Journal
MATERIALS RESEARCH BULLETIN
Volume 48, Issue 11, Pages 4601-4605Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2013.07.047
Keywords
Nanostructures; Composites; Chemical synthesis; Catalytic properties
Categories
Funding
- Natural Science Foundation of Jiangsu Province [BK2012716]
- Postdoctoral Foundation of China [2012M520054]
- Universities Natural Science Foundation of Jiangsu Province [12KJD150003, 11KJB480001]
- Postdoctoral Foundation of Jiangsu Province [1102125C]
- Highly Qualified Professional Initial Funding of Jiangsu University [12JDG052]
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Bi@Bi2O3@carboxylate-rich carbon core-shell nanosturctures (Bi@Bi2O3@CRCSs) have been synthesized via a one-step method. The core-shell nanosturctures of the as-prepared samples were confirmed by Xray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and Raman spectroscopy. The formation of Bi@Bi2O3@CRCSs core-shell nanosturctures should attribute to the synergetic roles of different functional groups of sodium gluconate. Bi@Bi2O3@CRCSs exhibits significant enhanced photocatalytic activity under visible light irradiation (lambda > 420 nm) and shows an O-2-dependent feature. According to trapping experiments of radicals and holes, hydroxyl radicals were not the main active oxidative species in the photocatalytic degradation of MB, but O-2(center dot-) are the main active oxidative species. (C) 2013 Elsevier Ltd. All rights reserved.
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