MoS2-coated microspheres of self-sensitized carbon nitride for efficient photocatalytic hydrogen generation under visible light irradiation
We have successfully coated the self-sensitized carbon nitride (SSCN) microspheres with a layer of MoS2 through a facile one-pot hydrothermal method by using (NH4)2MoS4 as the precursor. The resulted MoS2-coated SSCN photocatalyst appears as a core-shell structure and exhibits enhanced visible-light...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | English |
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2017
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| Online Access: | https://hdl.handle.net/10356/86681 http://hdl.handle.net/10220/44118 |
| _version_ | 1811685285913690112 |
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| author | Gao, Ziwei Xue, Can Gu, Quan Sun, Huaming Xie, Zunyuan |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Gao, Ziwei Xue, Can Gu, Quan Sun, Huaming Xie, Zunyuan |
| author_sort | Gao, Ziwei |
| collection | NTU |
| description | We have successfully coated the self-sensitized carbon nitride (SSCN) microspheres with a layer of MoS2 through a facile one-pot hydrothermal method by using (NH4)2MoS4 as the precursor. The resulted MoS2-coated SSCN photocatalyst appears as a core-shell structure and exhibits enhanced visible-light activities for photocatalytic H2 generation as compared to the un-coated SSCN and the standard g-C3N4 reference with MoS2 coating. The photocatalytic test results suggest that the oligomeric s-triazine dyes on the SSCN surface can provide additional light-harvesting capability and photogenerated charge carriers, and the coated MoS2 layer can serve as active sites for proton reduction towards H2 evolution. This synergistic effect of surface triazine dyes and MoS2 coating greatly promotes the activity of carbon nitride microspheres for vishible-light-driven H2 generation. This work provides a new way of future development of low-cost noble-metal-free photocatalysts for efficient solar-driven hydrogen production. |
| first_indexed | 2024-10-01T04:42:06Z |
| format | Journal Article |
| id | ntu-10356/86681 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:42:06Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/866812023-07-14T15:45:09Z MoS2-coated microspheres of self-sensitized carbon nitride for efficient photocatalytic hydrogen generation under visible light irradiation Gao, Ziwei Xue, Can Gu, Quan Sun, Huaming Xie, Zunyuan School of Materials Science & Engineering Graphitic Carbon Nitride Molybdenum Disulfide We have successfully coated the self-sensitized carbon nitride (SSCN) microspheres with a layer of MoS2 through a facile one-pot hydrothermal method by using (NH4)2MoS4 as the precursor. The resulted MoS2-coated SSCN photocatalyst appears as a core-shell structure and exhibits enhanced visible-light activities for photocatalytic H2 generation as compared to the un-coated SSCN and the standard g-C3N4 reference with MoS2 coating. The photocatalytic test results suggest that the oligomeric s-triazine dyes on the SSCN surface can provide additional light-harvesting capability and photogenerated charge carriers, and the coated MoS2 layer can serve as active sites for proton reduction towards H2 evolution. This synergistic effect of surface triazine dyes and MoS2 coating greatly promotes the activity of carbon nitride microspheres for vishible-light-driven H2 generation. This work provides a new way of future development of low-cost noble-metal-free photocatalysts for efficient solar-driven hydrogen production. MOE (Min. of Education, S’pore) Accepted version 2017-12-12T02:37:49Z 2019-12-06T16:27:12Z 2017-12-12T02:37:49Z 2019-12-06T16:27:12Z 2017 Journal Article Gu, Q., Sun, H., Xie, Z., Gao, Z., & Xue, C. (2017). MoS2-coated microspheres of self-sensitized carbon nitride for efficient photocatalytic hydrogen generation under visible light irradiation. Applied Surface Science, 396, 1808-1815. 0169-4332 https://hdl.handle.net/10356/86681 http://hdl.handle.net/10220/44118 10.1016/j.apsusc.2016.11.206 en Applied Surface Science © 2016 Elsevier B.V. This is the author created version of a work that has been peer reviewed and accepted for publication by Applied Surface Science, Elsevier B.V. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.apsusc.2016.11.206]. 28 p. application/pdf |
| spellingShingle | Graphitic Carbon Nitride Molybdenum Disulfide Gao, Ziwei Xue, Can Gu, Quan Sun, Huaming Xie, Zunyuan MoS2-coated microspheres of self-sensitized carbon nitride for efficient photocatalytic hydrogen generation under visible light irradiation |
| title | MoS2-coated microspheres of self-sensitized carbon nitride for efficient photocatalytic hydrogen generation under visible light irradiation |
| title_full | MoS2-coated microspheres of self-sensitized carbon nitride for efficient photocatalytic hydrogen generation under visible light irradiation |
| title_fullStr | MoS2-coated microspheres of self-sensitized carbon nitride for efficient photocatalytic hydrogen generation under visible light irradiation |
| title_full_unstemmed | MoS2-coated microspheres of self-sensitized carbon nitride for efficient photocatalytic hydrogen generation under visible light irradiation |
| title_short | MoS2-coated microspheres of self-sensitized carbon nitride for efficient photocatalytic hydrogen generation under visible light irradiation |
| title_sort | mos2 coated microspheres of self sensitized carbon nitride for efficient photocatalytic hydrogen generation under visible light irradiation |
| topic | Graphitic Carbon Nitride Molybdenum Disulfide |
| url | https://hdl.handle.net/10356/86681 http://hdl.handle.net/10220/44118 |
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