Journal
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Volume 72, Issue 11, Pages 1290-1295Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2011.07.024
Keywords
Oxides; Nanostructures; Chemical synthesis; X-ray diffraction; Microstructure
Funding
- National Nature Science Foundation of China [20773039, 20977030, 21047002]
- National Basic Research Program of China (973 Program) [2007CB613301, 2010CB732306]
- Science and Technology Commission of Shanghai Municipality [10520709900, 10JC1403900]
- Fundamental Research Funds for the Central Universities
Ask authors/readers for more resources
B-doped together with Ag-loaded mesoporous TiO2 (Ag/B-TiO2) was prepared by a two-step hydrothermal method in the presence of boric acid, triblock copolymer surfactant, and silver nitrate, followed by heat treatment. The obtained samples were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), UV-vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy (XPS), and nitrogen adsorption-desorption. It was revealed that all samples consist of highly crystalline anatase with mesoporous structure. For Ag/B-TiO2, B was doped into TiO2 matrix in the form of both interstitial B and substitutional B while Ag was deposited on the surface of B-TiO2 in the form of metallic silver. Compared with the single B-doped or Ag-loaded TiO2 one, mesoporous Ag/B-TiO2 exhibits much higher visible light photocatalytic activity for the degradation of Rhodamine 6G, which can be ascribed to the synergistic effects of B doping and Ag loading by narrowing the band gap of the photocatalyst and preventing the fast recombination of the photo-generated charge carriers, respectively. (C) 2011 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available