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Low Temperature Synthesis of Tungsten Trioxide/Bismuth Tungstate Heterojunction with Enhanced Photocatalytic Activity

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In this paper, the heterostructure composed of tungsten trioxide (WO3) and bismuth tungstate (Bi2WO6) was synthesized by a hydrothermal treatment at low temperature of 95°C. The orthorhombic Bi2WO6 was formed on the surface of WO3 through a substitution of H2O molecules with [Bi2O2]2+ during the hydrothermal process. The transmission electron microscopy (TEM) revealed that an intimate interface was observed between the heterojunction of WO3 and Bi2WO6. The WO3/Bi2WO6 showed more UV-visible light absorption and higher photocatalytic performance compared with pure WO3 and Bi2WO6. The efficient separation of electron–hole pairs because of the special structure and spectral property of the WO3/Bi2WO6 heterojunction might account for the enhanced photocatalytic activity.
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Keywords: Heterojunction; Hydrothermal Method; Photocatalytic Activity; WO3/Bi2WO6

Document Type: Research Article

Affiliations: 1: Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, Nanjing 210023, China 2: Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, Nanjing 210023, China

Publication date: August 1, 2017

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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