Induced Electrodeposition of Molybdenum and Tungsten Alloys

东北大学的Elizabeth J. Podlaha教授得到化学系化学催化项目的支持，研究从水溶液中诱导钼和钨合金电化学共沉积的机制，并在纳米线结构中使用这些合金催化电解制氢。合金将在光电化学激发下还原，并且将表征所得存款的组成。机制将通过阻抗技术，包括强度调制光电流和强度调制光电压光谱检查，和存款的结构将通过表面分析方法的特点。将建立预测存款成分的数学模型。电沉积对磁性数据存储和计算机技术做出了巨大贡献，但它正在成为一种独特的方法，用于制造基于纳米技术的未来经济所需的材料和结构。 虽然电化学沉积已经使用了很长时间，但在原子水平上的电沉积机制并不清楚。学生将接受电化学沉积和催化方面的培训，并将开发一个网站来演示高中学生的电沉积。

Professor Elizabeth J. Podlaha of Northeastern University is supported by the Chemical Catalysis Program in the Division of Chemistry to study the mechanisms of induced electrochemical codeposition of molybdenum and tungsten alloys from aqueous solutions, and to use these alloys in a nanowire architecture to catalyze electrolytic hydrogen production. The alloys will be reduced under photoelectrochemical excitation and the composition of the resulting deposit will be characterized. The mechanisms will be examined by impedance techniques, including intensity-modulated photocurrent and intensity-modulated photovoltage spectroscopy, and the structure of the deposit will be characterized by surface analytical methodologies. A mathematical model to predict deposit composition will be developed. Electrodeposition has contributed greatly to magnetic data storage and computer technology, but it is emerging as a uniquely capable method for making materials and structures needed for a nanotechnology-based future economy. Although electrochemical deposition has been utilized for a very long time, the mechanisms of electrodeposition at the atomic level are not clearly understood. Students will be trained in electrochemical deposition and catalysis, and a website will be developed to demonstrate electrodeposition for high school students.