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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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