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Issue 10, 2018
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Non-noble-metal bismuth nanoparticle-decorated bismuth vanadate nanoarray photoanode for efficient water splitting

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Abstract

Sunlight-driven photoelectrochemical (PEC) water splitting using earth-abundant semiconductor-based materials offers one promising strategy to produce attainable and sustainable carbon free energy. Herein, we demonstrate for the first time that a heterojunction nanostructure of a Bi/BiVO4 photoanode is fabricated by directly coupling semimetal Bi nanoparticles to BiVO4 nanoarrays, showing excellent water oxidation performance. The as-obtained photoanode exhibits a remarkable photocurrent density of 1.96 mA cm−2 at 1.23 V versus a reversible hydrogen electrode (vs. RHE) under AM 1.5G (100 mW cm−2) irradiation, which is approximately 2-fold higher than that of the pristine BiVO4. Based on the detailed analyses of JV, it, M–S and EIS plots, the reason for the high photocurrent density of Bi/BiVO4 can be attributed to the improved charge separation efficiency, the enhanced hole injection efficiency and the suppressed back reaction of water oxidation.

Graphical abstract: Non-noble-metal bismuth nanoparticle-decorated bismuth vanadate nanoarray photoanode for efficient water splitting

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Publication details

The article was received on 16 May 2018, accepted on 21 Jun 2018 and first published on 04 Jul 2018


Article type: Research Article
DOI: 10.1039/C8QM00239H
Citation: Mater. Chem. Front., 2018,2, 1799-1804
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    Non-noble-metal bismuth nanoparticle-decorated bismuth vanadate nanoarray photoanode for efficient water splitting

    B. Wulan, S. Yi, S. Li, Y. Duan, J. Yan, X. Zhang and Q. Jiang, Mater. Chem. Front., 2018, 2, 1799
    DOI: 10.1039/C8QM00239H

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