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Ag –TiO2-SiO2復(fù)合光催化劑的制備與性能研究 摘要：以經(jīng)典stober（溶膠-凝膠）方法制備二氧化硅微球作為核，以酞酸丁酯為原料采用sol-gel法制備TiO2-SiO2核殼粒子，采用銀鏡法對(duì)其進(jìn)行銀摻雜。以次甲基藍(lán)為目標(biāo)降解物，對(duì)其光催化活性進(jìn)行研究。實(shí)驗(yàn)結(jié)果表明Ag改性的TiO2-SiO2核殼粒子催化活性明顯提高2.5倍，以XRD、TEM等手段進(jìn)行表征，結(jié)果表明銀摻雜的復(fù)合粒子對(duì)次甲基藍(lán)有的光催化降解表現(xiàn)出優(yōu)異的活性。 關(guān)鍵詞：stober;二氧化硅；溶膠-凝膠法；銀摻雜。  |
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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 給你參考一下  |
2樓2012-05-01 20:38:38
電分析化學(xué)
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★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
孫英昌: 金幣+15, 翻譯EPI+1, ★★★很有幫助 2012-05-02 20:20:32
孫英昌: 金幣+15, 翻譯EPI+1, ★★★很有幫助 2012-05-02 20:20:32
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Preparation and Properties of Ag –TiO2-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 |
3樓2012-05-01 20:45:04
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