Ding Tao, Zhang Li, Li Huanran, Sun Yuan, Yang Qing
Hefei National Laboratory of Physical Sciences at the Microscale (HFNL), Department of Chemistry, Laboratory of Nanomaterials for Energy Conversion (LNEC), and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China (USTC), Hefei, Anhui 230026, P. R. China.
ACS Omega. 2018 Dec 18;3(12):17668-17675. doi: 10.1021/acsomega.8b02584. eCollection 2018 Dec 31.
The realization of small platinum (Pt) nanoparticles (NPs) embedded in conductive porous carbon would largely improve the catalytic activity effectively with more durability, although there remain challenges to achieve such hybrid nanostructures via a simple synthetic route. Here, an efficient and facile profile was demonstrated for the synthesis of one kind of uniform three-dimensional (3D) spherical Pt/C composite electrocatalyst with small monodispersed Pt NPs embedded in the matrix of 3D spherical porous carbon derived from the corresponding spherically polymeric Pt(II) complex. The monodispersed Pt NPs within the uniform 3D Pt/C composite are ∼4.4 nm and they are dispersed homogeneously within the matrix of 3D spherical porous carbon. Investigations showed that the 3D Pt/C composite exhibits high catalytic performances as compared to the commercial catalyst of Pt black for oxidation reactions of ethylene glycol, ethanol, and methanol. This strategy developed in the present study would be available for possible fabrication of some other active 3D porous carbon-supported Pt-based catalysts including their bimetallic and multimetallic counterparts.
嵌入导电多孔碳中的小尺寸铂（Pt）纳米颗粒（NPs）的实现将在很大程度上有效提高催化活性并具有更高的耐久性，尽管通过简单的合成路线实现这种混合纳米结构仍然存在挑战。在此，展示了一种高效且简便的方法，用于合成一种均匀的三维（3D）球形Pt/C复合电催化剂，其中小的单分散Pt NPs嵌入由相应的球形聚合Pt（II）配合物衍生的3D球形多孔碳基质中。均匀的3D Pt/C复合材料中的单分散Pt NPs约为4.4 nm，它们均匀地分散在3D球形多孔碳基质中。研究表明，与商业Pt黑催化剂相比，3D Pt/C复合材料在乙二醇、乙醇和甲醇的氧化反应中表现出高催化性能。本研究中开发的这种策略可用于可能制备一些其他活性的3D多孔碳负载的Pt基催化剂，包括其双金属和多金属对应物。
