Two-solvent method synthesis of SnO₂ nanoparticles embedded in SBA-15: Gas-sensing and photocatalytic properties study

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• 作者：Peng Dai ; Lili Zhang ; Guang Li ; Zhaoqi Sun ; Xiansong Liu ; Mingzai Wu
• 关键词：A. Composites ; B. Chemical synthesis ; C. Photoelectron spectroscopy ; D. Catalytic properties
• 刊名：Materials Research Bulletin
• 出版年：February, 2014
• 年：2014
• 卷：50
• 期：Complete
• 页码：440-445
• 全文大小：1455 K

文摘

Different loadings of SnO₂ 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 N₂ adsorption porosimetry were employed to characterize the nanocomposites. Compared with pure SnO₂ nanoparticles, the SnO₂/SBA-15 nanocomposites show higher response to H₂ at lower operating temperature. The photocatalytic activity of as-prepared SnO₂/SBA-15 for degradation of methylene blue was investigated under UV light irradiation and the results show that the SnO₂/SBA-15 nanocomposites have higher photodegradation ability toward methylene blue than pure SnO₂ nanoparticles.