文献类型：期刊文献

英文题名：Facile synthesis of morphology-controlled platinum nanocrystals

作者：Zhong, Xinhua[1,2]; Feng, Yaoyu[3]; Lieberwirth, Ingo[2]; Knoll, Wolfgang[2]

机构：[1]E China Univ Chem Technol, Dept Chem, Shanghai 200237, Peoples R China;[2]Max Planck Inst Polymer Res, D-55128 Mainz, Germany;[3]Tongji Univ, Sch Life Sci, Shanghai 200092, Peoples R China

年份：2006

卷号：18

期号：10

起止页码：2468

外文期刊名：CHEMISTRY OF MATERIALS

收录：;EI(收录号：2006289986597);WOS:【SCI-EXPANDED(收录号:WOS:000237593400004)】；

语种：英文

外文关键词：Annealing - Colloids - Morphology - Platinum - Reduction - Synchrocyclotrons

摘要：A solution-phase chemical approach for the preparation of complex 3D porous flowerlike dendritic- and polypod-like, as well as multibranched Pt nanostructures by direct thermolytic reduction of trans-Pt(NH3) 2Cl2 was investigated. The chemical composition, structure, and morphology of the obtained nanostructures were characterized using EDA analysis, p-XRD, and TEM. The obtained 3D Pt nanostructures have additional advantages over the conventional spherical nanoparticles. The crystal surface reactivity was identified as the main driving force for the growth of anistropic nanostructures. The reported porous Pt nanostructures were not able to survive in the heat annealing process because of Ostwald ripening. The observed absence of the Ostwald ripening process is not unusual in the annealing process of colloidal metal nanocrystals because most nanocrystals do not dissolve in the reaction solvent system.