Ball-flower like NiO/g-C3N4 heterojunction for efficient visible light photocatalytic CO2 reduction

By Jun-ying Tang, R. Guo, Weiguo Zhou, Chun-Ying Huang, Weiguo Pan. Applied Catalysis B: Environmental, 2018

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Abstract A ball-flower like NiO/g-C3N4 heterojunction composite was synthesized via a hydrothermal deposition method combined with subsequent calcination route. The NiO/g-C3N4 heterojunction exhibited a superior performance in CO2 photoreduction. A maximum CO yields of 4.17 μmol/(h g-cat) had been obtained on 40% NiO/g-C3N4 composite, which was 2.5 and 7.6 times as high as the pure g-C3N4 and NiO respectively. The promotion mechanism could be ascribed to the perfect band matching and efficient internal charge transfer within the p-n junction, which results in high-efficiency separation of photogenerated electron-hole pairs, strong visible-light response and high specific surface area.

Subfields: Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/e211c852b118f844a4ff6aea19cc05289211b234