Construction of Chemically Bonded Interface of Organic/Inorganic g-C<sub>3</sub>N<sub>4</sub>/LDH Heterojunction for Z-Schematic Photocatalytic H<sub>2</sub> 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<sub>3&l...
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MDPI AG
2021-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/10/2762 |
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| author | Yuzhou Xia Ruowen Liang Min-Quan Yang Shuying Zhu Guiyang Yan |
| author_facet | Yuzhou Xia Ruowen Liang Min-Quan Yang Shuying Zhu Guiyang Yan |
| author_sort | Yuzhou Xia |
| collection | DOAJ |
| 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<sub>3</sub>N<sub>4</sub>/LDH heterojunction by in situ growing of inorganic CoAl-LDH firmly on organic g-C<sub>3</sub>N<sub>4</sub> nanosheet (NS). Benefiting from the two-dimensional (2D) morphology and the surface exposed pyridine-like nitrogen atoms, the g-C<sub>3</sub>N<sub>4</sub> NS offers efficient trap sits to capture transition metal ions. As such, CoAl-LDH NS can be tightly attached onto the g-C<sub>3</sub>N<sub>4</sub> NS, forming a strong interaction between CoAl-LDH and g-C<sub>3</sub>N<sub>4</sub> 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<sub>2</sub> evolution activity, as well as considerable stability. Under visible light irradiation of 4 h, the optimal H<sub>2</sub> evolution rate reaches 1952.9 μmol g<sup>−1</sup>, which is 8.4 times of the bare g-C<sub>3</sub>N<sub>4</sub> 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. |
| first_indexed | 2024-03-10T06:19:21Z |
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| language | English |
| last_indexed | 2024-03-10T06:19:21Z |
| publishDate | 2021-10-01 |
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| series | Nanomaterials |
| spelling | doaj.art-936a45307fda4c929d493e413ac72ada2023-11-22T19:26:16ZengMDPI AGNanomaterials2079-49912021-10-011110276210.3390/nano11102762Construction of Chemically Bonded Interface of Organic/Inorganic g-C<sub>3</sub>N<sub>4</sub>/LDH Heterojunction for Z-Schematic Photocatalytic H<sub>2</sub> GenerationYuzhou Xia0Ruowen Liang1Min-Quan Yang2Shuying Zhu3Guiyang Yan4Fujian Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, ChinaFujian Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, ChinaFujian Key Laboratory of Pollution Control & Resource Reuse, College of Environmental Science and Engineering, Fujian Normal University, Fuzhou 350007, ChinaCollege of Chemistry, Fuzhou University, Fuzhou 350116, ChinaFujian Province University Key Laboratory of Green Energy and Environment Catalysis, Ningde Normal University, Ningde 352100, ChinaThe 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<sub>3</sub>N<sub>4</sub>/LDH heterojunction by in situ growing of inorganic CoAl-LDH firmly on organic g-C<sub>3</sub>N<sub>4</sub> nanosheet (NS). Benefiting from the two-dimensional (2D) morphology and the surface exposed pyridine-like nitrogen atoms, the g-C<sub>3</sub>N<sub>4</sub> NS offers efficient trap sits to capture transition metal ions. As such, CoAl-LDH NS can be tightly attached onto the g-C<sub>3</sub>N<sub>4</sub> NS, forming a strong interaction between CoAl-LDH and g-C<sub>3</sub>N<sub>4</sub> 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<sub>2</sub> evolution activity, as well as considerable stability. Under visible light irradiation of 4 h, the optimal H<sub>2</sub> evolution rate reaches 1952.9 μmol g<sup>−1</sup>, which is 8.4 times of the bare g-C<sub>3</sub>N<sub>4</sub> 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.https://www.mdpi.com/2079-4991/11/10/2762chemically bonded interfaceheterojunctionZ-schemeg-C<sub>3</sub>N<sub>4</sub>/LDHphotocatalytic |
| spellingShingle | Yuzhou Xia Ruowen Liang Min-Quan Yang Shuying Zhu Guiyang Yan Construction of Chemically Bonded Interface of Organic/Inorganic g-C<sub>3</sub>N<sub>4</sub>/LDH Heterojunction for Z-Schematic Photocatalytic H<sub>2</sub> Generation Nanomaterials chemically bonded interface heterojunction Z-scheme g-C<sub>3</sub>N<sub>4</sub>/LDH photocatalytic |
| title | Construction of Chemically Bonded Interface of Organic/Inorganic g-C<sub>3</sub>N<sub>4</sub>/LDH Heterojunction for Z-Schematic Photocatalytic H<sub>2</sub> Generation |
| title_full | Construction of Chemically Bonded Interface of Organic/Inorganic g-C<sub>3</sub>N<sub>4</sub>/LDH Heterojunction for Z-Schematic Photocatalytic H<sub>2</sub> Generation |
| title_fullStr | Construction of Chemically Bonded Interface of Organic/Inorganic g-C<sub>3</sub>N<sub>4</sub>/LDH Heterojunction for Z-Schematic Photocatalytic H<sub>2</sub> Generation |
| title_full_unstemmed | Construction of Chemically Bonded Interface of Organic/Inorganic g-C<sub>3</sub>N<sub>4</sub>/LDH Heterojunction for Z-Schematic Photocatalytic H<sub>2</sub> Generation |
| title_short | Construction of Chemically Bonded Interface of Organic/Inorganic g-C<sub>3</sub>N<sub>4</sub>/LDH Heterojunction for Z-Schematic Photocatalytic H<sub>2</sub> Generation |
| title_sort | construction of chemically bonded interface of organic inorganic g c sub 3 sub n sub 4 sub ldh heterojunction for z schematic photocatalytic h sub 2 sub generation |
| topic | chemically bonded interface heterojunction Z-scheme g-C<sub>3</sub>N<sub>4</sub>/LDH photocatalytic |
| url | https://www.mdpi.com/2079-4991/11/10/2762 |
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