CAS: REGENERABLE POLYMERS FOR PHOSPHATE REMOVAL AND RECOVERY FROM WASTEWATER

CAS：用于废水中磷酸盐去除和回收的可再生聚合物

• 批准号: 2203624
• 负责人: Valerie Pierre
• 金额: $ 45万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-12-01 至 2025-11-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2203624&HistoricalAwards=false
• 关键词: CAS; REGENERABLE; POLYMERS; PHOSPHATE; REMOVAL

With the support of the Macromolecular, Supramolecular and Nanochemistry (MSN) program in the Division of Chemistry, Professor Valerie Pierre of the University of Minnesota will be developing polymer-supported receptors that capture and release phosphate reversibly as needed for remediation and purification of waste water and for recycling phosphate—a critical resource needed to secure our food supply. Professor Pierre and her research team aim to synthesize and study polymers and receptors that function as sponges, capturing the phosphate from polluted water selectively and then releasing it upon addition of stimuli such as light or pressure. This controlled reversibility is designed to enable separation and recovery of phosphate and reagent-less recovery of smart receptors. This interdisciplinary research project will provide training opportunities to undergraduate and graduate students across a range of useful skills, including chemical synthesis, polymer characterization, and analytical studies of the receptor-phosphate binding. Broader impacts of the project also include the development and evaluation of new hands-on activities for middle schools, with the goal of increasing interest in science and the research enterprise in students early in their education.The Pierre research team seeks to develop a general strategy based on allosteric electrostatic interactions to render receptors for ions responsive to external stimuli. A unique aspect of these receptors is their ability to release their guests on demand upon addition of an external physical or chemical stimulus. The catch-and-release properties of such designed receptors rely on reversible chemical reactions, such as those governed by light, redox potential, temperature, and pressure. This controlled reversibility is expected to enable separation followed by controlled recovery of phosphate and reagent-less recovery of receptors supported on smart polymers. This approach broadens the capabilities of supramolecular ion receptors by enabling them to release the guests up a concentration gradient. The Minnesota research team further seeks to combine the strength of supramolecular chemistry with that of polymer science to enable solid support control of the behavior of the supported receptors.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在化学系大分子，超分子和纳米化学（MSN）计划的支持下，明尼苏达大学的Valerie Pierre教授将开发聚合物支持的受体，这些受体可以根据需要可逆地捕获和释放磷酸盐，用于废水的修复和净化以及回收磷酸盐-确保我们的食物供应所需的关键资源。皮埃尔教授和她的研究团队的目标是合成和研究具有海绵功能的聚合物和受体，选择性地从污染的水中捕获磷酸盐，然后在添加光或压力等刺激时释放它。这种受控的可逆性旨在实现磷酸盐的分离和回收以及智能受体的无试剂回收。这个跨学科的研究项目将为本科生和研究生提供一系列有用技能的培训机会，包括化学合成，聚合物表征和受体磷酸盐结合的分析研究。 该项目的更广泛影响还包括为中学开发和评估新的实践活动，目的是提高学生在教育早期对科学和研究企业的兴趣。Pierre研究团队寻求开发一种基于变构静电相互作用的通用策略，使离子受体对外部刺激做出反应。这些受体的一个独特的方面是它们能够在添加外部物理或化学刺激后按需释放它们的客人。这种设计的受体的捕获和释放特性依赖于可逆的化学反应，例如受光、氧化还原电位、温度和压力控制的化学反应。这种受控的可逆性预期能够实现分离，随后是磷酸盐的受控回收和智能聚合物上支持的受体的无试剂回收。这种方法通过使超分子离子受体能够在浓度梯度上释放客体来拓宽超分子离子受体的能力。明尼苏达州的研究团队进一步寻求联合收割机的超分子化学与聚合物科学的结合，使支持受体的行为的固体支持控制。该奖项反映了NSF的法定使命，并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。