Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 100, Issue 1-2, Pages 173-178Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2010.07.027
Keywords
Photocatalyst; ZnWO4; Nanorods; Active planes
Funding
- National Natural Science Foundation of China [20925725, 50972070]
- National Basic Research Program of China [2007CB613303]
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ZnWO4 photocatalysts with various morphologies were synthesized by a template-free hydrothermal synthesis process. The morphologies had a significant influence on the photocatalytic activity for methylene blue and Rhodamine B degradation. ZnWO4 nanorods with a highly [1 0 0] preferred orientation. obtained at pH 10, exhibited the highest photocatalytic activity among all the samples. This kind of nanorods had the most planes along the [1 0 0] direction-(0 1 0) and (0 1 1) planes, which meant most (0 1 0) and (0 1 1) planes exposed in ZnWO4 phase. Basis on the analysis of crystal plane and hydrogen-related defects, the (0 1 0) and (0 1 1) planes could speculate to be more active for photodegradation. (C) 2010 Elsevier B.V. All rights reserved.
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