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）第一阶段项目提供了通过原子层沉积（ALD）在纳米级铁磁性铁颗粒上沉积的复合uv光催化TiO2纳米膜的商业化。铁纳米颗粒是在ALD处理之前原位形成的，其中在每个单独的衬底纳米颗粒表面沉积了保形的、无针孔的、化学结合的TiO2薄膜。衬底铁颗粒保持高磁矩，并被TiO2膜保护不被氧化。新型催化剂颗粒可用于被动净化被污染的河流，然后可以从被净化的地点磁性去除并再生以供进一步使用。与传统的CVD、PVD、PE-CVD或湿化学溶液处理相比，ALD纳米涂层可以控制单个超细颗粒的表面化学性质，这是一项无与伦比的技术。现在有可能生产出具有设计好的电学、磁学、光学、机械、流变学或其他特性的超细颗粒。这种功能化超细粉末的市场包括微电子、国防、硬质合金、化妆品、药物输送、催化材料、含能材料和聚合物/陶瓷纳米复合材料等。