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Nanomaterials 2016, 6(8), 138;

Synthesis of p-Co3O4/n-TiO2 Nanoparticles for Overall Water Splitting under Visible Light Irradiation

Key Laboratory of Instrumentation Science and Dynamic Measurement of Ministry of Education, North University of China, Taiyuan 030051, China
MicroNano System Research Center, Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education and Shanxi Province & College of Information Engineering, Taiyuan University of Technology, Taiyuan 030024, China
School of Materials Science and Engineering, North University of China, Taiyuan 030051, China
These authors contributed equally to this work.
Authors to whom correspondence should be addressed.
Academic Editors: Hongqi Sun and Zhaohui Wang
Received: 27 May 2016 / Revised: 15 July 2016 / Accepted: 15 July 2016 / Published: 27 July 2016
(This article belongs to the Special Issue Nanoscale in Photocatalysis)
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p-Co3O4/n-TiO2 nanoparticles (~400 nm) for photocatalysis were prepared via carbon assisted method and sol-gel method in this work. The paper also studied the application of visible light illuminated p-Co3O4/n-TiO2 nanocomposites cocatalyst to the overall pure water splitting into H2 and O2. In addition, the H2 evolution rate of the p-Co3O4/n-TiO2 nanocomposites is 25% higher than that of the pure Co3O4 nanoparticles. Besides, according to the results of the characterizations, the scheme of visible light photocatalytic water splitting is proposed, the Co3O4 of the nanocomposites is excited by visible light, and the photo-generated electrons and holes existing on the conduction band of Co3O4 and valence band of TiO2 have endowed the photocatalytic evolution of H2 and O2 with higher efficiency. The optimal evolution rate of H2 and O2 is 8.16 μmol/h·g and 4.0 μmol/h·g, respectively. View Full-Text
Keywords: nanocomposites; photocatalysis; visible light; overall water splitting nanocomposites; photocatalysis; visible light; overall water splitting

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhang, Q.; Hai, Z.; Jian, A.; Xu, H.; Xue, C.; Sang, S. Synthesis of p-Co3O4/n-TiO2 Nanoparticles for Overall Water Splitting under Visible Light Irradiation. Nanomaterials 2016, 6, 138.

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