Chen Lei, Zhou Luozeng, Lu Hongbin, Zhou Yaqin, Huang Jialu, Wang Jin, Wang Yang, Yuan Xiaolei, Yao Yong
School of Chemistry and Chemical Engineering, Nantong University, 9 Seyuan Road, Nantong, 226019, Jiangsu, P. R. China.
State Key Laboratory of Space Power-Sources Technology, Shanghai Institute of Space Power-Sources, 2965 Dongchuan Road, Shanghai, 200245, P. R. China.
Chem Commun (Camb). 2020 Aug 11;56(64):9138-9141. doi: 10.1039/d0cc03704d.
In this work, novel insights into the influence of different nanocrystal structures on the electrocatalytic oxidation of methanol are reported. Herein, we have successfully prepared high-yield PtPb nanoplates in the diethylene glycol (DEG) solvent. The as-obtained PtPb nanoplates with a large surface area of the (102) facet show higher MOR activity and superior durability in alkaline electrolyte compared with both zero-dimensional PtPb nanoparticles and commercial Pt/C. Further chronoamperometric (CA) measurements and discrete Fourier transform (DFT) calculations indicate that the PtPb nanoplates possess much better operation durability and CO tolerance due to the negative adsorption energy of the (102) facet.
在这项工作中，报道了关于不同纳米晶体结构对甲醇电催化氧化影响的新见解。在此，我们已在二甘醇（DEG）溶剂中成功制备出高产率的PtPb纳米片。与零维PtPb纳米颗粒和商业Pt/C相比，所获得的具有大（102）晶面表面积的PtPb纳米片在碱性电解质中表现出更高的甲醇氧化反应（MOR）活性和优异的耐久性。进一步的计时电流法（CA）测量和离散傅里叶变换（DFT）计算表明，由于（102）晶面的负吸附能，PtPb纳米片具有更好的操作耐久性和CO耐受性。
