Enhanced Photocatalytic Hydrogen Evolution by Loading Cd0.5Zn0.5S QDs onto Ni2P Porous Nanosheets
Abstract Ni2P has been decorated on CdS nanowires or nanorods for efficient photocatalytic H2 production, whereas the specific surface area remains limited because of the large size. Here, the composites of Cd0.5Zn0.5S quantum dots (QDs) on thin Ni2P porous nanosheets with high specific surface area...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-02-01
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| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s11671-018-2438-0 |
| _version_ | 1797707080461713408 |
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| author | Lingfeng Xiao Tong Su Zhuo Wang Kun Zhang Xiaoniu Peng Yibo Han Quan Li Xina Wang |
| author_facet | Lingfeng Xiao Tong Su Zhuo Wang Kun Zhang Xiaoniu Peng Yibo Han Quan Li Xina Wang |
| author_sort | Lingfeng Xiao |
| collection | DOAJ |
| description | Abstract Ni2P has been decorated on CdS nanowires or nanorods for efficient photocatalytic H2 production, whereas the specific surface area remains limited because of the large size. Here, the composites of Cd0.5Zn0.5S quantum dots (QDs) on thin Ni2P porous nanosheets with high specific surface area were constructed for noble metal-free photocatalytic H2 generation. The porous Ni2P nanosheets, which were formed by the interconnection of 15–30 nm-sized Ni2P nanoparticles, allowed the uniform loading of 7 nm-sized Cd0.5Zn0.5S QDs and the loading density being controllable. By tuning the content of Ni2P, H2 generation rates of 43.3 μM h− 1 (1 mg photocatalyst) and 700 μM h− 1 (100 mg photocatalyst) and a solar to hydrogen efficiency of 1.5% were achieved for the Ni2P-Cd0.5Zn0.5S composites. The effect of Ni2P content on the light absorption, photoluminescence, and electrochemical property of the composite was systematically studied. Together with the band structure calculation based on density functional theory, the promotion of Ni2P in charge transfer and HER activity together with the shading effect on light absorption were revealed. Such a strategy can be applied to other photocatalysts toward efficient solar hydrogen generation. |
| first_indexed | 2024-03-12T06:02:08Z |
| format | Article |
| id | doaj.art-c645fb4ba81d4fc8b9623cf59f65a0cc |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T06:02:08Z |
| publishDate | 2018-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-c645fb4ba81d4fc8b9623cf59f65a0cc2023-09-03T04:07:06ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2018-02-011311910.1186/s11671-018-2438-0Enhanced Photocatalytic Hydrogen Evolution by Loading Cd0.5Zn0.5S QDs onto Ni2P Porous NanosheetsLingfeng Xiao0Tong Su1Zhuo Wang2Kun Zhang3Xiaoniu Peng4Yibo Han5Quan Li6Xina Wang7Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics and Electronic Science, Hubei UniversityHubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics and Electronic Science, Hubei UniversityState Center for Designer Low-Carbon and Environmental Materials, Zhengzhou UniversityWuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and TechnologyHubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics and Electronic Science, Hubei UniversityWuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and TechnologyDepartment of Physics, The Chinese University of Hong KongHubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics and Electronic Science, Hubei UniversityAbstract Ni2P has been decorated on CdS nanowires or nanorods for efficient photocatalytic H2 production, whereas the specific surface area remains limited because of the large size. Here, the composites of Cd0.5Zn0.5S quantum dots (QDs) on thin Ni2P porous nanosheets with high specific surface area were constructed for noble metal-free photocatalytic H2 generation. The porous Ni2P nanosheets, which were formed by the interconnection of 15–30 nm-sized Ni2P nanoparticles, allowed the uniform loading of 7 nm-sized Cd0.5Zn0.5S QDs and the loading density being controllable. By tuning the content of Ni2P, H2 generation rates of 43.3 μM h− 1 (1 mg photocatalyst) and 700 μM h− 1 (100 mg photocatalyst) and a solar to hydrogen efficiency of 1.5% were achieved for the Ni2P-Cd0.5Zn0.5S composites. The effect of Ni2P content on the light absorption, photoluminescence, and electrochemical property of the composite was systematically studied. Together with the band structure calculation based on density functional theory, the promotion of Ni2P in charge transfer and HER activity together with the shading effect on light absorption were revealed. Such a strategy can be applied to other photocatalysts toward efficient solar hydrogen generation.http://link.springer.com/article/10.1186/s11671-018-2438-0Ni2PCd0.5Zn0.5SNanosheetQuantum dotHydrogen evolution |
| spellingShingle | Lingfeng Xiao Tong Su Zhuo Wang Kun Zhang Xiaoniu Peng Yibo Han Quan Li Xina Wang Enhanced Photocatalytic Hydrogen Evolution by Loading Cd0.5Zn0.5S QDs onto Ni2P Porous Nanosheets Nanoscale Research Letters Ni2P Cd0.5Zn0.5S Nanosheet Quantum dot Hydrogen evolution |
| title | Enhanced Photocatalytic Hydrogen Evolution by Loading Cd0.5Zn0.5S QDs onto Ni2P Porous Nanosheets |
| title_full | Enhanced Photocatalytic Hydrogen Evolution by Loading Cd0.5Zn0.5S QDs onto Ni2P Porous Nanosheets |
| title_fullStr | Enhanced Photocatalytic Hydrogen Evolution by Loading Cd0.5Zn0.5S QDs onto Ni2P Porous Nanosheets |
| title_full_unstemmed | Enhanced Photocatalytic Hydrogen Evolution by Loading Cd0.5Zn0.5S QDs onto Ni2P Porous Nanosheets |
| title_short | Enhanced Photocatalytic Hydrogen Evolution by Loading Cd0.5Zn0.5S QDs onto Ni2P Porous Nanosheets |
| title_sort | enhanced photocatalytic hydrogen evolution by loading cd0 5zn0 5s qds onto ni2p porous nanosheets |
| topic | Ni2P Cd0.5Zn0.5S Nanosheet Quantum dot Hydrogen evolution |
| url | http://link.springer.com/article/10.1186/s11671-018-2438-0 |
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