Synthesis of nitrogen and sulfur co-doped reduced graphene oxide as efficient metal-free cocatalyst for the photo-activity enhancement of CdS
© 2018 Elsevier B.V. Nitrogen and sulfur co-doped reduced graphene oxide (NS-rGO) was synthesized using a facile low temperature calcination method, which was then used as support and cocatalyst for the anchor of CdS. The obtained CdS/NS-rGO nanocomposites exhibit ultra-high photocatalytic activity...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
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Elsevier BV
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/68878 |
| _version_ | 1848761912286773248 |
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| author | Han, W. Chen, L. Song, W. Wang, Shaobin Fan, X. Li, Y. Zhang, F. Zhang, G. Peng, W. |
| author_facet | Han, W. Chen, L. Song, W. Wang, Shaobin Fan, X. Li, Y. Zhang, F. Zhang, G. Peng, W. |
| author_sort | Han, W. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 2018 Elsevier B.V. Nitrogen and sulfur co-doped reduced graphene oxide (NS-rGO) was synthesized using a facile low temperature calcination method, which was then used as support and cocatalyst for the anchor of CdS. The obtained CdS/NS-rGO nanocomposites exhibit ultra-high photocatalytic activity for hydrogen evolution and 4-nitrophenol (4-NP) reduction under visible light (? = 420 nm). Their activity could also be adjusted by changing the doping amount of S and N, or by changing the ratios between CdS and NS-rGO. The optimum percentage of NS-rGO is 5 wt%, at which CdS/NS-rGO photocatalyst could achieve the highest H2evolution rate of 1701 µmol h–1g–1. Moreover, the reduction from 4-NP to 4-aminophenol (4-AP) could be completed within only 6 min over this optimized composite. NS-rGO here could provide more active sites as well as tune the band gap structure to increase the photo-activity. The density functional theory (DFT) calculations reveal that NS-rGO has a small Gibbs free energy for H* adsorption (?GH), which could increase the utilization efficency of photo-generated electrons for H2generation. NS-rGO is therefore an idea alternate cocatalyst of noble metals for new photocatalysts development. |
| first_indexed | 2025-11-14T10:39:12Z |
| format | Journal Article |
| id | curtin-20.500.11937-68878 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:39:12Z |
| publishDate | 2018 |
| publisher | Elsevier BV |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-688782018-06-29T12:35:26Z Synthesis of nitrogen and sulfur co-doped reduced graphene oxide as efficient metal-free cocatalyst for the photo-activity enhancement of CdS Han, W. Chen, L. Song, W. Wang, Shaobin Fan, X. Li, Y. Zhang, F. Zhang, G. Peng, W. © 2018 Elsevier B.V. Nitrogen and sulfur co-doped reduced graphene oxide (NS-rGO) was synthesized using a facile low temperature calcination method, which was then used as support and cocatalyst for the anchor of CdS. The obtained CdS/NS-rGO nanocomposites exhibit ultra-high photocatalytic activity for hydrogen evolution and 4-nitrophenol (4-NP) reduction under visible light (? = 420 nm). Their activity could also be adjusted by changing the doping amount of S and N, or by changing the ratios between CdS and NS-rGO. The optimum percentage of NS-rGO is 5 wt%, at which CdS/NS-rGO photocatalyst could achieve the highest H2evolution rate of 1701 µmol h–1g–1. Moreover, the reduction from 4-NP to 4-aminophenol (4-AP) could be completed within only 6 min over this optimized composite. NS-rGO here could provide more active sites as well as tune the band gap structure to increase the photo-activity. The density functional theory (DFT) calculations reveal that NS-rGO has a small Gibbs free energy for H* adsorption (?GH), which could increase the utilization efficency of photo-generated electrons for H2generation. NS-rGO is therefore an idea alternate cocatalyst of noble metals for new photocatalysts development. 2018 Journal Article http://hdl.handle.net/20.500.11937/68878 10.1016/j.apcatb.2018.05.021 Elsevier BV restricted |
| spellingShingle | Han, W. Chen, L. Song, W. Wang, Shaobin Fan, X. Li, Y. Zhang, F. Zhang, G. Peng, W. Synthesis of nitrogen and sulfur co-doped reduced graphene oxide as efficient metal-free cocatalyst for the photo-activity enhancement of CdS |
| title | Synthesis of nitrogen and sulfur co-doped reduced graphene oxide as efficient metal-free cocatalyst for the photo-activity enhancement of CdS |
| title_full | Synthesis of nitrogen and sulfur co-doped reduced graphene oxide as efficient metal-free cocatalyst for the photo-activity enhancement of CdS |
| title_fullStr | Synthesis of nitrogen and sulfur co-doped reduced graphene oxide as efficient metal-free cocatalyst for the photo-activity enhancement of CdS |
| title_full_unstemmed | Synthesis of nitrogen and sulfur co-doped reduced graphene oxide as efficient metal-free cocatalyst for the photo-activity enhancement of CdS |
| title_short | Synthesis of nitrogen and sulfur co-doped reduced graphene oxide as efficient metal-free cocatalyst for the photo-activity enhancement of CdS |
| title_sort | synthesis of nitrogen and sulfur co-doped reduced graphene oxide as efficient metal-free cocatalyst for the photo-activity enhancement of cds |
| url | http://hdl.handle.net/20.500.11937/68878 |