Tailoring the local/atomic structure and electronic properties of nanoparticles: from fundamental studies to potential applications in catalysis and biotechnology

定制纳米粒子的局部/原子结构和电子特性：从基础研究到催化和生物技术的潜在应用

• 批准号: 327223-2009
• 负责人: Zhang, Peng
• 金额: $ 1.97万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=497859
• 关键词: Tailoring; local; atomic; structure; electronic

The proposed research falls into the rapidly growing area of nanoscience and nanotechnology and centers around the studies of metal nanoparticles (NPs), the fundamental building blocks of nanotechnology. The past two decades have witnessed a explosive growth of research in metal nanoparticles (NPs), which show promising applications in a variety of areas in nanotechnology such as biosensing, nanoelectronics, drug delivery and catalysis. In order to improve the performance of metal NPs in practical applications, selection of bimetallic and trimetallic NPs with well-tailored atomic structures, such as core-shell, alloy and core-alloyed shell, is often preferred. These multicomponent NPs may combine many desired functionalities associated with each component in the NPs, such as high catalytic reactivity, magnetic anisotropy, biocompatability and so on. In spite of these advantages, it remains an important challenge to synthesize and characterize multicomponent metal NPs with well-tailored atomic structure and electronic properties. Towards this end, the proposed research is intended to improve the ability of precise control of the structure and electronic properties of multi-component metal NPs at atomic level by developing efficient synthetic methodology for the NPs and by providing insights into their structure-property relationship with powerful X-ray spectroscopy techniques. Particular emphasis will be placed in the studies of superparamagnetic NPs containing at least one magnetic metal (e.g. Fe, Co, Ni). These fundamental studies will be carried out in conjunction with the exploration of some innovative applications of the NPs in catalysis and biotechnology.

拟议的研究属于纳米科学和纳米技术的快速生长领域，以及围绕金属纳米颗粒（NP）的研究，纳米技术的基本构建基块。在过去的二十年中，金属纳米颗粒（NP）的研究爆炸性增长，在纳米技术中，在各个领域显示出有希望的应用，例如生物传感，纳米电子学，药物递送和催化。为了提高金属NP在实际应用中的性能，通常优先优先选择具有量化的原子结构（例如核壳，合金和合金壳）的双金属和三金属NP。这些多组分NP可以结合与NP中每个组件相关的许多所需功能，例如高催化反应性，磁各向异性，生物相容性等。 尽管存在这些优势，但与量身定制的原子结构和电子特性合成和表征多组分金属NP仍然是一个重要的挑战。为此，拟议的研究旨在通过为NP开发有效的合成方法，并通过对其与强大的X射线光谱技术的结构实质关系进行洞察力，从而提高原子水平上多组分金属NP的结构和电子特性的能力。特别重点将放在含有至少一种磁性金属（例如Fe，Co，Ni）的超顺磁NP的研究中。这些基本研究将与探索NP在催化和生物技术中的某些创新应用一起进行。