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Hierarchically Structured Porous SnO2/TiO2 Materials with Design Controllable Phases and Enhanced Photocatalytic Activity

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Abstract

To increase the photogenerated carrier separation and reduce the electron-hole recombination process for photocatalysts performance. In this article, hierarchically macroporous structured TiO2/SnO2 materials with controllable composition and phases have been successfully synthesized by using a typical process. This method involves several sequential preparation steps: (1) preparation of core-shell structure SnO2/PS submicrospheres by hydrothermal method; (2) preparation of TiO2/SnO2/PS submicrospheres by assembling amorphous TiO2 on surface of SnO2/PS submicrospheres; (3) direct calcination of TiO2/SnO2/PS submicrospheres to eventually produce hierarchically structured TiO2/SnO2 materials with pores-in-pores. With rutile phases TiO2, TiO2/SnO2 macroporous materials show significantly enhanced catalytic activity when used as photocatalysts for the degradation of Rhodamine B under UV irradiation. The photodegradation ratio of Rhodamine B was 96% for 25 min.

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Author information

Authors and Affiliations

  1. Hefei No. 9 High School, 230601, Anhui, PR China

    Haoran Zhu

  2. Hefei No. 45 Middle School, 230001, Anhui, PR China

    Heyi Shao

  3. School of Materials and Chemical Engineering, Anhui Jianzhu University, Hefei 230022, Anhui, PR China

    Qingchun Zhao

Authors
  1. Haoran Zhu
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  2. Heyi Shao
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  3. Qingchun Zhao
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Correspondence to Qingchun Zhao.

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The text was submitted by the authors in English.

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Zhu, H., Shao, H. & Zhao, Q. Hierarchically Structured Porous SnO2/TiO2 Materials with Design Controllable Phases and Enhanced Photocatalytic Activity. Russ J Appl Chem 91, 150–158 (2018). https://doi.org/10.1134/S1070427218010238

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  • DOI: https://doi.org/10.1134/S1070427218010238

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