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One-step solid-state synthesis of Cu2O/Bi2O3 nanocomposite at room temperature and its enhanced photocatalytic activity under visible light irradiation

L. LI1, J. JIANG1, X. LUAN1, C. FENG1, Q. YANG1, M. CHEN1, M. ZHANG1,*

Affiliation

  1. School of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, China

Abstract

A novel visible-light-driven Cu2O/Bi2O3 nanocomposite photocatalyst was fabricated at room temperature via a simple mild one-step solid-state reaction method. The as-synthesized products were characterized by X-ray powder diffraction and UV–Vis diffuse reflectance spectroscopy. The results showed that the as-synthesized Cu2O/Bi2O3 nanocomposite was composed of cubic Cu2O and monoclinic alpha-Bi2O3 with a good visible-light absorption performance. The Cu2O/Bi2O3 nanocomposite can be used for the degradation of methyl orange at room temperature under visible light irradiation. The photocatalytic activity of Cu2O/Bi2O3 was higher than that of the pure Cu2O and Bi2O3. Based on the band gap structures of Cu2O and Bi2O3, the enhanced photocatalytic activity of the composite can be attributed to the efficient separation of photogenerated electrons and holes..

Keywords

Bi2O3, Cu2O, Composites, Solid-state reaction, Photocatalytic activity.

Submitted at: Feb. 2, 2015
Accepted at: March 19, 2015

Citation

L. LI, J. JIANG, X. LUAN, C. FENG, Q. YANG, M. CHEN, M. ZHANG, One-step solid-state synthesis of Cu2O/Bi2O3 nanocomposite at room temperature and its enhanced photocatalytic activity under visible light irradiation, Journal of Optoelectronics and Advanced Materials Vol. 17, Iss. 3-4, pp. 372-376 (2015)