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In Situ Template-Free Ion-Exchange Process to Prepare Visible-Light-Active g-C3N4/NiS Hybrid Photocatalysts with Enhanced Hydrogen Evolution Activity
Abstract
Nickel sulfide (NiS) and graphitic carbon nitride (g-C 3 N 4 ) hybrid photocatalysts were prepared via a simple and reproducible in situ template-free ion-exchange process. The physical and photophysical properties of the g-C 3 N 4 /NiS hybrid photocatalysts were characterized by X-ray diffraction (XRD), high-resolution transmission electron microcopy (HRTEM), and ultraviolet visible diffuse reflection spectroscopy (DRS). The photocatalytic hydrogen evolution, photoluminescence spectroscopy (PL), and photoelectrochemical (PEC) experiments indicate that the NiS cocatalysts can efficiently promote the separation of photogenerated charge carriers in g-C 3 N 4 and consequently enhance the H 2 evolution activity. The g-C 3 N 4 /NiS-1.5 mol % sample shows the highest photocatalytic activity, and the corresponding H 2 evolution rate is 44.77 μmol h –1, which approached that of optimal 2.0 wt % Pt/g-C 3 N 4 (47.61 μmol h –1 ). A possible photocatalytic mechanism of NiS cocatalysts on the improvement of the photocatalytic performance of g-C 3 N 4 is proposed and supported by PL and PEC results. The g-C 3 N 4 /NiS shows high stable photocatalytic hydrogen evolution ability under visible light irradiation.
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Cites
Ge, L., Han, C., Xiao, X., & Guo, L. (2013) · International Journal of Hydrogen Energy · doi:10.1016/j.ijhydene.2013.04.006 · Cited by 401
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
Noble metal-free hydrogen evolution catalysts for water splitting
Zou, X., & Zhang, Y. (2015) · Chemical Society Reviews · doi:10.1039/c4cs00448e · Cited by 5,955
Visible-light driven heterojunction photocatalysts for water splitting – a critical review
Moniz, S. J. A., Shevlin, S. A., Martin, D. J., Guo, Z.-X., & Tang, J. (2015) · Energy & Environmental Science · doi:10.1039/c4ee03271c · Cited by 2,363
Ren, Y., Zeng, D., & Ong, W.-J. (2019) · Chinese Journal of Catalysis · doi:10.1016/s1872-2067(19)63293-6 · Cited by 528
Recent advances in g-C3N4-based heterojunction photocatalysts
Li, Y., Zhou, M., Cheng, B., & Shao, Y. (2020) · Journal of Materials Science & Technology · doi:10.1016/j.jmst.2020.04.028 · Cited by 478
Jiang, D., Li, J., Xing, C., Zhang, Z., Meng, S., & Chen, M. (2015) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.5b05118 · Cited by 328
Self-citationNickel selenides as pre-catalysts for electrochemical oxygen evolution reaction: A review
Anantharaj, S., & Noda, S. (2020) · International Journal of Hydrogen Energy · doi:10.1016/j.ijhydene.2020.04.073 · Cited by 187
Metadata
- Authors
- Chen, Z., Sun, P., Fan, B., Zhang, Z., & Fang, X.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2014-04-08
- Volume
- 118
- Issue
- 15
- Pages
- 7801-7807
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2328021023
- Cited by
- 242
- References
- 1
- FWCI
- 9.50
- Type
- journal article
- Language
- en
- Open access
- closed
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