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Mesoporous carbon nitride with in situ sulfur doping for enhanced photocatalytic hydrogen evolution from water under visible light
Abstract
In situ sulfur-doped mesoporous g-C3N4 (mpgCNS) was synthesized from a simple organosulfur compound, thiourea, using SiO2 nanoparticles as the hard template. The resultant product has a high surface area of 128 m2 g−1 and mesopores in the range of 10–20 nm. Based on X-ray photoelectron spectroscopy analysis, the doped sulfur was proposed to substitute carbon in mpgCNS and a downshift of 0.25 eV was resulted in its conduction band. Optical studies indicated that mpgCNS exhibits enhanced and extended light absorbance in the visible light region and a much lower density of defects compared to the native g-C3N4. As a result, mpgCNS has been found to be 30 times more active than the native g-C3N4 for hydrogen evolution from photocatalytic water splitting. A high quantum efficiency of 5.8% at 440 nm was obtained which is among the highest for carbon nitride photocatalysts.
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Cited by
Ong, W.-J., Tan, L.-L., Ng, Y. H., Yong, S.-T., & Chai, S.-P. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.6b00075 · Cited by 7,147
Dong, G., Zhang, Y., Pan, Q., & Qiu, J. (2014) · Journal of Photochemistry and Photobiology C: Photochemistry Reviews · doi:10.1016/j.jphotochemrev.2014.04.002 · Cited by 1,085
Chen, S., Hu, Y., Meng, S., & Fu, X. (2014) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2013.12.053 · Cited by 678
Song, J., Yu, Z., Gordin, M. L., & Wang, D. (2016) · Nano Letters · doi:10.1021/acs.nanolett.5b03217 · Cited by 561
Balati, A., Matta, A., Nash, K., & Shipley, H. J. (2020) · Composites Part B: Engineering · doi:10.1016/j.compositesb.2020.107785 · Cited by 42
Metadata
- Authors
- Hong, J., Xia, X., Wang, Y., & Xu, R.
- Venue
- Journal of Materials Chemistry
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2012
- Volume
- 22
- Issue
- 30
- Pages
- 15006
- ISSN
- 0959-9428 (ISSN-L)
- 1364-5501
- OpenAlex
- W2152674933
- Cited by
- 711
- References
- 0
- FWCI
- 14.94
- Type
- journal article
- Language
- en
- Open access
- closed
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- Hong, J., Xia, X., Wang, Y., & Xu, R. (2012). Mesoporous carbon nitride with in situ sulfur doping for enhanced photocatalytic hydrogen evolution from water under visible light. Journal of Materials Chemistry. https://doi.org/10.1039/c2jm32053c
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