Xu Han, Ding Liang-Xin, Feng Jin-Xian, Li Gao-Ren
MOE Laboratory of Bioinorganic and Synthetic Chemistry , KLGHEI of Environment and Energy Chemistry , School of Chemistry and Chemical Engineering , Sun Yat-sen University , Guangzhou 510275 , China . Email:
School of Chemistry & Chemical Engineering , South China University of Technology , Guangzhou 510640 , China.
Chem Sci. 2015 Dec 1;6(12):6991-6998. doi: 10.1039/c5sc02544c. Epub 2015 Aug 28.
The catalytic activity and durability are crucial for the development of high-performance electrocatalysts. To design electrocatalysts with excellent electroactivity and durability, the structure and composition are two important guiding principles. In this work, novel Pt/Ni(OH)-NiOOH/Pd multi-walled hollow nanorod arrays (MHNRAs) are successfully synthesized. The unique MHNRAs provide fast transport and short diffusion paths for electroactive species and high utilization rate of catalysts. Because of the special surface and synergistic effects, the Pt/Ni(OH)-NiOOH/Pd MHNRA electrocatalysts exhibit high catalytic activity, high durability and superior CO poisoning tolerance for the electrooxidation of formic acid in comparison with Pt@Pd MHNRAs, commercial Pt/C, Pd/C and PtRu/C catalysts.
催化活性和耐久性对于高性能电催化剂的开发至关重要。为了设计具有优异电活性和耐久性的电催化剂，结构和组成是两个重要的指导原则。在这项工作中，成功合成了新型的Pt/Ni(OH)-NiOOH/Pd多壁空心纳米棒阵列（MHNRAs）。独特的MHNRAs为电活性物质提供了快速传输和短扩散路径以及高催化剂利用率。由于特殊的表面和协同效应，与Pt@Pd MHNRAs、商业Pt/C、Pd/C和PtRu/C催化剂相比，Pt/Ni(OH)-NiOOH/Pd MHNRA电催化剂对甲酸电氧化表现出高催化活性、高耐久性和优异的抗CO中毒性能。
