Efficient and Stable Catalytic Hydrogen Evolution of ZrO<sub>2</sub>/CdSe-DETA Nanocomposites under Visible Light
Composite photocatalysts are crucial for photocatalytic hydrogen evolution. In this work, ZrO<sub>2</sub>/CdSe-diethylenetriamine (ZrO<sub>2</sub>/CdSe-DETA) heterojunction nanocomposites are synthesized, and efficiently and stably catalyzed hydrogen evolution under visible l...
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MDPI AG
2022-11-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/12/11/1385 |
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| author | Zhen Li Ligong Zhai Tingting Ma Jinfeng Zhang Zhenghua Wang |
| author_facet | Zhen Li Ligong Zhai Tingting Ma Jinfeng Zhang Zhenghua Wang |
| author_sort | Zhen Li |
| collection | DOAJ |
| description | Composite photocatalysts are crucial for photocatalytic hydrogen evolution. In this work, ZrO<sub>2</sub>/CdSe-diethylenetriamine (ZrO<sub>2</sub>/CdSe-DETA) heterojunction nanocomposites are synthesized, and efficiently and stably catalyzed hydrogen evolution under visible light. X-ray photoelectron spectroscopy (XPS) and high resolution transmission electron microscope (HRTEM) confirm the formation of heterojunctions between ZrO<sub>2</sub> (ZO) and CdSe-DETA (CS). Ultraviolet–visible spectroscopy diffuse reflectance spectra (UV-vis DRS), Mott–Schottky, and theoretical calculations confirm that the mechanism at the heterojunction of the ZrO<sub>2</sub>/CdSe-DETA (ZO/CS) nanocomposites is Type-I. Among the ZO/CS nanocomposites (ZO/CS-0.4, ZO/CS-0.6, and ZO/CS-0.8; in the nanocomposites, the mass ratio of ZO to CS is 0.1:0.0765, 0.1:0.1148, and 0.1:0.1531, respectively). ZO/CS-0.6 nanocomposite has the best photocatalytic hydrogen evolution activity (4.27 mmol g<sup>−1</sup> h<sup>−1</sup>), which is significantly higher than ZO (trace) and CS (1.75 mmol g<sup>−1</sup> h<sup>−1</sup>). Within four cycles, the ZO/CS-0.6 nanocomposite maintains an efficient catalytic hydrogen evolution rate. Due to the existence of the heterojunction of the composites, the photogenerated electron-hole pairs can be effectively separated, which accelerates the photocatalytic hydrogen evolution reaction and reduces the progress of photocorrosion. This work reveals the feasibility of ZO/CS nanocomposite photocatalysts for hydrogen evolution. |
| first_indexed | 2024-03-09T19:12:46Z |
| format | Article |
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| language | English |
| last_indexed | 2024-03-09T19:12:46Z |
| publishDate | 2022-11-01 |
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| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-f085a5672d3045299fe81caf22efb6672023-11-24T04:06:36ZengMDPI AGCatalysts2073-43442022-11-011211138510.3390/catal12111385Efficient and Stable Catalytic Hydrogen Evolution of ZrO<sub>2</sub>/CdSe-DETA Nanocomposites under Visible LightZhen Li0Ligong Zhai1Tingting Ma2Jinfeng Zhang3Zhenghua Wang4School of Food Engineering, Anhui Science and Technology University, Fengyang 233100, ChinaSchool of Food Engineering, Anhui Science and Technology University, Fengyang 233100, ChinaKey Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, ChinaAnhui Province Key Laboratory of Pollutant Sensitive Materials and Environmental Remediation, School of Physics and Electronic Information, Huaibei Normal University, Huaibei 235000, ChinaKey Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, ChinaComposite photocatalysts are crucial for photocatalytic hydrogen evolution. In this work, ZrO<sub>2</sub>/CdSe-diethylenetriamine (ZrO<sub>2</sub>/CdSe-DETA) heterojunction nanocomposites are synthesized, and efficiently and stably catalyzed hydrogen evolution under visible light. X-ray photoelectron spectroscopy (XPS) and high resolution transmission electron microscope (HRTEM) confirm the formation of heterojunctions between ZrO<sub>2</sub> (ZO) and CdSe-DETA (CS). Ultraviolet–visible spectroscopy diffuse reflectance spectra (UV-vis DRS), Mott–Schottky, and theoretical calculations confirm that the mechanism at the heterojunction of the ZrO<sub>2</sub>/CdSe-DETA (ZO/CS) nanocomposites is Type-I. Among the ZO/CS nanocomposites (ZO/CS-0.4, ZO/CS-0.6, and ZO/CS-0.8; in the nanocomposites, the mass ratio of ZO to CS is 0.1:0.0765, 0.1:0.1148, and 0.1:0.1531, respectively). ZO/CS-0.6 nanocomposite has the best photocatalytic hydrogen evolution activity (4.27 mmol g<sup>−1</sup> h<sup>−1</sup>), which is significantly higher than ZO (trace) and CS (1.75 mmol g<sup>−1</sup> h<sup>−1</sup>). Within four cycles, the ZO/CS-0.6 nanocomposite maintains an efficient catalytic hydrogen evolution rate. Due to the existence of the heterojunction of the composites, the photogenerated electron-hole pairs can be effectively separated, which accelerates the photocatalytic hydrogen evolution reaction and reduces the progress of photocorrosion. This work reveals the feasibility of ZO/CS nanocomposite photocatalysts for hydrogen evolution.https://www.mdpi.com/2073-4344/12/11/1385photocatalystsstablynanocompositesphotogenerated electron-hole pairshydrogen |
| spellingShingle | Zhen Li Ligong Zhai Tingting Ma Jinfeng Zhang Zhenghua Wang Efficient and Stable Catalytic Hydrogen Evolution of ZrO<sub>2</sub>/CdSe-DETA Nanocomposites under Visible Light Catalysts photocatalysts stably nanocomposites photogenerated electron-hole pairs hydrogen |
| title | Efficient and Stable Catalytic Hydrogen Evolution of ZrO<sub>2</sub>/CdSe-DETA Nanocomposites under Visible Light |
| title_full | Efficient and Stable Catalytic Hydrogen Evolution of ZrO<sub>2</sub>/CdSe-DETA Nanocomposites under Visible Light |
| title_fullStr | Efficient and Stable Catalytic Hydrogen Evolution of ZrO<sub>2</sub>/CdSe-DETA Nanocomposites under Visible Light |
| title_full_unstemmed | Efficient and Stable Catalytic Hydrogen Evolution of ZrO<sub>2</sub>/CdSe-DETA Nanocomposites under Visible Light |
| title_short | Efficient and Stable Catalytic Hydrogen Evolution of ZrO<sub>2</sub>/CdSe-DETA Nanocomposites under Visible Light |
| title_sort | efficient and stable catalytic hydrogen evolution of zro sub 2 sub cdse deta nanocomposites under visible light |
| topic | photocatalysts stably nanocomposites photogenerated electron-hole pairs hydrogen |
| url | https://www.mdpi.com/2073-4344/12/11/1385 |
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