Molecular Level Effects for Simple Electrode Reactions at Well Defined Polarizable Electrodes

明确的可极化电极上简单电极反应的分子水平效应

• 批准号: 0451103
• 负责人: W. Ronald Fawcett
• 金额: $ 43.84万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-03-01 至 2008-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0451103&HistoricalAwards=false
• 关键词: Molecular; Level; Effects; Simple; Electrode

Professor W. Ronald Fawcett of the University of California-Davis is performing experimental work to elucidate molecular effects in interfacial electrochemistry. His project is developing new methods for the growth and isolation of micron-scale single crystal surfaces that are enabling the study of double layer effects on very fast electron transfer reactions whose kinetics may not be measured at electrodes of macroscale dimensions. High frequency voltammetry techniques are being applied to investigate limitations to electron transfer related to interfacial structure and charge and reorganization of solvent. Reactions involving complex ions in solution and underpotential deposition processes are emphasized. In addition, quantum chemical calculations are being performed to evaluate the charge distribution within polyatomic reactants for improved assessment of the magnitude of double layer corrections. Other areas under study include double layer structure in the presence of divalent ions and diffuse layer properties at self assembled monolayer modified electrodes. Advances being made by the Fawcett group are contributing new techniques to support investigations of heterogeneous electron transfer. These reactions impact a broad range of processes, including corrosion, metal deposition, energy conversion and the operation of chemical sensors.

加州戴维斯大学的W. Ronald Fawcett教授正在从事实验性工作，以阐明界面电化学的分子效应。 他的项目正在开发新的方法，用于生长和分离微米尺度的单晶表面，这些方法可以研究对非常快的电子传递反应的双层影响，这些反应可能无法在宏观尺寸的电极上测量其动力学。 高频伏安法技术正在应用于研究与界面结构以及溶剂的电荷和重组有关的电子转移的局限性。 强调了涉及溶液和宽大沉积过程中复杂离子的反应。 另外，正在进行量子化学计算，以评估多原子反应物中的电荷分布，以改善对双层校正幅度的评估。 研究的其他区域包括在二价离子存在下的双层结构和自组装单层修饰电极处的弥散层性能。 Fawcett组取得的进步正在为支持异质电子转移的研究提供新技术。 这些反应会影响广泛的过程，包括腐蚀，金属沉积，能量转化和化学传感器的运行。