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- ×¢²á: 2012-03-26
- ÐÔ±ð: MM
- רҵ: µç»¯Ñ§·ÖÎö
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The study of the preparation and properties of composite photocatalyst Ag-TiO2-SiO2 Abstract: we used silica microspheres prepared by classical stober (sol-gel) preparation methods as nuclear, and prepared core-shell particles TiO2-SiO2 by sol-gel method with phthaly butyl acetate as raw materials,and doped silver by method of the silver-mirror . We regarded methylene blue as the goal degradants, and studied its photocatalytic activity . The experimental results show that the catalytic activity of modified core-shell particles, Ag TiO2-SiO2 , improved obviously 2.5 times, we characterized by XRD, TEM and the results show that the composite particles doped with silver display excellent activity on some photocatalytic degradations of methylene blue . Keywords: stober; Silica; Sol-gel; Silver dopping ¸øÄã²Î¿¼Ò»Ï |

2Â¥2012-05-01 20:38:38
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ËïÓ¢²ý: ½ð±Ò+15, ·ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú 2012-05-02 20:20:32
ËïÓ¢²ý: ½ð±Ò+15, ·ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú 2012-05-02 20:20:32
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Preparation and Properties of Ag ¨CTiO2-SiO2 composite photocatalyst abstract:we prepared Silica Microspheres as a nuclear by the classic stober ( sol - gel ) method; with phthalic acid butyl ester as the raw material ,prepared core-shell particles of TiO2-SiO2 by the sol - gel method ,With silver mirror method to silver -doped.Sub methyl blue for Target degradation,studied The photocatalytic activity.Experimental results showed that the catalytic activity of core-shell particles of TiO2-SiO2 what modified by Ag increased by 2.5 times Significantly.characterized by XRD , TEM and other means.The results showed that the composite particles of silver doped some photocatalytic methylene blue degradation exhibited excellent activity . Keywords : stober , ; silica ; sol - gel method ; silver doped |
3Â¥2012-05-01 20:45:04















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