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Facile One-Step Hydrothermal Fabrication of (Sr0.6Bi0.305)2Bi2O7/SnO2 Heterojunction with Excellent Photocatalytic Activity.
Zhu, Di; Wang, Xinling; An, Huiting; Zhong, Yan; Wang, Dianhui; Tang, Chengying; Hu, Chaohao.
Afiliação
  • Zhu D; School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China.
  • Wang X; School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China.
  • An H; School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China.
  • Zhong Y; School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China.
  • Wang D; Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, China.
  • Tang C; School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China.
  • Hu C; Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, China.
Nanomaterials (Basel) ; 10(2)2020 Feb 13.
Article em En | MEDLINE | ID: mdl-32070038
ABSTRACT
The pyrochlore-type (Sr0.6Bi0.305)2Bi2O7 (SBO), containing Bi3+ and Bi5+ mixed valent states, was recently found to be used as a new visible light responsive photocatalyst. Novel SBO/SnO2 heterostructured composites were synthesized through a facile one-step hydrothermal method. The phase structure, morphology, chemical composition, and optical properties of the obtained samples were characterized by XRD, SEM, TEM, XPS, and UV-vis DRS. Compared to pure SBO and SnO2, the synthesized SBO/SnO2 composites exhibited significantly enhanced photocatalytic efficiency. The results indicated that the photoinduced holes and superoxide radicals play a dominant role and are the main reactive species during the degradation of Methylene Blue (MB) solution under visible light irradiation. Heterojunctions, formed in samples, directly contribute to the improvement of photocatalytic efficiency of SBO/SnO2 composites, since it not only broadens the light response range, but also accelerates the separation of photogenerated carriers.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article
Texto completo
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article