多种尺寸的钴纳米团簇的可控合成、结构与性能研究

项目名称： 多种尺寸的钴纳米团簇的可控合成、结构与性能研究

项目编号： No.21501181

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 闫楠

作者单位： 中国科学院合肥物质科学研究院

项目金额： 20万元

中文摘要： 金属纳米团簇因具有不同于传统金属纳米粒子的结构和性能，从而成为当今纳米科技领域的一个研究热门领域。然而目前大多数研究都集中在贵金属纳米团簇上，如金、银、铂等，这也限制了纳米团簇的实际应用。为了深入研究纳米团簇，并拓展其在各领域的进一步应用，对非贵金属纳米团簇的研究提上日程。钴作为一种磁性过渡金属，已经被广泛应用在日常生活和工业生产中，但关于钴纳米团簇的研究尚无人报道。钴纳米团簇会有一些什么样的结构和性质？其性质和结构以及尺寸等有什么关联？为回答这样一些饶有兴趣的问题和拓展金属纳米团簇的研究，我们拟从以下几个方面开展工作：（1）发展钴团簇尺寸可控的合成方法，合成多个尺寸的钴团簇，并确定其组成结构；（2）探索钴纳米团簇的性质（主要是光学性质、磁性等），发掘其应用潜力；（3）了解钴纳米团簇的性质随组成结构和尺寸衍变的规律。这些工作的开展，不仅具有重要的科学意义，而且有一定的应用价值。

中文关键词： 纳米团簇；过渡金属；材料合成；结构与性质；催化

英文摘要： Owing to some unique structures and properties, metal nanoclusters is becoming a hot topic in current nanoscience field. However, most attentions are paid to the nobel metal (such as gold, silver and platinum) nanoclusters, which limits the practical applications of metal nanoclusters. Thus it is urgent to extend the investigation to non-nobel metal nanoclusters. As a magnetic transition metal, cobalt has been widely used in daily life and industry community. However, the well-defined cobalt nanoclusters was not reported so far to our knowledge. Some intriguing questions naturally arise: How about the properties, compositions and structures of cobalt nanoclusters? What are the correlations of the structures (sizes) and properties of cobalt nanoclusters? To response to these questions, we are planning: (1) develop controlled synthesis methods of cobalt nanoclusters, obtain novel cobalt nanoclusters with various sizes, and then reveal the compositions and structures of them; (2) study the properties of as-prepared cobalt nanoclusters （mainly including the optical properties, magnetism,etc.）and investigate their applications potential; (3) insightfully understand the correlations of the structures (sizes) and properties of cobalt nanoclusters. It is expected that our efforts will not only reveal some essential scientific issues, but also have some important implications for practical applications of cobalt nanoclusters.

英文关键词： nanocluster;transition metal;material synthesis;structure and property;catalysis