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Ag –TiO2-SiO2复合光催化剂的制备与性能研究 摘要：以经典stober（溶胶-凝胶）方法制备二氧化硅微球作为核，以酞酸丁酯为原料采用sol-gel法制备TiO2-SiO2核壳粒子，采用银镜法对其进行银掺杂。以次甲基蓝为目标降解物，对其光催化活性进行研究。实验结果表明Ag改性的TiO2-SiO2核壳粒子催化活性明显提高2.5倍，以XRD、TEM等手段进行表征，结果表明银掺杂的复合粒子对次甲基蓝有的光催化降解表现出优异的活性。 关键词：stober;二氧化硅；溶胶-凝胶法；银掺杂。  |
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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 给你参考一下  |
2楼2012-05-01 20:38:38
电分析化学
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孙英昌: 金币+15, 翻译EPI+1, ★★★很有帮助 2012-05-02 20:20:32
孙英昌: 金币+15, 翻译EPI+1, ★★★很有帮助 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楼2012-05-01 20:45:04