College of Chemistry, Chemical Engineering and Materials Science , Soochow University , Suzhou 215123 , P. R. China.
School of Pharmacy and Life Sciences Robert Gordon University , Aberdeen AB10 7GJ , U.K.
ACS Appl Mater Interfaces. 2018 Apr 18;10(15):12659-12665. doi: 10.1021/acsami.8b00532. Epub 2018 Apr 9.
The design of nanocatalysts by controlling pore size and particle characteristics is crucial to enhance the selectivity and activity of the catalysts. Thus, we have successfully demonstrated the synthesis of binary PdPb alloy nanocubes (PdPb NCs) by controlling pore size and particle characteristics. In addition, the as-obtained binary PdPb NCs exhibited superior electrocatalytic activity of 4.06 A mg and 16.8 mA cm toward ethylene glycol oxidation reaction and 2.22 A mg and 9.2 mA cm toward glycerol oxidation reaction when compared to the commercial Pd/C. These astonishing characteristics are attributed to the attractive nanocube structures as well as the large number of exposed active areas. Furthermore, the bifunctional effects originated from Pd and Pb interactions help to display high endurance with less activity decay after 500 cycles, showing a great potential in fuel cell applications.
通过控制孔径和颗粒特性来设计纳米催化剂对于提高催化剂的选择性和活性至关重要。因此，我们成功地通过控制孔径和颗粒特性合成了二元 PdPb 合金纳米立方体（PdPb NCs）。此外，与商业 Pd/C 相比，所获得的二元 PdPb NCs 在乙二醇氧化反应中表现出 4.06 A mg 和 16.8 mA cm 的优异电催化活性，在甘油氧化反应中表现出 2.22 A mg 和 9.2 mA cm 的优异电催化活性。这些惊人的特性归因于有吸引力的纳米立方体结构以及大量暴露的活性面积。此外，Pd 和 Pb 相互作用产生的双功能效应有助于显示出高耐久性，在 500 次循环后活性衰减较小，在燃料电池应用中具有巨大的潜力。
