期刊
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
卷 178, 期 10, 页码 725-729出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mseb.2013.03.006
关键词
Hollow nano-sphere; Tin oxide; Sacrificing template; Specific surface area; Photoluminescence; Photocatalysis
资金
- National Natural Science Foundation of China [11074069, 61176116]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20120161130003]
- Hunan Provincial Science and Technology Project of China [2011SK3217, 2012FJ4121]
- Graduate Science and Technology Innovation Program of Hunan Province [CX2011B153]
- Henan Provincial Natural Science Foundation of China [122300410350]
- Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
- Hunan Provincial Natural Science Foundation of China [12JJ3009]
Size tunable solid SnO2 (STO) and hollow SnO2 (HTO) nanospheres were prepared by a sacrificing template method. The peaks around 390 nm were observed in photoluminescence (PL) spectra. Based on the results, the PL intensity exhibits morphology-dependence and size-dependence, and HTO structure displays better optical properties than STO structure. The degradation of Methyl Orange (MO) in aqueous solution is selected as a probe reaction to evaluate the catalytic activity of nano-SnO2. The result shows that HTO structure presents stronger photocatalytic (PC) activity. According to the result of specific surface area testing, the improved PL and PC properties of HTO structure can be mainly explained by the surface effect induced by large specific surface area. This work is meaningful for developing nanomaterials with enhanced optical and photochemical properties. (C) 2013 Elsevier B.V. All rights reserved.
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