NIRT: Dendrimer-Stabilized Nanoparticles for Next-Generation Catalysts

建议标题：NIRT：树枝状大分子稳定的纳米粒子用于下一代催化剂建议编号：CTS-0103135主要研究人员：Harry PloehnInstitution：南卡罗来纳大学本建议是应“纳米科学与工程”(NSF 00-119)的征集而提交的。这项建议的目的是设计树枝状分子稳定的过渡金属、双金属合金和过渡金属氧化物纳米颗粒，用于多相催化。树枝状大分子作为化学模板和纳米粒子稳定剂，为精确控制催化纳米粒子中原子的大小、组成和排列提供了机会，也为纳米粒子在表面有序的二维和三维阵列中自组装和固定提供了一种手段。利用在纳米尺度上设计和制造的催化结构所特有的现象，将提高催化剂的活性、选择性和寿命。研究和教育活动包括理论设计、分子建模、纳米粒子合成、催化剂制备和评估。通过这一多学科的活动，总体目标是基于合理的原子向上方法设计下一代催化剂。将通过NSF-REU的三个站点和斯隆基金会奖学金向学生提供额外的支持，旨在增加少数族裔的参与。这项工作有可能通过分子建模和纳米颗粒的合成来改进催化剂的合理设计。

AbstractProposal Title: NIRT: Dendrimer-stabilized Nanoparticles for Next-generation CatalystsProposal Number: CTS-0103135Principal Investigator:Harry PloehnInstitution: University of South CarolinaThis proposal was submitted in response to the solicitation "Nanoscale Science and Engineering" (NSF 00-119). The objective of this proposal is to design dendrimer-stabilized nanoparticles of transition metals, bimetallic alloys, and transition metal oxides for use in heterogeneous catalysis. Dendrimers, used as chemical templates and nanoparticle stabilizers, provide an opportunity for precise control of the size, composition, and arrangement of atoms in catalytic nanoparticles, as well as a means for self-assembly and immobilization of nanoparticles in ordered two-dimensional and three-dimensional arrays on surfaces. Catalyst activity, selectivity, and lifetime will be improved by exploiting phenomena unique to catalytic structures designed and fabricated on the nanoscale. Research and educational activities include theoretical design, molecular modeling, nanoparticle synthesis, catalyst preparation and evaluation. Through this multidisciplinary activity, an overall goal is to design the next generation of catalysts based on a rational atom-up approach. Additional support will be provided to students through the three NSF-REU sites and through Sloan Foundation Fellowships, aimed at increasing minority participation. This work has the potential to improve the rational design of catalysts through molecular modeling and synthesis of nanoparticles.