Inter-American Collaboration in Materials Research on the Atomic Resolution Structure Determination of Novel Nanomaterials - CIAM

新型纳米材料原子分辨率结构测定的美洲材料研究合作 - CIAM

• 批准号: 372174-2009
• 负责人: Kycia, Stefan
• 金额: $ 3.64万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Special Research Opportunity Program - Inter-American Collaboration in Materials Research
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=435125
• 关键词: Inter; American; Collaboration; Materials; Research

The NSERC CIAM project will enable the international team, consisting of the groups of: Stefan Kycia from Canada, Daniela Zanchet from Brazil, and Felix Requejo from Argentina, to develop novel nanoparticles and solve their structure in greater detail. Synthesis of metallic and bimetallic nanoparticles, such as Ag, Ni, Pt, Pt/Pd, and more complex systems, such as TiO2 or ZrO2 capped Au nanoparticles will be the targets of this proposed collaboration and will take advantage of rapid feedback by high resolution transmission electron microscopy (HRTEM), followed by a high resolution, detailed structure determination obtained by Extended X-Ray Absorption Fine Structure Spectroscopy (EXAFS) and High Energy X-Ray Scattering, High-Resolution Radial Distribution Function (HR-RDF) measurements. Complementary information about electronic structure will be obtained by X-Ray Absorption Near Edge Structure Spectroscopy (XANES). The structure results will be interpreted with the aid of computer simulations. There is significant overlap of interest and expertise on the science and technology aspects of nanoparticles production and characterization by the three PIs; till now, however, each group has approached this scientific problem from its respective point of view. Zanchet has been working on nanoparticles from the crystal growth standpoint and HRTEM, Kycia has worked on a variety of x-ray diffraction aspects of nanostructures, has performed pioneering work on the development of HR-RDF and has been recently making progress with molecular dynamics modeling of nanoparticles. Requejo has been working on core/shell nanoparticle synthesis and their characterization by x-ray absorption techniques (EXAFS and XANES). The present proposal should serve as a bridge to establish a collaboration to develop and characterize nanoparticle systems that are specifically tailored for catalysis and quantum information applications.

NSERC CIAM 项目将使由加拿大的 Stefan Kycia、巴西的 Daniela Zanchet 和阿根廷的 Felix Requejo 组成的国际团队能够开发新型纳米颗粒并更详细地解析其结构。金属和双金属纳米颗粒（例如 Ag、Ni、Pt、Pt/Pd）以及更复杂的系统（例如 TiO2 或 ZrO2 封端的 Au 纳米颗粒）的合成将是本次合作的目标，并将利用高分辨率的快速反馈透射电子显微镜 (HRTEM)，然后通过扩展 X 射线吸收精细结构光谱 (EXAFS) 和高能 X 射线散射、高分辨率径向分布获得高分辨率、详细的结构测定函数 (HR-RDF) 测量。有关电子结构的补充信息将通过 X 射线吸收近边缘结构光谱 (XANES) 获得。结构结果将借助计算机模拟进行解释。三位 PI 对纳米粒子生产和表征的科学和技术方面的兴趣和专业知识存在显着重叠；然而，到目前为止，每个团体都从各自的角度来解决这个科学问题。 Zanchet 一直致力于从晶体生长和 HRTEM 角度研究纳米颗粒，Kycia 致力于纳米结构的各种 X 射线衍射方面的研究，在 HR-RDF 的开发方面进行了开创性工作，并且最近在分子动力学建模方面取得了进展纳米颗粒。 Requejo 一直致力于核/壳纳米粒子的合成及其通过 X 射线吸收技术（EXAFS 和 XANES）的表征。本提案应作为建立合作的桥梁，以开发和表征专门为催化和量子信息应用定制的纳米粒子系统。