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Sol-gel synthesis of less expensive mesoporous titania-tin dioxide systems: Investigation of the influence of tin dioxide on the phase structure, morphology and optical properties

Title
Sol-gel synthesis of less expensive mesoporous titania-tin dioxide systems: Investigation of the influence of tin dioxide on the phase structure, morphology and optical properties
Author
김희택
Keywords
Composites; Microstructure; Nanostructures; Crystal structure; Semiconductors; PHOTOCATALYTIC PROPERTIES; SODIUM-SILICATE; TIO2-SIO2 AEROGELS; THIN-FILMS; NANOCRYSTALS; PERFORMANCE; OXYCHLORIDE; COMPOSITE; ANATASE; ENHANCEMENT
Issue Date
2017-04
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
MATERIALS RESEARCH BULLETIN, v. 88, Page. 281-290
Abstract
Herein the influence of SnO2 on the optical, morphology and phase structure of mesoporous TiO2-SnO2 composites was examined. Composites with Sn/Ti ratio ranging from 0.1 to 5 were synthesized using less expensive sources in the absence of additives. The obtained samples were examined by XRD, HRTEM, SEM-EDAX, XPS, UV-vis DRS, XRF, TGA and nitrogen gas physisorption studies analyses. The physicochemical properties of the TiO2-SnO2 systems depended mainly on the Sn-to-Ti ratio, calcination temperature and the interaction between Se4+ and Ti4+. XRD results depicted that samples with Sn/Ti = 0.1 calcined at <= 600 degrees C exhibited pure anatase TiO2 crystals and the tendency of increasing Sn4+ content facilitated a phase transformation to attain rutile structure. Optical analyses of the samples showed that the absorption of the samples can be extended into the visible region. This study provides a systematic and economical method for large-scale production of TiO2 based composites with desirable properties for various applications. (C) 2017 Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0025540817300077https://repository.hanyang.ac.kr/handle/20.500.11754/71976
ISSN
0025-5408; 1873-4227
DOI
10.1016/j.materresbull.2017.01.001
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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