Understanding the Microwave Absorption of Hydrogenated TiO2 Nanoparticles

了解氢化 TiO2 纳米粒子的微波吸收

• 批准号: 1609061
• 负责人: Xiaobo Chen
• 金额: $ 30.82万
• 依托单位: University of Missouri-Kansas City
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-06-01 至 2020-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1609061&HistoricalAwards=false
• 关键词: Understanding; Microwave; Absorption; Hydrogenated; TiO2

Nontechnical description: This project is focused on the effect of hydrogenation on the microwave absorption properties of titanium dioxide nanoparticles. These nanoparticles have the potential to advance the field of microwave absorption, leading to a number of practical applications in areas such as telecommunication, spacecraft communication, wireless communication, radar detection, satellite navigation, etc. The research team aims to understand the underlying mechanisms of how hydrogenation affects the microwave absorption of inorganic nanoparticles with various phase compositions and surface morphologies. The principal investigator provides training opportunities for graduate and undergraduate students and popularizes his research efforts and results via various outreach activities, reaching to the local community and underrepresented groups. He develops online courses focused on electronic and photonic properties of these materials, which are available to the public. Technical description: This project tackles newly observed phenomena by the PI's group of significantly increased microwave absorption in hydrogenated titanium dioxide nanoparticles that cannot be explained with traditional mechanisms. The project goal is to reveal the underlying mechanisms and to elucidate the effects of hydrogenation by comprehensive approach, studying structural, chemical, optical, electronic, dielectric and microwave absorption properties by employing various characterization methods such as X-ray diffraction, high-resolution transmission electron microscopy, Raman spectroscopy, ultraviolet-visible absorption spectroscopy, Fourier transform infrared spectroscopy, (valence band) X-ray photoelectron spectroscopy, and a transmission line technique with a network analyzer. The project integrates the research activities with educational opportunities for graduate, undergraduate and high-school students.

非技术描述：该项目集中于氢化对二氧化钛纳米颗粒微波吸收特性的影响。这些纳米颗粒有可能进步微波吸收领域，从而在电信，航天器通信，无线通信，雷达检测，卫星导航等领域进行了许多实际应用。研究团队旨在了解水保化的潜在机制如何影响层次的层压层置换层置换。首席研究人员为研究生和本科生提供培训机会，并通过各种外展活动对他的研究工作和结果进行了推广，到达当地社区和代表性不足的群体。他开发了专注于这些材料的电子和光子性能的在线课程，这些材料可供公众使用。技术描述：该项目解决了PI的二氧化钛二氧化钛纳米颗粒中的微波吸收群的新现象，无法用传统机制来解释。 The project goal is to reveal the underlying mechanisms and to elucidate the effects of hydrogenation by comprehensive approach, studying structural, chemical, optical, electronic, dielectric and microwave absorption properties by employing various characterization methods such as X-ray diffraction, high-resolution transmission electron microscopy, Raman spectroscopy, ultraviolet-visible absorption spectroscopy, Fourier transform infrared spectroscopy, （价频段）X射线光电子光谱和带网络分析仪的传输线技术。该项目将研究活动与研究生，本科和高中生的教育机会融合在一起。