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Issue 7, 2018
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High-performance NiO/g-C3N4 composites for visible-light-driven photocatalytic overall water splitting

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Abstract

Overall water splitting is considered as one of the most promising strategies to produce renewable energy. Based on low-cost g-C3N4, finding an abundant co-catalyst with high-performance photocatalytic activity and good stability is one of the solutions to realize overall water splitting. We designed amorphous NiO modified g-C3N4 (NiO/g-C3N4) as a photocatalyst, which could achieve efficient visible-light-driven overall water splitting without a sacrificial agent. After adjusting NiO content and calcination temperature, NiO/g-C3N4 with 1.26 wt% NiO content obtained at 300 °C shows optimal overall water splitting performance, with a hydrogen evolution rate of 1.41 μmol h−1 and an oxygen evolution rate of 0.71 μmol h−1 (λ ≥ 420 nm). NiO/g-C3N4 can be reused at least 7 times (24 h each time). The visible-light-driven overall water splitting performance of NiO/g-C3N4 should be attributed to amorphous NiO as the co-catalyst being able to promote photoinduced electron–hole pair separation, provide active sites and help to decompose generated H2O2.

Graphical abstract: High-performance NiO/g-C3N4 composites for visible-light-driven photocatalytic overall water splitting

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Publication details

The article was received on 31 Mar 2018, accepted on 08 May 2018 and first published on 14 May 2018


Article type: Research Article
DOI: 10.1039/C8QI00292D
Citation: Inorg. Chem. Front., 2018,5, 1646-1652
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    High-performance NiO/g-C3N4 composites for visible-light-driven photocatalytic overall water splitting

    Y. Fu, C. Liu, C. Zhu, H. Wang, Y. Dou, W. Shi, M. Shao, H. Huang, Y. Liu and Z. Kang, Inorg. Chem. Front., 2018, 5, 1646
    DOI: 10.1039/C8QI00292D

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