructure photocatalysts. MDPI 2021-10-18 /pmc/articles/PMC8539041/ /pubmed/34685202 http://dx.doi.org/10.3390/nano11102762 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Xia, Yuzhou
Liang, Ruowen
Yang, Min-Quan
Zhu, Shuying
Yan, Guiyang
Construction of Chemically Bonded Interface of Organic/Inorganic g-C(3)N(4)/LDH Heterojunction for Z-Schematic Photocatalytic H(2) Generation
title Construction of Chemically Bonded Interface of Organic/Inorganic g-C(3)N(4)/LDH Heterojunction for Z-Schematic Photocatalytic H(2) Generation
title_full Construction of Chemically Bonded Interface of Organic/Inorganic g-C(3)N(4)/LDH Heterojunction for Z-Schematic Photocatalytic H(2) Generation
title_fullStr Construction of Chemically Bonded Interface of Organic/Inorganic g-C(3)N(4)/LDH Heterojunction for Z-Schematic Photocatalytic H(2) Generation
title_full_unstemmed Construction of Chemically Bonded Interface of Organic/Inorganic g-C(3)N(4)/LDH Heterojunction for Z-Schematic Photocatalytic H(2) Generation
title_short Construction of Chemically Bonded Interface of Organic/Inorganic g-C(3)N(4)/LDH Heterojunction for Z-Schematic Photocatalytic H(2) Generation
title_sort construction of chemically bonded interface of organic/inorganic g-c(3)n(4)/ldh heterojunction for z-schematic photocatalytic h(2) generation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8539041/
https://www.ncbi.nlm.nih.gov/pubmed/34685202
http://dx.doi.org/10.3390/nano11102762
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