Preparation of NiS/ZnIn2S4 as a superior photocatalyst for hydrogen evolution under visible light irradiation
In this study, NiS/ZnIn2S4 nanocomposites were successfully prepared via a facile two-step hydrothermal process. The as-prepared samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and high-resolution transmission elec...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Beilstein-Institut
2013-12-01
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| Series: | Beilstein Journal of Nanotechnology |
| Subjects: | |
| Online Access: | https://doi.org/10.3762/bjnano.4.107 |
| _version_ | 1818928200343879680 |
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| author | Liang Wei Yongjuan Chen Jialin Zhao Zhaohui Li |
| author_facet | Liang Wei Yongjuan Chen Jialin Zhao Zhaohui Li |
| author_sort | Liang Wei |
| collection | DOAJ |
| description | In this study, NiS/ZnIn2S4 nanocomposites were successfully prepared via a facile two-step hydrothermal process. The as-prepared samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). Their photocatalytic performance for hydrogen evolution under visible light irradiation was also investigated. It was found that the photocatalytic hydrogen evolution activity over hexagonal ZnIn2S4 can be significantly increased by loading NiS as a co-catalyst. The formation of a good junction between ZnIn2S4 and NiS via the two step hydrothermal processes is beneficial for the directional migration of the photo-excited electrons from ZnIn2S4 to NiS. The highest photocatalytic hydrogen evolution rate (104.7 μmol/h), which is even higher than that over Pt/ZnIn2S4 nanocomposite (77.8 μmol/h), was observed over an optimum NiS loading amount of 0.5 wt %. This work demonstrates a high potential of the developing of environmental friendly, cheap noble-metal-free co-catalyst for semiconductor-based photocatalytic hydrogen evolution. |
| first_indexed | 2024-12-20T03:25:08Z |
| format | Article |
| id | doaj.art-0addcc1bcfb04dfeba59a406eb6446e0 |
| institution | Directory Open Access Journal |
| issn | 2190-4286 |
| language | English |
| last_indexed | 2024-12-20T03:25:08Z |
| publishDate | 2013-12-01 |
| publisher | Beilstein-Institut |
| record_format | Article |
| series | Beilstein Journal of Nanotechnology |
| spelling | doaj.art-0addcc1bcfb04dfeba59a406eb6446e02022-12-21T19:55:07ZengBeilstein-InstitutBeilstein Journal of Nanotechnology2190-42862013-12-014194995510.3762/bjnano.4.1072190-4286-4-107Preparation of NiS/ZnIn2S4 as a superior photocatalyst for hydrogen evolution under visible light irradiationLiang Wei0Yongjuan Chen1Jialin Zhao2Zhaohui Li3Research Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis–State Key Laboratory Breeding Base, Fuzhou University, Fuzhou 350002, P. R. ChinaResearch Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis–State Key Laboratory Breeding Base, Fuzhou University, Fuzhou 350002, P. R. ChinaResearch Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis–State Key Laboratory Breeding Base, Fuzhou University, Fuzhou 350002, P. R. ChinaResearch Institute of Photocatalysis, Fujian Provincial Key Laboratory of Photocatalysis–State Key Laboratory Breeding Base, Fuzhou University, Fuzhou 350002, P. R. ChinaIn this study, NiS/ZnIn2S4 nanocomposites were successfully prepared via a facile two-step hydrothermal process. The as-prepared samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). Their photocatalytic performance for hydrogen evolution under visible light irradiation was also investigated. It was found that the photocatalytic hydrogen evolution activity over hexagonal ZnIn2S4 can be significantly increased by loading NiS as a co-catalyst. The formation of a good junction between ZnIn2S4 and NiS via the two step hydrothermal processes is beneficial for the directional migration of the photo-excited electrons from ZnIn2S4 to NiS. The highest photocatalytic hydrogen evolution rate (104.7 μmol/h), which is even higher than that over Pt/ZnIn2S4 nanocomposite (77.8 μmol/h), was observed over an optimum NiS loading amount of 0.5 wt %. This work demonstrates a high potential of the developing of environmental friendly, cheap noble-metal-free co-catalyst for semiconductor-based photocatalytic hydrogen evolution.https://doi.org/10.3762/bjnano.4.107co-catalysthydrogen evolutionNiSphotocatalyticphotocatalysisvisible light |
| spellingShingle | Liang Wei Yongjuan Chen Jialin Zhao Zhaohui Li Preparation of NiS/ZnIn2S4 as a superior photocatalyst for hydrogen evolution under visible light irradiation Beilstein Journal of Nanotechnology co-catalyst hydrogen evolution NiS photocatalytic photocatalysis visible light |
| title | Preparation of NiS/ZnIn2S4 as a superior photocatalyst for hydrogen evolution under visible light irradiation |
| title_full | Preparation of NiS/ZnIn2S4 as a superior photocatalyst for hydrogen evolution under visible light irradiation |
| title_fullStr | Preparation of NiS/ZnIn2S4 as a superior photocatalyst for hydrogen evolution under visible light irradiation |
| title_full_unstemmed | Preparation of NiS/ZnIn2S4 as a superior photocatalyst for hydrogen evolution under visible light irradiation |
| title_short | Preparation of NiS/ZnIn2S4 as a superior photocatalyst for hydrogen evolution under visible light irradiation |
| title_sort | preparation of nis znin2s4 as a superior photocatalyst for hydrogen evolution under visible light irradiation |
| topic | co-catalyst hydrogen evolution NiS photocatalytic photocatalysis visible light |
| url | https://doi.org/10.3762/bjnano.4.107 |
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