Song Yanna, Sun Jingcheng, Zhang Yanru, Wang Bingxin, Li Qiang, Fan Yongming
MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University Beijing 100083 China.
College of Science, Beijing Forestry University Beijing 100083 China
RSC Adv. 2018 Apr 17;8(26):14138-14143. doi: 10.1039/c8ra01261j.
Urchin-like RuCu nanoparticles and hollow RuCuMo nanoparticles were prepared by a one-pot chemical reduction method. The nanoparticles were characterized by EDX, HRTEM, XPS and ICP-AES. By combining cyclic voltammetry and TEM, the formation process of nanoparticles was obtained. The urchin-like RuCu nanoparticles are proved to be formed underpotential deposition mechanism and the formation of ternary nanoparticles RuCuMo was due to the replacement of Cu with Ru and the interception of Mo gradually. It was found that the formation of different morphology is depended on the precursors in the reaction system and their reduction sequences. Compared to previously reported multi-step synthetic routes, the developed method here is much simpler.
通过一锅化学还原法制备了海胆状RuCu纳米颗粒和空心RuCuMo纳米颗粒。通过能谱仪（EDX）、高分辨透射电子显微镜（HRTEM）、X射线光电子能谱（XPS）和电感耦合等离子体发射光谱仪（ICP - AES）对纳米颗粒进行了表征。结合循环伏安法和透射电子显微镜，获得了纳米颗粒的形成过程。结果表明，海胆状RuCu纳米颗粒是通过欠电位沉积机制形成的，而三元纳米颗粒RuCuMo的形成是由于Ru逐渐取代Cu以及Mo的截留。研究发现，不同形态的形成取决于反应体系中的前驱体及其还原顺序。与先前报道的多步合成路线相比，这里开发的方法要简单得多。
