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Enhanced photoelectrochemical water splitting by oxides heterojunction photocathode coupled with Ag

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Abstract

A novel one-dimensional Co3O4/CuO/Ag composite structure film was directly grown on indium tin oxide glass substrate by a simple hydrothermal method and electrodeposition method. The film was employed for the first time as a photocathode for photoelectrochemical (PEC) water splitting to generate hydrogen. The photocurrent density of the Co3O4/CuO/Ag composite structure achieved −5.13 mA cm−2 at −0.2 V vs. RHE, which is roughly 12.8 times that of 1D Co3O4 nanowires and 3.31 times Co3O4/CuO heterojunction photocathodes. The enhanced PEC performance of this Co3O4/CuO/Ag composite structure ascribes increased light-harvesting and light-absorption, distensible photoresponse range, decreased interface charge transfer resistance, and improved photogenerated electron–hole pairs transfer and separation.

Graphical abstract: Enhanced photoelectrochemical water splitting by oxides heterojunction photocathode coupled with Ag

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Publication details

The article was received on 19 Jun 2017, accepted on 07 Jul 2017 and first published on 10 Jul 2017


Article type: Paper
DOI: 10.1039/C7DT02214J
Citation: Dalton Trans., 2017, Advance Article
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    Enhanced photoelectrochemical water splitting by oxides heterojunction photocathode coupled with Ag

    X. Lu and Z. Liu, Dalton Trans., 2017, Advance Article , DOI: 10.1039/C7DT02214J

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