STTR Phase I: UV-Photocatalytic TiO2 Films on Nanosized Ferromagnetic Substrate Particles

STTR 第一阶段：纳米铁磁基底颗粒上的紫外光催化 TiO2 薄膜

• 批准号: 0420047
• 负责人: Karen Buechler
• 金额: $ 10万
• 依托单位: ALD NANOSOLUTIONS, INC.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-01 至 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0420047&HistoricalAwards=false
• 关键词: STTR; Phase; UV; Photocatalytic; TiO2

This Small Business Technology Transfer (STTR) Phase I project provides for the commercialization of composite UV-photocatalytic TiO2 nanofilms deposited by Atomic Layer Deposition (ALD) on nanosized ferromagnetic iron particles. The iron nanoparticles are formed in-situ prior to ALD processing where conformal, pinhole-free, chemically bonded films of TiO2 are deposited on the surface of each individual substrate nanoparticcle. The substrate iron particles maintain a high magnetic moment and are protected from oxidation by the TiO2 film. The novel catalyst particles can be used to passively decontaminate polluted streams and can then be removed magnetically from the decontaminated sites and regenerated for further use. The ALD nanocoating of individual ultrafine particles to control individual ultrafine particle surface chemistry is enabling technology that is unparalleled compared to more conventional CVD, PVD, PE-CVD, or wet chemistry solution processing. It is now possible to produce ultrafine particles with designed electrical, magnetic, optical, mechanical, rheological, or other properties. Markets for such functionalized ultra-fine powders include microelectronics, defense, hardmetals, cosmetics, drug delivery, catalytic materials, energetic materials, and polymer/ceramic nanocomposites, among others.

这个小型企业技术转移（STTR）I期项目提供了通过原子层沉积（ALD）在纳米化铁磁铁颗粒上沉积的复合紫外线催化TIO2纳米膜的商业化。铁纳米颗粒是在ALD加工之前形成的，在ALD加工之前，TiO2的共形，无针孔，化学键合的膜沉积在每个单独的基板纳米核心表面上。底物铁颗粒保持高磁矩，并通过TiO2膜保护不受氧化的保护。新型的催化剂颗粒可用于被动地污染污染的流，然后可以从污染的位点磁磁去除并再生以进一步使用。与更常规的CVD，PVD，PE-CVD或湿化学溶液处理相比，单个超细颗粒以控制单个超细颗粒表面化学的ALD纳米颗粒使得无与伦比的技术是无与伦比的。现在可以生产具有设计的电气，磁性，光学，机械，流变或其他特性的超细颗粒。这种功能化的超细粉末的市场包括微电子，防御，硬质，化妆品，药​​物输送，催化材料，能量材料以及聚合物/陶瓷纳米复合材料等。