Oxalic acid mediated synthesis of WO3·H2O nanoplates and self-assembled nanoflowers under mild conditions |
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Authors: | Linzhi Li Yi Wang Dechong Ma Shengnan Hou |
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Institution: | a College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China b College of Chemistry, Jilin University, Changchun, 130012, PR China c Department of Regenerative Medicine, School of Pharmaceutical Sciences, Jilin University, Changchun 130023, PR China |
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Abstract: | Tungsten oxide hydrate (WO3·H2O) nanoplates and flower-like assemblies were successfully synthesized via a simple aqueous method. The effects of reaction parameters in solution on the preparation were studied. Nanoplates and nanoflowers can be selectively prepared by changing the amount of H2C2O4. In-situ assembly of nanoplates to nanoflowers was also proposed for the formation of assembled nanostructures. In addition, the reaction time and temperature have important effects on the sizes of the as-obtained samples. Crystal structure, morphology, and composition of final nanostructures were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Optical properties of the synthesized samples and the growth mechanism were studied by UV-vis detection. Degradation experiments of Rhodamine B (RhB) were also performed on samples of nanoplates and nanoflowers under visible light illumination. Nanoflower sample exhibited preferable photocatalytic property to nanoplate sample. |
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Keywords: | WO3· H2O Nanoplate Nanoflower Oxalic acid |
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