Effect of preparation conditions of calcium bismuthate based photocatalyst on its catalytic properties

Dmitry S. Shtarev; Anna V. Shtareva; Artem I. Blokh; Alexander V. Syuy

doi:10.1117/12.2268134

14 December 2016 Effect of preparation conditions of calcium bismuthate based photocatalyst on its catalytic properties

Dmitry S. Shtarev, Anna V. Shtareva, Artem I. Blokh, Alexander V. Syuy

Proceedings Volume 10176, Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics; 101761K (2016) https://doi.org/10.1117/12.2268134
Event: Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics, 2016, Khabarovsk, Russia

Abstract

In this study, a series of calcium bismuthate samples having a different composition and type of crystal lattice was obtained. The diffuse reflectance spectroscopy found that both factors impact the calcium bismuthate ability to absorb the visible light irradiation. It was shown that the bandgap of synthesized photocatalysts depends on the degree of lattice defects. The catalytic activity of photocatalysts was studied in terms of decomposition rate of methylene blue by visible light in the presence of various samples of calcium bismuthate. It was found that the catalytic activity of calcium bismuthates with orthorhombic crystal lattice is lower than that of similar samples of rhombohedral lattice. Thus, samples with the lowest number of cation sublattice defects have the greatest catalytic activity.

Citation Download Citation

Dmitry S. Shtarev, Anna V. Shtareva, Artem I. Blokh, and Alexander V. Syuy "Effect of preparation conditions of calcium bismuthate based photocatalyst on its catalytic properties", Proc. SPIE 10176, Asia-Pacific Conference on Fundamental Problems of Opto- and Microelectronics, 101761K (14 December 2016); https://doi.org/10.1117/12.2268134

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