Shang Changshuai, Hong Wei, Guo Yaxiao, Wang Jin, Wang Erkang
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, P. R. China.
University of Chinese Academy of Sciences, Beijing, 100039, P. R. China.
Chemistry. 2017 Apr 27;23(24):5799-5803. doi: 10.1002/chem.201700172. Epub 2017 Apr 10.
Well-defined palladium trigonal bipyramidal/tetrahedral nanocrystals were synthesized by an aqueous-phase hydrothermal method. The final products were a mixture of trigonal bipyramidal and tetrahedral nanocrystals. Statistics indicated that there were more trigonal bipyramids than tetrahedra in the products. Ethylenediamine tetraacetic acid disodium salt (EDTA-2Na) was proven to be essential in controlling the final shapes of palladium nanocrystals. Some control experiments were also conducted to investigate the shape evolution and formation mechanisms. The synthesized palladium nanocrystals showed enhanced catalytic properties for ethanol and glycerol electrooxidation in alkaline medium. This work provides a new method in preparing Pd nanomaterials with well-defined shapes.
通过水相水热法合成了形状明确的钯三角双锥/四面体纳米晶体。最终产物是三角双锥纳米晶体和四面体纳米晶体的混合物。统计表明，产物中三角双锥的数量多于四面体。已证明乙二胺四乙酸二钠盐（EDTA-2Na）对于控制钯纳米晶体的最终形状至关重要。还进行了一些对照实验来研究形状演变和形成机制。合成的钯纳米晶体在碱性介质中对乙醇和甘油电氧化表现出增强的催化性能。这项工作为制备形状明确的钯纳米材料提供了一种新方法。
