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CREST-Postdoctoral Research Fellowship:Design of Ag Nanoparticles-Coated ZnO Nanoshells Substrate for the Detection of Contaminants in Water Using Surface-Enhanced Raman Scattering

CREST-博士后研究奖学金：设计银纳米粒子涂覆的氧化锌纳米壳基底，用于利用表面增强拉曼散射检测水中的污染物

基本信息

批准号：
2112537
负责人：
Adrian Camacho-Berrios
金额：
$ 15.91万
依托单位：
Camacho-Berrios, Adrian
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-09-01 至 2023-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2112537&HistoricalAwards=false
关键词：
CREST Postdoctoral Research Fellowship Design

项目摘要

The Centers of Research Excellence in Science and Technology-Postdoctoral Research Fellowship (CREST-PRF) track within the CREST program supports beginning CREST Center investigators with significant potential and provides them with training and research experiences that will broaden perspectives, facilitate interdisciplinary interactions and establish them in positions of leadership within the scientific community. This CREST-PRF project is aligned with the research focus of the CREST Center for Nanotechnology Center for Biomedical, Environmental and Sustainability Applications – Phase II at the University of Puerto Rico Mayaguez. The goal of this research is to develop an inexpensive material which will be useful in detecting water contaminants. The new material will be composed of metal nanoparticles that will enhance signals from these contaminants. The proposed work has the potential to position a new researcher to start an independent research career and become a competitive faculty member. The work also has the potential to create outreach activities for students in Western Puerto Rico public schools. The aim of the proposal is to develop a surface-enhanced Raman scattering (SERS) substrate made of Ag nanoparticle coated ZnO nanoshells through a less expensive methodology capable of being scaled upwards. The SERS substrate will serve to detect emerging contaminants in water, an environmental problem of increasing concern in the U.S. The proposed SERS substrate will be produced in a three-step process that includes the electrospinning of cellulose fibers and the sputtering deposition of ZnO nanoshells and of Ag nanoparticles. These are well known, less expensive techniques that can be used at large scales. The SERS performance will be evaluated as a function of the Ag nanoparticles' size as a function of sputtering time and temperature during post-deposition heat treatment. The detection of emerging pollutants in water at trace levels will assist scientists in implementing quick remediation actions before dangerous consequences to human health and the environment occur. Thus, the proposed nanostructure as SERS substrate will expand the field of detecting trace levels of emerging pollutants in water resources. Through the host scientist's mentoring, the proposer will have an opportunity to be trained as a competitive faculty member and engage in an independent research career. The proposed outreach activities for students in public schools in Western Puerto Rico will focus on the significance of nanotechnology and how it addresses environmental issues such as water contamination.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.

CREST项目中的科学和技术卓越研究中心-博士后研究奖学金(CREST-PRF)轨道为CREST中心具有巨大潜力的初学者提供支持，并为他们提供培训和研究经验，这些培训和研究经验将拓宽视野，促进跨学科互动，并使他们在科学界处于领导地位。该CREST-PRF项目与波多黎各大学CREST纳米技术中心生物医学、环境和可持续发展应用第二阶段的研究重点保持一致。这项研究的目标是开发一种廉价的材料，用于检测水污染物。这种新材料将由金属纳米颗粒组成，它将增强来自这些污染物的信号。这项拟议的工作有可能让一名新的研究人员开始独立的研究生涯，并成为一名有竞争力的教职员工。这项工作还有可能为波多黎各西部公立学校的学生开展外联活动。该提案的目的是通过一种成本较低的方法开发一种表面增强拉曼散射(SERS)基板，该基板由银纳米颗粒包裹的氧化锌纳米壳组成，能够放大。SERS基板将用于检测水中新出现的污染物，这是一个在美国日益受到关注的环境问题。拟议的SERS基板将通过三个步骤生产，其中包括纤维素纤维的静电纺丝和溅射沉积氧化锌纳米壳和银纳米颗粒。这些都是众所周知的、成本较低的技术，可以大规模使用。SERS性能将作为银纳米颗粒尺寸的函数来评估，作为沉积后热处理中溅射时间和温度的函数。在痕量水平检测到水中新出现的污染物将有助于科学家在对人类健康和环境造成危险后果之前实施快速补救行动。因此，拟议的纳米结构作为表面增强拉曼散射衬底将扩大检测水资源中痕量新兴污染物的领域。通过东道主科学家的指导，提名者将有机会接受培训，成为一名有竞争力的教员，并从事独立的研究事业。针对波多黎各西部公立学校学生的拟议外展活动将集中于纳米技术的重要性以及它如何解决水污染等环境问题。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。