Research Article

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2012, 5(11): 826–832

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https://doi.org/10.1007/s12274-012-0266-6

Hierarchical WO3 Flowers Comprising Porous Single-Crystalline Nanoplates Show Enhanced Lithium Storage and Photocatalysis

Yongcai Qiu1,2, Gui-Liang Xu3, Qin Kuang2, Shi-Gang Sun3, and Shihe Yang1,2 ()

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1 Nano Science and Technology Program, William Mong Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
2 Department of Chemistry , The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
3 State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China

Keywords: Porous single-crystal WO3 nanoplate, morphology-conserved transformation, Li ion battery anode, photocatalysis
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  • Abstract
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We report a morphology-conserved transformation approach to successfully synthesize a unique porous WO3 nanoplate assembly, which is hierarchically structured like a flower, from an ammonium tungsten peroxo oxalate containing precursor. The resulting novel, multiple length scale architecture of WO3 and its formation process have been investigated by a series of microscopic, spectroscopic and other techniques. A possible growth mechanism was proposed on the basis of the experiments. When tested as a lithium ion battery anode, the porous WO3 nanoplate assembly showed high rate capacity and high cyclability. Not least, it has also exhibited high photocatalytic activities under visible light irradiation.
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Hierarchical WO3 Flowers Comprising Porous Single-Crystalline Nanoplates Show Enhanced Lithium Storage and Photocatalysis. Nano Res. 2012, 5(11): 826–832 https://doi.org/10.1007/s12274-012-0266-6

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