Natural Wollastonite-Derived Two-Dimensional Nanosheet Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> as a Novel Carrier of CdS for Efficient Photocatalytic H<sub>2</sub> Generation
Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> rods (NS) were synthesized via a hydrothermal method, employing natural wollastonite as a template. The hierarchical Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>...
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MDPI AG
2024-03-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/14/3/183 |
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| author | Jiarong Ma Run Zhou Yu Tu Ruixin Ma Daimei Chen Hao Ding |
| author_facet | Jiarong Ma Run Zhou Yu Tu Ruixin Ma Daimei Chen Hao Ding |
| author_sort | Jiarong Ma |
| collection | DOAJ |
| description | Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> rods (NS) were synthesized via a hydrothermal method, employing natural wollastonite as a template. The hierarchical Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> rods exhibited vertically oriented nanosheets, resulting in a substantial increase in the specific surface area (from 2.24 m<sup>2</sup>/g to 178.4 m<sup>2</sup>/g). Subsequently, a CdS/Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> composite photocatalyst (CdS/NS) was prepared using a chemical deposition method. CdS was uniformly loaded onto the surface of the Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> nanosheets, successfully forming a heterojunction with Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub>. The CdS/NS photocatalyst in the presence of lactic acid as a sacrificial agent demonstrated an impressive H<sub>2</sub> production rate of 4.05 mmol h<sup>−1</sup> g<sup>−1</sup>, around 40 times higher than pure CdS. The photocorrosion of CdS was effectively solved after loading. After four cycles, the performance of CdS/NS remained stable, showing the potential for sustainable applications. After photoexcitation, electrons moved from Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> to the valence band of CdS, where they interacted with the holes via an enhanced interface contact. Simultaneously, electrons in CdS transitioned to its conduction band, facilitating hydrogenation. The enhanced performance was attributed to the improved CdS dispersion by Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> loading and efficient photogenerated carrier separation through the heterojunction formation. This work provides new perspectives for broadening the applications of mineral materials and developing heterojunction photocatalysts with good dispersibility and recyclability. |
| first_indexed | 2024-04-24T18:27:07Z |
| format | Article |
| id | doaj.art-a0d8d84a36604f4b9e40fd4a78b32765 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-04-24T18:27:07Z |
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| spelling | doaj.art-a0d8d84a36604f4b9e40fd4a78b327652024-03-27T13:30:22ZengMDPI AGCatalysts2073-43442024-03-0114318310.3390/catal14030183Natural Wollastonite-Derived Two-Dimensional Nanosheet Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> as a Novel Carrier of CdS for Efficient Photocatalytic H<sub>2</sub> GenerationJiarong Ma0Run Zhou1Yu Tu2Ruixin Ma3Daimei Chen4Hao Ding5Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Xueyuan Road, Haidian District, Beijing 100083, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Xueyuan Road, Haidian District, Beijing 100083, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Xueyuan Road, Haidian District, Beijing 100083, ChinaSchool of Chemical and Environmental Engineering, North China Institute of Science and Technology, Langfang 065201, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Xueyuan Road, Haidian District, Beijing 100083, ChinaBeijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Xueyuan Road, Haidian District, Beijing 100083, ChinaNi<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> rods (NS) were synthesized via a hydrothermal method, employing natural wollastonite as a template. The hierarchical Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> rods exhibited vertically oriented nanosheets, resulting in a substantial increase in the specific surface area (from 2.24 m<sup>2</sup>/g to 178.4 m<sup>2</sup>/g). Subsequently, a CdS/Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> composite photocatalyst (CdS/NS) was prepared using a chemical deposition method. CdS was uniformly loaded onto the surface of the Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> nanosheets, successfully forming a heterojunction with Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub>. The CdS/NS photocatalyst in the presence of lactic acid as a sacrificial agent demonstrated an impressive H<sub>2</sub> production rate of 4.05 mmol h<sup>−1</sup> g<sup>−1</sup>, around 40 times higher than pure CdS. The photocorrosion of CdS was effectively solved after loading. After four cycles, the performance of CdS/NS remained stable, showing the potential for sustainable applications. After photoexcitation, electrons moved from Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> to the valence band of CdS, where they interacted with the holes via an enhanced interface contact. Simultaneously, electrons in CdS transitioned to its conduction band, facilitating hydrogenation. The enhanced performance was attributed to the improved CdS dispersion by Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> loading and efficient photogenerated carrier separation through the heterojunction formation. This work provides new perspectives for broadening the applications of mineral materials and developing heterojunction photocatalysts with good dispersibility and recyclability.https://www.mdpi.com/2073-4344/14/3/183Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub>wollastoniteCdSphotocatalytic H<sub>2</sub> production |
| spellingShingle | Jiarong Ma Run Zhou Yu Tu Ruixin Ma Daimei Chen Hao Ding Natural Wollastonite-Derived Two-Dimensional Nanosheet Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> as a Novel Carrier of CdS for Efficient Photocatalytic H<sub>2</sub> Generation Catalysts Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> wollastonite CdS photocatalytic H<sub>2</sub> production |
| title | Natural Wollastonite-Derived Two-Dimensional Nanosheet Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> as a Novel Carrier of CdS for Efficient Photocatalytic H<sub>2</sub> Generation |
| title_full | Natural Wollastonite-Derived Two-Dimensional Nanosheet Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> as a Novel Carrier of CdS for Efficient Photocatalytic H<sub>2</sub> Generation |
| title_fullStr | Natural Wollastonite-Derived Two-Dimensional Nanosheet Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> as a Novel Carrier of CdS for Efficient Photocatalytic H<sub>2</sub> Generation |
| title_full_unstemmed | Natural Wollastonite-Derived Two-Dimensional Nanosheet Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> as a Novel Carrier of CdS for Efficient Photocatalytic H<sub>2</sub> Generation |
| title_short | Natural Wollastonite-Derived Two-Dimensional Nanosheet Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> as a Novel Carrier of CdS for Efficient Photocatalytic H<sub>2</sub> Generation |
| title_sort | natural wollastonite derived two dimensional nanosheet ni sub 3 sub si sub 2 sub o sub 5 sub oh sub 4 sub as a novel carrier of cds for efficient photocatalytic h sub 2 sub generation |
| topic | Ni<sub>3</sub>Si<sub>2</sub>O<sub>5</sub>(OH)<sub>4</sub> wollastonite CdS photocatalytic H<sub>2</sub> production |
| url | https://www.mdpi.com/2073-4344/14/3/183 |
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