U.S. - Egypt Cooperative Research: Synthesis and Characterization of Novel Nanostructured Sensors

项目描述：本项目支持里士满弗吉尼亚联邦大学化学系的Mohamed Samy El-Shall博士和赫尔万中央冶金研究与发展研究所（CMRDI）的Osama Fouad博士的合作研究。他们将研究纳米结构ZnO， SnO2半导体及其复合材料作为气体传感器材料的制备和表征。大多数冶金工业和其他一些工业也使用或产生空气污染物气体。在大多数情况下，这些气体的浓度超过了允许的水平。环境污染和各种有害气体污染是直接影响人类健康的严重问题，对社会的技术和经济进步会产生重大影响。开发新型超灵敏气体传感器的挑战可以通过利用半导体纳米材料独特的物理和化学性质来解决。该项目涉及新型纳米结构气体传感器的开发，旨在监测并最终减少环境污染。该项目将美国VCU开发的激光方法与埃及CMRDI开发的化学冶金和自旋涂层方法相结合，合成并表征了一种新的混合氧化物纳米线和锌锡氧化物薄膜，作为新型气体传感器材料。知识价值：通过对纳米结构传感器的尺寸、组成、掺杂剂和表面性质的精确控制，本研究将为选择性高灵敏度气体传感器的开发提供有力的途径。提出的研究也将导致更好地理解控制纳米结构气体传感器的选择性和灵敏度的因素。更广泛的影响：成功的结果可能会为埃及和美国的工业和商业部门的各种环境应用启动新的努力，并可能导致两国的经济发展。此外，该项目对纳米材料、气体传感器、环境化学和材料科学等多学科研究领域的研究生和初级科学家的教育和培训具有广泛的意义。这项研究将为埃及科学界介绍纳米结构材料的新研究领域。这有望在先进材料、传感器和设备方面开辟新的研究领域。该项目得到了美国-埃及联合基金项目的支持，该项目向两国的科学家和工程师提供赠款，以开展这些合作活动。

0519425ElShallProject Description: This project supports a collaborative research between Dr. Mohamed Samy El-Shall, Department of Chemistry at Virginia Commonwealth University (VCU), Richmond and Dr. Osama Fouad, Central Metallurgical Research and Development Institute (CMRDI), Helwan. They will study the preparation and characterization of nanostructured ZnO, SnO2 semiconductors and their composites as gas sensor materials. Most of the metallurgical industries and some other industries as well use or produce gases that are air pollutants. In most cases the concentrations of these gases exceed the permitted levels. Environmental pollution and contamination by various harmful gases is a serious problem that directly affects human health, and it can have significant impact on the technological and economic progress of society. The challenge of developing novel ultra sensitive gas sensors could be met by exploiting the uniquesize-dependent physical and chemical properties of semiconductor nanoscale materials. This project deals with the development of new types of nano-structured gas sensors aimed at monitoring and consequently minimizing environmental pollution. The project combines the laser methods developed at VCU in the USA with the chemical-metallurgical and spin coating methods developed at the CMRDI in Egypt, to synthesize and characterize a new family of nanowires of mixed oxides and thin films of zinc and tin oxides as novel gas sensor materials.Intellectual Merit: It is expected that, with the precise control of the size, composition, dopants and surface properties of the nano-structured sensors, this research will lead to a powerful approach for the development of selective highly sensitive gas sensors. The proposed research will also result in a better understanding of the factors that control the selectivity and sensitivity of nanostrucured gas sensors.Broader Impact: Successful results will likely initiate new efforts for a variety of environmental applications involving both the industrial and commercial sectors in Egypt and the US, and can lead to economic development in both countries. In addition, the project has broad implications in the education and training of graduate students and junior scientists in the multi-disciplinary research areas of nanomaterials, gas sensors, environmental chemistry, and materials science. The research will introduce new areas of research on nanostructure materials to the Egyptian scientific community. This is expected to open new fields of research with promising applications in advanced materials, sensors and devices. 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.