Ye Wei, Kou Shufang, Guo Xia, Xie Fang, Sun Hongyan, Lu Haotian, Yang Jian
Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, and School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, People's Republic of China.
Nanoscale. 2015 Jun 7;7(21):9558-62. doi: 10.1039/c4nr06917j.
Bimetallic nanoframes and nanoboxes of Pd-Rh are synthesized by selective removal of Pd cores from different Pd-Rh nanocubes prepared by a hydrothermal reaction of PdCl2, RhCl3 and HCHO. HCHO in the procedure alters the reaction kinetics and the growth behavior of Pd and Rh, resulting in different nanocubes that determine the following hollow nanostructures, nanoframes or nanoboxes. The catalytic properties of the hollow nanostructures are investigated using the oxidation of o-phenylenediamine (OPDA) to 2,3-diaminophenazine (DAP) as a model reaction. The resulting bimetallic nanoframes and nanoboxes show enhanced conversion efficiencies compared to their solid counterparts. This method offers a convenient way for mass production of bimetallic hollow nanomaterials.
通过选择性地从由PdCl2、RhCl3和HCHO水热反应制备的不同Pd-Rh纳米立方体中去除Pd核，合成了Pd-Rh双金属纳米框架和纳米盒。该过程中的HCHO改变了Pd和Rh的反应动力学以及生长行为，从而产生了不同的纳米立方体，这些纳米立方体决定了后续的中空纳米结构、纳米框架或纳米盒。以邻苯二胺（OPDA）氧化为2,3-二氨基吩嗪（DAP）作为模型反应，研究了中空纳米结构的催化性能。与实心的对应物相比，所得的双金属纳米框架和纳米盒显示出更高的转化效率。该方法为双金属中空纳米材料的大规模生产提供了一种便捷途径。
