The Stability of Colloidal Metallic Nanoparticles in Reactive Chemical Environments

过渡金属纳米颗粒的合成和表征是该研究项目的重点，该研究项目由格鲁吉亚理工学院的共同研究员进行。是埃尔-赛义德和王以及他们的同事 在分析与表面化学计划的支持下，过渡金属纳米晶体的结构、形成机制、热稳定性和光热稳定性正在研究中。 控制和影响这些纳米晶体的生长形态的方法进行检查，使用电子显微镜和光谱探针。 的纳米粒子的稳定性的金属的类型，颗粒的形状，封端配体的类型，和化学环境的性质的依赖性进行检查。 这些研究的结果将是有用的，在评估用于多相催化应用的纳米粒子材料。 金属纳米粒子在多相催化中显示出巨大的应用前景。 合理理解这些材料的生长、控制尺寸和形状，以及了解它们的稳定性，是分析和表面化学计划支持的这个研究项目的重点。 El-Sayed教授和Wang教授以及他们在格鲁吉亚理工学院的同事正在结合这些重要材料的合成、光谱表征和电子显微镜表征来获得这种理解。

AbstractCHE-0240380El-Sayed/Georgia TechThe synthesis and characterization of transition metal nano-particles is the focus of this research project, being carried out at the Georgia Institute of Technology by co-P.I.'s El-Sayed and Wang and their coworkers. With the support of the Analytical and Surface Chemistry Program, the structure, formation mechanism, and thermal and photothermal stability of tranisition metal nanocrystals are being examined. Methods for controlling and affecting the growth morphology of these nanocrystals are examined using electron microscopy and spectroscopic probes. The dependence of the nanoparticle stability on the type of metal, the shape of the particle, the type of the capping ligand, and the nature of the chemical environment is examined. The results of these studies will be useful in evaluating nanoparticle materials for use in heterogeneous catalysis applications. Metal nanoparticles show great promise for applications in heterogeneous catalysis. The rational understanding of the growth, the control of size and shape, and understanding the stability of these materials is the focus of this research project supported by the Analytical and Surface Chemistry Program. Professors El-Sayed and Wang and their coworkers at Georgia Tech are combining synthesis, spectroscopic characterization, and electron microscopic characterization of these important materials to gain this understanding.