摘要
形状控制的铂纳米晶由于具有高选择性和催化活性,近年来受到越来越多的关注。各种低指数晶面所围成的铂纳米晶,包括立方体、四面体、八面体、枝状晶体等可以通过胶体法或热解法来制备。表面具有高指数晶面结构的二十四面体等多面体也已经由电化学方法得到。本文评述了形状控制的铂纳米晶的合成方法、表征和应用等方面的进展,分析了铂纳米晶稳定性的影响因素,并对目前铂纳米晶合成及应用研究中存在的主要问题和发展前景进行了探讨和展望。
Shape-controlled platinum nanocrystals are attracting more and more attention in recent years due to the high selectivity and reactivity. Colloidal or thermal decomposition method can be used to synthesis platinum nanocrystals enclosed by low index planes including cubes, tetrahedrons, octahedrons and dentrites et al. Un-conventional polyhedrons such as tetrahexahedrons bound by high index planes have also been achieved by electrochemical method. This paper reviewes the latest research progress in the preparation, characterization and applications of shape-controlled platinum nanocrystals. The factors influencing the stability of platinum nanocrystals are analyzed. Finally, the existing problems in this area are discussed and the future research trends are prospected.
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2010年第2期338-344,共7页
Progress in Chemistry
基金
国家自然科学基金项目(No.50872027
20476020)资助
关键词
铂纳米晶
催化剂
形状控制
优势晶面
platinum nanocrystals
catalysts
shape control
preferential facet
