U.S.-Egypt Cooperative Research: Synthesis of Nanocrystalline Sensing Oxides

美埃合作研究：纳米晶传感氧化物的合成

• 批准号: 0413961
• 负责人: Hendrik Verweij
• 金额: --
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 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: 2004-09-01 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0413961&HistoricalAwards=false
• 关键词: U.S.; Egypt; Cooperative; Research; Synthesis

0413961VerweijDescription: This award is to support a cooperative research project between Dr. Hendrik Verweij, Department of Materials Sciences and Engineering, Ohio State University, Columbus, Ohio and Dr. Emad El-Meliegy, Department of Ceramics, National Research Center, Cairo, Egypt. They aim to synthesize nanocrystalline gas sensing oxide, particularly doped titanium oxides via sol-gel route. The morphology and microstructure of oxides will be controlled to suit their use as a sensor for internal combustion engine exhaust gases. The sensing oxides will be used to determine the air/fuel ratio or the oxygen/unburned or partially burned hydrocarbon ratio in the exhaust emissions in order to improve the automobile efficiency. The synthesized nanocrystalline sensing oxides are expected to be on the order of 1-100 nm. They are expected to be of high purity and agglomerate free with narrow to uniform particle size distribution and can be sintered to ideal compact with uniform three-dimensional structure. The investigators plan to address problems in traditional sensors that occur as a result of the severe conditions in the internal combustion engine exhaust gases, such as chemical stability, mechanical shock, and cracking. Also, the problems that arise during the synthesis of nanocrystalline sensing oxides, such as high costs, low yield, lack of morphology control (grain size, shape and size distribution), purity of nanopowders, powder agglomeration and environmental safety, will be addressed to optimize synthesis conditions. Essential sensor performance parameters such as stability, sensitivity, and selectivity are expected to be greatly improved by the use of the nanocrystalline sensing oxides with novel characteristics in sensors construction. This research will address the need for synthesis of nanocrystalline sensing oxides and the need for further detailed analysis of the morphology, microstructure and chemistry of these oxides.Scope and broad impact: The project is expected to lead to sensing devices that will help the automobile industry cut air pollution emissions from automobiles. It is expected that more stable and less expensive sensors for air and other gases will be developed which can be used for similar applications. This project is being supported under the US-Egypt Joint Fund Program, which provides grants to scientists and engineers in both countries to carry out these cooperative activities.

0413961 Verweij描述：该奖项旨在支持俄亥俄州哥伦布市俄亥俄州州立大学材料科学与工程系Hendrik Verweij博士和埃及开罗国家研究中心陶瓷系Emad El-Meliegy博士之间的合作研究项目。 他们的目标是通过溶胶-凝胶法合成纳米晶气敏氧化物，特别是掺杂钛氧化物。氧化物的形态和微观结构将被控制，以适合它们用作内燃机废气的传感器。传感氧化物将用于确定废气排放中的空气/燃料比或氧/未燃烧或部分燃烧的碳氢化合物比，以提高汽车的效率。所合成的纳米晶敏感氧化物预期在1-100 nm的量级。预期它们具有高纯度和无团聚体，具有窄至均匀的粒度分布，并且可以烧结成具有均匀三维结构的理想压块。 研究人员计划解决传统传感器因内燃机废气中的恶劣条件而出现的问题，如化学稳定性，机械冲击和开裂。此外，纳米晶敏感氧化物的合成过程中出现的问题，如高成本，低产量，缺乏形态控制（晶粒尺寸，形状和尺寸分布），纳米粉末的纯度，粉末团聚和环境安全，将得到解决，以优化合成条件。 基本的传感器性能参数，如稳定性，灵敏度和选择性，预计将大大提高使用的纳米晶敏感氧化物在传感器的建设与新的特点。该研究将解决纳米晶传感氧化物的合成需求，以及对这些氧化物的形态、微观结构和化学性质进行进一步详细分析的需求。范围和广泛影响：该项目预计将导致传感设备，帮助汽车工业减少汽车的空气污染排放。 预计将开发出更稳定和更便宜的空气和其他气体传感器，可用于类似的应用。 该项目得到了美国-埃及联合基金方案的支持，该方案向两国的科学家和工程师提供赠款，以开展这些合作活动。