SusChEM: Collaborative Research: Development and Application of Piezoelectric Nanoheterostructures to Reduce the Chemical and Energy Demand of Water Treatment

SusChEM：合作研究：压电纳米异质结构的开发和应用，以减少水处理的化学和能源需求

• 批准号: 1437122
• 负责人: David Cwiertny
• 金额: $ 14.13万
• 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: 2014
• 资助国家: 美国
• 起止时间: 2014-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1437122&HistoricalAwards=false
• 关键词: SusChEM; Collaborative; Research; Development; Application

Shuai1437989Cwiertny1437122Nam1437923SusChEM: Collaborative Research: Development and Application of Piezoelectric Nanoheterostructures to Reduce the Chemical and Energy Demand of Water TreatmentWater and wastewater treatment account for approximately 5 % of all of the energy consumption in the US. Therefore, in response to the tremendous chemical and energy demands associated with clean water production, this project will develop nanostructured piezoelectric catalysts for converting the abundance of waste mechanical energy available in water treatment (e.g., pump vibrations) into useable forms of chemical energy for pollutant degradation. The scientific goals are coupled to educational goals are to train three graduate and several undergraduate students at the interface of catalysis, environmental chemistry, nanotechnology, materials science and sustainability science, helping better prepare the research leaders of tomorrow to address the complex, multi-faceted problems posed by the energy-water nexus. The education and outreach initiatives center on underrepresented groups in STEM and K-12, promoting their involvement in research activities at the George Washington University (GW), U.C. Riverside (UCR; a Hispanic serving institution (HSI)), and the University of Iowa (UI). This includes an undergraduate research partnership between UCR and Cal Poly Pomona (a primarily undergraduate institution and HSI), and PI involvement in existing mentoring activities at GW (School Without Walls) and UI (Summer Research Opportunities Scholars Program).The motivation for this study is the overriding hypothesis that inefficiencies in current piezocatalysts can be overcome by the smart design of one-dimensional (1D) hybrid nanostructures optimized for (i) potential and current generation via the direct piezoelectric effect and (ii) efficient piezogenerated charge separation via co-catalysts that promote ROS production. The research plan centers on two main tasks to (i) rationally design, fabricate and optimize the performance of piezoelectric catalysts, and (ii) demonstrate their application as versatile, next-generation technologies for pollutant oxidation, disinfection, antimicrobial surfaces, and chemically reactive filtration membranes. The studies proposed will focus primarily on a novel class of composite nanofibers prepared via electro-spinning that blend the resiliency and strength of polymeric piezoelectric materials (e.g., PVDF) with more reactive inorganic phases (e.g., ZnO, BaTiO3) that are otherwise too rigid and chemically less stable to function as stand-alone piezocatalysts. This work is potentially transformative in that catalytic nanofiber platforms developed will provide a more sustainable route to advanced oxidation processes (AOPs) and membrane filtration, high performance technologies that currently are limited in application due to concerns associated with their chemical demand, cost and carbon footprint.

SHUAI1437989CWIERTNY1437122NAM1437923SUSCHEM：协作研究：压电纳米层结构的开发和应用，以减少水处理水和废水处理的化学和能源需求，占美国能源消耗的5％。因此，为了应对与清洁水生产相关的巨大化学和能源需求，该项目将开发纳米结构化的压电催化剂，以将水处理中可用的大量废物机械能（例如泵振动）转化为可用的化学能量形式，以降解污染物降解。 科学目标是与教育目标结合在一起的是在催化，环境化学，纳米技术，材料科学和可持续性科学的界面上培训三个研究生和几名本科生，并帮助明天的研究领导者做好准备，以解决明天的研究领导者，以解决能源 - 沃特 - 沃特·尼克斯（Nexus）提出的复杂的，多面的问题。教育和宣传计划集中在STEM和K-12中代表性不足的群体中，促进了美国乔治华盛顿大学（GW）的研究活动。河滨（UCR；西班牙裔服务机构（HSI））和爱荷华大学（UI）。这包括UCR和Cal Poly Pomona（主要是本科机构和HSI）之间的本科研究伙伴关系，以及PI参与GW（没有墙壁的学校）和UI（夏季研究机会学者计划）的现有指导活动。该研究的动机是在当前的效率下，这是一项效率的假设，即在当前的效率上，这是一位效率的效果，而这是一位精通效果，并且是一位效率的设计。通过直接的压电效应和（ii）通过促进ROS产生的共催化剂来优化了针对（i）对（i）电位和当前产生优化的杂种纳米结构。该研究计划集中在（i）合理设计，制造和优化压电催化剂的性能的两项主要任务上，并且（ii）证明了它们作为多功能，下一代污染物氧化，消毒，抗药性，抗药性表面和化学反应性滤液滤镜的应用。提出的研究将主要集中在通过电旋转制备的新型复合纳米纤维融合到聚合物压电材料（例如PVDF）的弹性和强度，而不是反应性的无机相（例如，Zno，batio，batio3），这些相位又太僵硬，否则是较差的，并且在化学上是较低的，并且在化学上是稳定的，并且可以像固定型对立式求职者一样。这项工作具有潜在的变革性，因为开发的催化纳米纤维平台将为高级氧化过程（AOPS）和膜过滤提供更可持续的途径，由于与其化学需求，成本和碳足迹相关的担忧，目前在应用方面受到限制的高性能技术。