Issue 10, 2016
From the journal:

Catalysis Science & Technology

In-built Tb4+/Tb3+ redox centers in terbium-doped bismuth molybdate nanograss for enhanced photocatalytic activity

Hongda Li,a   Wenjun Li,*a   Shaonan Gu,a   Fangzhi Wanga  and  Hualei Zhoua  

* Corresponding authors

a Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry, University of Science and Technology Beijing, No. 30 Xueyuan Rd., Haidian District, Beijing 100083, China
E-mail: wjli_ustb@163.com
Tel: +86 10 62332468

Abstract

A series of terbium-doped Bi2MoO6 with different Tb contents were synthesized using a hydrothermal method. The crystalline structure, surface area, morphology, chemical state and optical properties were analyzed in detail. The photocatalytic activity of the samples was evaluated by degradation of organics under visible light irradiation. The results indicated that doping of terbium ions could obviously improve the photocatalytic activity of Bi2MoO6, which was attributed to the generation of Tb4+/Tb3+ redox centers in terbium-doped Bi2MoO6. The photoluminescence (PL) spectroscopy, photocurrent measurement and active species trapping experiments suggest that the recombination of photo-generated electron–hole pairs was efficiently restrained by a trapping–releasing process between the Tb4+ and Tb3+ ions.

Graphical abstract: In-built Tb4+/Tb3+ redox centers in terbium-doped bismuth molybdate nanograss for enhanced photocatalytic activity

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Article information

DOI
https://doi.org/10.1039/C5CY01730K
Article type
Paper
Submitted
11 Oct 2015
Accepted
11 Dec 2015
First published
15 Dec 2015

Catal. Sci. Technol., 2016,6, 3510-3519

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In-built Tb4+/Tb3+ redox centers in terbium-doped bismuth molybdate nanograss for enhanced photocatalytic activity

H. Li, W. Li, S. Gu, F. Wang and H. Zhou, Catal. Sci. Technol., 2016, 6, 3510 DOI: 10.1039/C5CY01730K

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