One-pot synthesis of BiSbO4/BiOBr nanocomposite with excellent UV-photocatalytic activity

• Published in: Ceramics international Vol. 48; no. 6; pp. 8715 - 8720
• Main Authors: Van, Nguyen Duc, Huong, Nguyen Thanh, Hong Le, Ngo Thi, Nam, Man Hoai
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 15-03-2022
• Subjects: BiSbO4/BiOBr nanocomposite; Heterogenous phase junction; Hydrothermal synthesis; Photocatalysis; Heterogenous phase junction; BiSbO4/BiOBr nanocomposite; Hydrothermal synthesis; Photocatalysis
• ISSN: 0272-8842; 1873-3956
• DOI: 10.1016/j.ceramint.2021.12.022

A facile one-pot hydrothermal synthesis procedure and UV-photocatalytic activity of a series of BiSbO4/BiOBr nanocomposites with various BiSbO4-rich contents were first-time reported in this work. The results showed that BiSbO4/BiOBr nanocomposites containing 10-nm BiOBr nanocubes embedded on BiSbO4 nanobundles were obtained readily. For the optimized BiSbO4/BiOBr nanocomposite, the methyl orange photocatalytic removal efficiency under 365-nm UV illumination was 90% after 120 min, pronouncedly higher than that of the pure BiSbO4 sample (22%). A heterogeneous phase junction formed between BiSbO4 nanobundles and embedded BiOBr nanocubes was supposed to be a major factor causing this enhanced photocatalytic activity of the optimized nanocomposite sample. The mechanism of methyl orange photodegradation over BiSbO4/BiOBr nanocomposites containing heterogeneous phase junction was also proposed.