CAREER: Hybrid Nanostructures as Catalysts for Advanced Oxidation Processes: An Integrated Research and Education Plan Promoting Water Reuse and Sustainability

职业：混合纳米结构作为高级氧化过程的催化剂：促进水再利用和可持续性的综合研究和教育计划

• 批准号: 1243473
• 负责人: David Cwiertny
• 金额: $ 30.95万
• 依托单位: University of Iowa
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-10-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1243473&HistoricalAwards=false
• 关键词: CAREER; Hybrid; Nanostructures; Catalysts; Advanced

It is a challenge for arid regions like southern California to develop and maintain a reliable domestic drinking water supply in light of projected population increases in the regions and presently overdrawn groundwater basins, drought, and climate change which is slated to reduce the Sierra snowpack by 40% by 2050. In California, this will require an increase in the treatment and reuse of municipal wastewater, much of which contains a plethora of organic pollutants such as hormones, pharmaceuticals, and endocrine-disrupting compounds. This research implements a novel approach to trapping and rendering harmless these compounds by exploring the potential of functionalized carbon nanotubes as tunable ozonation catalysts to degrade these and other organic pollutants. The benefit of this approach is that the nanotubes can be functioned into activated filters and membranes. A main goal of the research is to generate structure-activity relations to guide future design of hybrid nanomaterials for water purification. To achieve this, synthesis and detailed characterization of the functionalized carbon nanotubes and hybrid nanostructures in terms of their bulk structure and morphology, chemical composition, surface chemistry, and solution phase stability will be carried out using a wide array of state-of-the-art tools such as XPS and ATR-FTIR. Characterization will be followed by reactivity and performance testing in closed batch reactor systems using a range of model pollutants and chemistries relevant to water and wastewater treatment. Performance testing includes examination of the influence of matrix chemistry, how effective the nanomaterials are in removing organic matter in the effluent, mitigation of oxidation bi-products, and removal of dissolved organic carbon from secondary effluents. The broader impacts include societal benefits in the form of providing more reliable, safe, and sustainable water supplies. It will support an early career faculty member and train doctoral students at the host institution and one community college student from nearby Hispanic Serving Institution, Cal Poly Pomona. Students will be engaged in multi-disciplinary research that fosters an appreciation for the responsible development and use of nanomaterials. Efforts will be made to recruit students from groups traditionally under-represented in STEM fields to promote greater diversity in the science and technology workforce. Project outcomes will be incorporated into two undergraduate courses associated with the Nanotechnology major at the University of California, Riverside and will be disseminated to other University of California campuses. The project will also carry out an outreach program to raise public awareness and understanding of regional and global water crises.

对于南加州等干旱地区来说，鉴于预计的人口增加并目前越过地下水盆地，干旱和气候变化，这是一个挑战。激素，药物和内分泌干扰化合物。 这项研究通过探索功能化碳纳米管的潜力作为可调节的臭氧化催化剂来降解这些和其他有机污染物，从而实现了一种新颖的方法来捕获和渲染这些化合物。 这种方法的好处是，纳米管可以在活化的过滤器和膜中运行。 该研究的主要目的是产生结构活性关系，以指导混合纳米材料的未来设计以进行净化。 为了实现这一目标，将使用诸如XPS和Atr-FTIR等各种最新的工具来实现功能化碳纳米管和杂化纳米结构的合成和杂种纳米结构的综合表征。 表征将使用与水和废水处理相关的一系列模型污染物和化学物质进行封闭批处机反应堆系统中的反应性和性能测试。 性能测试包括检查基质化学的影响，纳米材料在去除有机物中的有效性，减轻氧化二线生产物以及从次生废水中溶解有机碳的去除。 更广泛的影响包括提供更可靠，安全和可持续水供应的形式的社会利益。 它将在东道国机构的早期职业教师和培训博士生培训博士生，以及附近西班牙裔服务机构Cal Poly Pomona的一名社区大学生。学生将参与多学科研究，以促进对负责任的纳米材料的负责发展和使用。 将努力从传统上在STEM领域招募学生，以促进科学和技术劳动力中的更多多样性。 项目成果将被纳入与加利福尼亚大学河滨分校的纳米技术专业有关的两个本科课程中，并将被传播到加利福尼亚大学的其他校园。该项目还将执行一项外展计划，以提高公众对区域和全球水危机的认识和理解。