CAREER: Homogeneous Solution Phase Synthesis of Nanoscale Materials

职业：纳米材料的均质溶液相合成

• 批准号: 9876164
• 负责人: Michael Wagner
• 金额: $ 39.31万
• 依托单位: George Washington University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-06-01 至 2005-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9876164&HistoricalAwards=false
• 关键词: CAREER; Homogeneous; Solution; Phase; Synthesis

9876164WagnerThe goal of this NSF Career award is to synthesis and characterize novel nanoparticles by Alkalide/Electride reduction. The nucleation and growth of the particles will be studied by stopped-flow spectroscopy. Parameters which affect mean size and polydispersity will be investigated. This data will be essential to extend the method to "shell-core" bi-metal particle synthesis and large scale flow synthesis. The reductions will be extended to higher order phases, specifically binary non-oxide ceramics. This work will be part of a program of strong integration of research and coursework in materials chemistry for undergraduates. Additionally, the PI will begin to develop a more unified approach to Physical Chemistry laboratory, in which experiments are strongly linked within the context of the lab and with the lecture to provide continuity of learning. Senior undergraduates interested in chemical education will help design and implement the course. Finally, the PI will continue his active role as a Freshman Workshop leader, mentoring students prior to their choice of major, easing the transition to college and putting a "human" face on science.%%%Alkalide/electride reduction is an uniquely powerful method of synthesizing nanomaterials, general across the entire periodic table. This homogeneous solution phase method overcomes the slow interdiffusion typical of solid state synthesis at ambient and below, and thus is not limited to high temperature, thermodynamic phases. The research proposed here promises not only to make technologically important materials in the short term, but the methodology developed may open the door to a vast array of as yet undiscovered novel metastable and low temperature thermodynamically stable materials.***

9876164 Wagner这个NSF职业奖的目标是通过碱化物/电解质还原合成和表征新型纳米颗粒。 颗粒的成核和生长将通过停流光谱进行研究。 将研究影响平均尺寸和多分散性的参数。 这些数据将是必不可少的方法扩展到“壳-芯”双金属颗粒合成和大规模流动合成。 减少将扩展到更高阶的阶段，特别是二元非氧化物陶瓷。 这项工作将成为本科生材料化学研究和课程整合计划的一部分。 此外，PI将开始制定一个更统一的方法来物理化学实验室，其中实验在实验室的背景下，并与讲座紧密相连，以提供学习的连续性。 对化学教育感兴趣的高年级本科生将帮助设计和实施课程。 最后，PI将继续作为新生研讨会领导者的积极作用，在学生选择专业之前指导他们，缓解向大学的过渡，并在科学上加入“人性化”的面孔。碱金属/碱土金属还原是合成纳米材料的一种独特而强大的方法，在整个周期表中都是通用的。 该均相溶液相方法克服了在环境温度和低于环境温度下固态合成的典型的缓慢相互扩散，因此不限于高温、热力学相。 这里提出的研究不仅有望在短期内制造出技术上重要的材料，而且所开发的方法可能会为大量尚未发现的新型亚稳态和低温热稳定材料打开大门。