U.S.-EGYPT Cooperative Research: Magnetic Nano-Composite as Photocatalyst Prepared by the Sol-Gel Technique for Degradation of Organic Dyes

美国-埃及合作研究：溶胶-凝胶技术制备磁性纳米复合材料作为光催化剂降解有机染料

• 批准号: 0809185
• 负责人: Wolfgang Sigmund
• 金额: $ 3万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0809185&HistoricalAwards=false
• 关键词: U.S.; EGYPT; Cooperative; Research; Magnetic

0809185SigmundThis project supports collaborative research by Dr. Wolfgang Sigmund, Department of Materials Science and Engineering, University of Florida, Gainesville and Dr. Reda Ouf, Central Metallurgical Research and Development Institute (CMRDI), Helwan, Egypt. The objective of this project is a study on ?Magnetic Nano-composite as Photocatalysts Prepared by Sol-Gel Technique for Degradation of Organic Dyes?. Technical Merit: The pollution of water resources by sewage and industrial wastes with toxic or organic compounds presents a serious problem. TiO2 nanoparticles have large specific surface areas and high catalytic performance allow reactions to convert these compounds in presence of UV light on their surface. However, their effective commercial applications are hindered by two serious disadvantages. The first is the agglomeration of the nano-powders resulting in an adverse effect on catalyst performance. The second is the separation and recovery of TiO2 nano-powders from wastewater is difficult. The aim of this project is to develop a photocatalyst that is magnetic, photoactive, and stable using a wet synthesis method, for easy removal and recovery from slurry-type photoreactor. Specific aims include: (i) developing a reproducible synthesis method based on the sol-gel process for preparing magnetic photocatalyst, by coating a magnetic material with TiO2; (ii) characterizing the physical and chemical properties of the prepared samples, and (iii) studying their photocatalytic performance by degrading dye as the model organic compound The intellectual merit of this proposal is an enhanced understanding of magnetic photocatalytic nanocomposites for degradation of organic compounds that might be useful for environmental remediation.Broader Impact: The broader impact is the education of graduate and undergraduate students in the U.S. and the education of young Egyptian researchers thus fostering the international bondsbetween Egypt and the US. Furthermore, the exchange program will provide a scientificand cultural experience for the US undergraduate and graduate students that allows them to grow into teachers for other US students and bring international experience to the companies or government units that they will work with in the future. Additionally, the photocatalysts, if proven successful, can be applied in the U.S., in Egypt or other developing countries to purify water and remediate the environment. 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.

0809185SigmundThis项目支持佛罗里达大学材料科学与工程系Wolfgang Sigmund博士，盖恩斯维尔大学和中央冶金研究与开发研究所（CMRDI）的Reda Ouf博士，埃及，埃及。 该项目的目的是对磁性纳米复合材料作为通过Sol-Gel技术制备的光催化剂的研究，以降解有机染料？技术优点：污水和有机化合物的污水和工业废物对水资源的污染提出了一个严重的问题。 TiO2纳米颗粒具有较大的特定表面积，高催化性能使反应可以在其表面上存在紫外线的情况下转换这些化合物。但是，它们的有效商业应用受到两个严重缺点的阻碍。首先是纳米蛋黄的聚集，从而对催化剂性能产生不利影响。第二个是困难的TiO2纳米储料机的分离和恢复很困难。该项目的目的是开发一种使用湿合成方法的磁性，光活性和稳定的光催化剂，以便于从浆液型光反应器中恢复。具体目的包括：（i）基于用于制备磁光催化剂的溶胶 - 凝胶过程，通过将磁性材料涂在TiO2中，开发可重复的合成方法； （ii）表征准备好样品的物理和化学特性，（iii）通过将染料降解为模型有机化的染色器来研究它们的光催化性能。该建议的智力优点是对磁光催化纳米复合材料的理解增强，以降低了对环境的降级和范围的影响。以及年轻的埃及研究人员的教育，从而促进了埃及与美国之间的国际纽带。 此外，交流计划将为美国的本科生和研究生提供科学和文化经验，使他们能够为其他美国学生成长为教师，并为他们将来将与之合作的公司或政府单位带来国际经验。此外，如果被证明成功的光催化剂可以在美国，埃及或其他发展中国家应用，以净化水和补救环境。 该项目得到了美国埃及联合基金计划的支持，该计划为两国的科学家和工程师提供了这些合作活动的赠款。