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Solvothermal Synthesis of Bi2WO6 Hollow Microspheres Via Ostwald Ripening with Their Enhanced Photocatalytic Activity

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Abstract

Bi2WO6 hollow microspheres were successfully synthesized by solvothermal process in the presence of urea at proper ethylene glycol (EG)/absolute ethanol (AE) volume ratio (1:1). The samples consisted of microspheres with an average diameter of 1 μm, and the shell consisted of numerous nanoplates. The effect of solvent, the ratio of EG/AE solvents and urea amount on the morphology of the samples was studied systematically, indicating that a certain ratio of EG/AE and urea amount played an important role in the formation of hollow microspheres. Based on the detailed investigation, the formation mechanism of the hollow interior by EG-induced Ostwald ripening process was proposed. By contrast, the Bi2WO6 hollow microspheres exhibited higher catalytic activity for degradation of Rhodamine B under xenon lamp irradiation, and nearly 100 % Rhodamine B is degraded within 120 min.

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Acknowledgments

This study was supported by the Henan Fundamental and Frontier Technology Program (No. 082300420200), China, the Foundation of Henan Education Committee (2010B150015), China.

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, People’s Republic of China

    Xinjun Wang, Xiaoli Wan & Linling Chang

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  1. Xinjun Wang
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  2. Xiaoli Wan
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  3. Linling Chang
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Correspondence to Xinjun Wang.

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Wang, X., Wan, X. & Chang, L. Solvothermal Synthesis of Bi2WO6 Hollow Microspheres Via Ostwald Ripening with Their Enhanced Photocatalytic Activity. Catal Lett 144, 1268–1277 (2014). https://doi.org/10.1007/s10562-014-1271-z

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  • DOI: https://doi.org/10.1007/s10562-014-1271-z

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