CAREER: Electron-Transfer Kinetics of Individual Semiconductor Nanoparticles

职业：单个半导体纳米粒子的电子转移动力学

• 批准号: 1255387
• 负责人: Mario Alpuche Aviles
• 金额: $ 65万
• 依托单位: Board of Regents, NSHE, obo University of Nevada, Reno
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-02-01 至 2020-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1255387&HistoricalAwards=false
• 关键词: CAREER; Electron; Transfer; Kinetics; Individual

Dr. Mario A. Alpuche-Aviles of the Department of Chemistry at the University of Nevada, Reno, is supported by a Career Award from the Macromolecular, Supramolecular and Nanochemistry (MSN) program in the NSF Division of Chemistry. The research being conducted involves nanoparticle electron transfer reactions that are of importance in photocatalysis, a process that enables conversion of light into chemical energy. New approaches to their study are being developed with potential application in the design of more efficient energy conversion schemes based on photocatalysis of semiconductor nanoparticles in solution. The long-term goal of the project is to understand the interdependence between photocatalytic properties of semiconductor nanoparticles and nanoparticle size and shape. These photocatalytic properties will be determined from interactions between semiconductor nanoparticles and electrodes with diameter of a few micrometers or less. The work includes (1) measuring photoelectrochemical electron transfer rates of individual nanoparticles; (2) correlating the intrinsic nanoparticle activity with nanoparticle structure; (3) developing computer models of the interactions between colloidal nanoparticles and the working electrode. Subsequent refinements of the methodology will include studies of reactions that hinder efficiency because they compete with the desired photoelectrochemical reactions for energy conversion.Dr. Alpuche will encourage students to consider careers in the science, technology, engineering, and mathematics (STEM) fields through the development of hands-on activities for K-12 level. This includes outreach to Hispanic population of Nevada with presentations at K-12 schools with large Hispanic populations.

Mario A.博士位于里诺的内华达州大学化学系的Alpuche-Aviles获得了NSF化学部大分子、超分子和纳米化学（MSN）项目的职业奖。正在进行的研究涉及纳米粒子的电子转移反应，这在光化学中非常重要，这是一个将光转化为化学能的过程。新的方法，他们的研究正在开发与潜在的应用在设计更有效的能量转换方案的基础上半导体纳米粒子在溶液中的结晶。 该项目的长期目标是了解半导体纳米颗粒的光催化性能与纳米颗粒尺寸和形状之间的相互依赖关系。 这些光催化性能将通过半导体纳米颗粒与直径为几微米或更小的电极之间的相互作用来确定。工作包括（1）测量单个纳米颗粒的光电化学电子转移速率;（2）将纳米颗粒的固有活性与纳米颗粒结构相关联;（3）开发胶体纳米颗粒与工作电极之间相互作用的计算机模型。 该方法的后续改进将包括研究阻碍效率的反应，因为它们与所需的光电化学反应竞争能量转换。Alpuche博士将鼓励学生通过开发K-12水平的实践活动来考虑科学，技术，工程和数学（STEM）领域的职业生涯。这包括外展到内华达州的西班牙裔人口与介绍在K-12学校与大量的西班牙裔人口。