Two-dimensional amorphous NiO as a plasmonic photocatalyst for solar H2 evolution

Zhaoyong Lin, Chun Du, Bo Yan, Chengxin Wang and Guowei Yang ()
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Zhaoyong Lin: Sun Yat-sen University
Chun Du: Sun Yat-sen University
Bo Yan: Sun Yat-sen University
Chengxin Wang: Sun Yat-sen University
Guowei Yang: Sun Yat-sen University

Nature Communications, 2018, vol. 9, issue 1, 1-11

Abstract: Abstract Amorphous materials are usually evaluated as photocatalytically inactive due to the amorphous nature-induced self-trapping of tail states, in spite of their achievements in electrochemistry. NiO crystals fail to act as an individual reactor for photocatalytic H2 evolution because of the intrinsic hole doping, regardless of their impressive cocatalytic ability for proton/electron transfer. Here we demonstrate that two-dimensional amorphous NiO nanostructure can act as an efficient and robust photocatalyst for solar H2 evolution without any cocatalysts. Further, the antenna effect of surface plasmon resonance can be introduced to construct an incorporate antenna-reactor structure by increasing the electron doping. The solar H2 evolution rate is improved by a factor of 19.4 through the surface plasmon resonance-mediated charge releasing. These findings thus open a door to applications of two-dimensional amorphous NiO as an advanced photocatalyst.

Date: 2018
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DOI: 10.1038/s41467-018-06456-y

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