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1. 发明授权

US08158005B1 Functional composites formed from colloidal polymer particles with photocatalytic metal oxide (MOx) nanoparticles 有权
标题翻译：由胶体聚合物颗粒与光催化金属氧化物（MOx）纳米颗粒形成的功能复合材料
公开(公告)号：US08158005B1
公开(公告)日：2012-04-17
申请号：US12263799
申请日：2008-11-03
申请人： Vinay Gupta , Maya Trotz , Cecil Coutinho
发明人： Vinay Gupta , Maya Trotz , Cecil Coutinho
IPC分类号： C02F1/28 , C02F1/32
CPC分类号： C02F1/725 , C02F1/32 , C02F2101/308 , C02F2305/10
摘要： Microcomposites comprising titanium dioxide (TiO2) nanoparticles embedded within cross-linked, thermally responsive microgels of poly(N-isopropylacrylamide) are disclosed. Interpenetrating linear chains of poly(acrylic acid) functionalize the nanoparticles for dispersal within the microgel framework. The microcomposites show rapid sedimentation, which is useful for gravity separation applications such as environmental remediation via photocatalytic degradation.The extent of loading of the TiO2 within the colloidal particles can be easily manipulated from 10% (weight) to a value as high as 75%. The microgel-titania composites showed rapid sedimentation, which is useful for gravity separation of these particles in photocatalytic applications. The settling of the microgel-titania composites occurred over minutes and was much faster than solid, impermeable spheres. As the content of TiO2 increased within the particles from 10% to 75%, the increased effective particle density led to significant decrease in the settling time from approximately 2200 seconds to approximately 100 seconds.
摘要翻译：公开了包含聚（N-异丙基丙烯酰胺）交联的热响应微凝胶内的二氧化钛（TiO 2）纳米颗粒的微复合材料。聚（丙烯酸）的互穿线性链将纳米颗粒官能化以在微凝胶框架内扩散。微复合材料显示出快速沉降，其可用于重力分离应用，例如通过光催化降解的环境修复。胶体颗粒内TiO 2的负载程度可以容易地从10％（重量）到高达75％的值。微凝胶 - 二氧化钛复合材料显示出快速沉降，其可用于光催化应用中这些颗粒的重力分离。微凝胶 - 二氧化钛复合材料的沉降发生在几分钟之内，比固体，不渗透球体快得多。随着TiO 2的含量从10％增加到75％，增加的有效颗粒密度导致沉淀时间从大约2200秒显着降低到约100秒。

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