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Visible Light-Driven α-Fe2O3 Nanorod/Graphene/BiV1–xMoxO4 Core/Shell Heterojunction Array for Efficient Photoelectrochemical Water Splitting

Hou, Yang, Zuo, Fan, Dagg, Alex, Feng, Pingyun·2012·Nano Letters
DOI 10.1021/nl303961c
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Abstract

We report the design, synthesis, and characterization of a novel heterojunction array of α-Fe(2)O(3)/graphene/BiV(1-x)Mo(x)O(4) core/shell nanorod for photoelectrochemical water splitting. The heterojunction array was prepared by hydrothermal deposition of α-Fe(2)O(3) nanorods onto Ti substrate, with subsequent coating of graphene interlayer and BiV(1-x)Mo(x)O(4) shell by photocatalytic reduction and a spin-coating approach, respectively. The heterojunction yielded a pronounced photocurrent density of ∼1.97 mA/cm(2) at 1.0 V vs Ag/AgCl and a high photoconversion efficiency of ∼0.53% at -0.04 V vs Ag/AgCl under the irradiation of a Xe lamp. The improved photoelectrochemical properties benefited from (1) the enhanced light absorption due to behavior of the "window effect" between the α-Fe(2)O(3) cores and BiV(1-x)Mo(x)O(4) shells, and (2) the improved separation of photogenerated carriers at the α-Fe(2)O(3) nanorod/graphene/BiV(1-x)Mo(x)O(4) interfaces. Our results demonstrate the advantages of the novel graphene-mediated core/shell heterojunction array and provide a valuable insight for the further development of such materials.

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Metadata

Authors
Hou, Y., Zuo, F., Dagg, A., & Feng, P.
Venue
Nano Letters
Publisher
American Chemical Society (ACS)
Published
2012-11-19
Volume
12
Issue
12
Pages
6464-6473
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
DOI
10.1021/nl303961c
OpenAlex
W2316850615
Cited by
450
References
3
FWCI
14.46
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Visible Light-Driven α-Fe2O3 Nanorod/Graphene/BiV1–xMoxO4 Core/Shell Heterojunction Array for Efficient Photoelectrochemical Water Splitting. https://app.cochat.ai/papers/10.1021/nl303961c
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Hou, Y., Zuo, F., Dagg, A., & Feng, P. (2012). Visible Light-Driven α-Fe2O3 Nanorod/Graphene/BiV1–xMoxO4 Core/Shell Heterojunction Array for Efficient Photoelectrochemical Water Splitting. Nano Letters. https://doi.org/10.1021/nl303961c

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