Depletion layer controls photocatalytic hydrogen evolution with p-type gallium phosphide particles

作者: Zeqiong Zhao , Emma J. Willard , Julius R. Dominguez , Zongkai Wu , Frank E. Osterloh

DOI: 10.1039/C9TA05879F

关键词: PhotocatalysisDepletion regionPhotochemistryAcceptorBand gapSurface photovoltageSurface statesMaterials scienceElectrolyteGallium phosphideRenewable Energy, Sustainability and the EnvironmentGeneral Materials ScienceGeneral chemistry

摘要: p-Type gallium phosphide (p-GaP) is an established photocathode material for hydrogen evolution, however, photocatalytic hydrogen evolution from p-GaP photocatalysts generally proceeds with very low activity. This can be understood on the basis of the space charge layer model presented here.

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