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Efficient all p-types heterojunction photocathode for photoelectronchemical water splitting

Abstract

In this paper, Co3O4 with different morphologies of nanoparticles (NPs), nanosheets (NSs) and nanocubes (NCs) are directly grown on ITO substrate by hydrothermal method. Sb2S3 is loaded onto Co3O4 to construct Co3O4/Sb2S3 heterojunction which is used as all p-types photocathode for photoelectrochemical (PEC) water splitting for the first time. The specific morphologies of Co3O4 have been discussed in detail. The improved PEC properties of Co3O4/Sb2S3 heterojunction are characterized. Among them, the outstanding photocurrent density of Co3O4 NCs/Sb2S3 heterojunction photocathode is accessed by -1.32 mA∙cm-2 at -0.4 V (vs. RHE). The enhanced PEC properties profit by the more active sites of specific crystal plane, excellent optical performance, suitable band gradient alignment, increased charges separation and transfer rate.

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Publication details

The article was received on 10 Apr 2017, accepted on 09 May 2017 and first published on 12 May 2017


Article type: Paper
DOI: 10.1039/C7DT01285C
Citation: Dalton Trans., 2017, Accepted Manuscript
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    Efficient all p-types heterojunction photocathode for photoelectronchemical water splitting

    X. Lu and Z. Liu, Dalton Trans., 2017, Accepted Manuscript , DOI: 10.1039/C7DT01285C

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