title: Facile synthesis of Fe(2)O(3) nanoparticles anchored on Bi(2)MoO(6) microflowers with improved visible light photocatalytic activity.
abstract: Constructing novel semiconductor heterojunctions is emerging as one of the efficient methods to develop excellent photocatalysts. Herein, we report the design and synthesis of Bi2MoO6microflowers decorated by Fe2O3nanoparticles as an efficient visible-light-driven photocatalyst via a simple solvothermal precipitation-calcination method. The as-prepared Fe2O3/Bi2MoO6heterojunctions were systematically characterized by using several techniques. The photocatalytic properties of these heterojunctions were estimated by degrading rhodamine B (RhB) and para-chlorophenol (4-CP) under visible light (λ>400nm). They showed much higher photocatalytic activity than pure Fe2O3or Bi2MoO6. The heterojunction with Fe/Bi molar ratio of 0.2 presented the highest activity. The RhB degradation rate constant was about 4.8 times or 3.8 times higher than that of Bi2MoO6or a mechanical mixture of Fe2O3and Bi2MoO6. The remarkable enhanced photocatalytic activity is attributed to the effective suppression of electron-hole recombination. The photogenerated holes (h+) and superoxide radical anions (O2-) were found to be the major active species. Fe2O3/Bi2MoO6has great potential as an effective and stable visible-light-driven photocatalysts for wastewater treatment.
authors.affiliation: Innovation & Application Institute, Zhejiang Ocean University, Zhoushan, Zhejiang Province 316022, China; Zhejiang Provincial Key Laboratory of Health Risk Factors for Seafood, Zhoushan Municipal Center for Disease Control and Prevention, Zhoushan 316021, China. Electronic address: lishijie@zjou.edu.cn.
authors.forename: Shijie
authors.initials: S
authors.lastname: Li
authors.affiliation: Innovation & Application Institute, Zhejiang Ocean University, Zhoushan, Zhejiang Province 316022, China.
authors.forename: Shiwei
authors.initials: S
authors.lastname: Hu
authors.affiliation: State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
authors.forename: Junlei
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Innovation & Application Institute, Zhejiang Ocean University, Zhoushan, Zhejiang Province 316022, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Jiang
authors.affiliation: State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.
authors.forename: Jianshe
authors.initials: J
authors.lastname: Liu
keywords: Fe(2)O(3)/Bi(2)MoO(6); Heterojunction; Microflower; Photocatalysis; Visible light