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Title: Two-solvent method synthesis of SnO{sub 2} nanoparticles embedded in SBA-15: Gas-sensing and photocatalytic properties study

Graphical abstract: Different loadings of SnO{sub 2} nanoparticles embedded in mesoporous silica (sample S1, S2 and S3) show higher response to H{sub 2} at lower operating temperature than pure SnO{sub 2} nanoparticles. - Highlights: • Two-solvent method is firstly used to synthesize SnO{sub 2} nanoparticles embedded in mesoporous silica (SBA-15). • The SnO{sub 2}/SBA-15 nanocomposites show higher response to H{sub 2} at lower operating temperature than pure SnO{sub 2} nanoparticles. • The SnO{sub 2}/SBA-15 nanocomposites have higher photodegradation ability toward methylene blue than pure SnO{sub 2} nanoparticles. - Abstract: Different loadings of SnO{sub 2} nanoparticles embedded in mesoporous silica (SBA-15) were prepared via a two-solvent method with the ordered hexagonal mesoporous structure of SBA-15 kept. X-ray diffraction, transmission electron microscope, X-ray photoelectron spectroscopy and N{sub 2} adsorption porosimetry were employed to characterize the nanocomposites. Compared with pure SnO{sub 2} nanoparticles, the SnO{sub 2}/SBA-15 nanocomposites show higher response to H{sub 2} at lower operating temperature. The photocatalytic activity of as-prepared SnO{sub 2}/SBA-15 for degradation of methylene blue was investigated under UV light irradiation and the results show that the SnO{sub 2}/SBA-15 nanocomposites have higher photodegradation ability toward methylene blue than pure SnO{sub 2} nanoparticles.
Authors:
; ; ;  [1] ;  [2] ;  [1] ;  [3]
  1. Key Laboratory of Information Materials and Device, School of Physics and Materials Science, Anhui University, Hefei 230039 (China)
  2. Engineering Technology Research Center of Magnetic Materials, Hefei 230039 (China)
  3. (China)
Publication Date:
OSTI Identifier:
22345234
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 50; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ADSORPTION; COMPARATIVE EVALUATIONS; HYDROGEN; IRRADIATION; METHYLENE BLUE; NANOCOMPOSITES; NANOPARTICLES; NANOSTRUCTURES; PHOTOCATALYSIS; SILICA; SOLVENTS; SYNTHESIS; TIN OXIDES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY