Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 237, Issue -, Pages 802-810Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2018.06.042
Keywords
g-C3N4; NiO/g-C(3)N(4)composite; p-n heterojunction; CO(2)photoreduction; Ball-flower
Funding
- Natural Science Foundation of China [21546014]
- Natural Science Foundation of Shanghai, China [14ZR1417800]
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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 mu mol/(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.
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