Carbon supported PdSn nanocatalysts with enhanced performance for ethanol electrooxidation in alkaline medium
Carbon supported PdSn nanocatalysts with enhanced performance for ethanol electrooxidation in alkaline medium
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碳负载 PdSn 纳米催化剂在碱性介质中增强乙醇电氧化性能
DOI：
10.1016/j.ijhydene.2019.06.013
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发表时间：
2019-07
影响因子：
7.2
通讯作者：
Liu Qinglin
中科院分区：
文献类型：
--
作者：
Adam Amir Mahmoud Makin;Zhu Aimei;Ning Lina;Deng Min;Zhang Qiugen;Liu Qinglin
本文采用简单的化学还原法制备了碳载Pd-Sn纳米催化剂，并以乙二醇为还原剂，在碱性条件下对乙醇进行电氧化。用X射线衍射、X射线光电子能谱、能量色散X射线和透射电子显微镜研究了PdSn/fC催化剂的组成、结构和形貌。采用循环伏安法和计时电流法研究了PdSn/fC纳米催化剂的电化学活性和耐久性。结果表明，制备的PdSn/fC纳米催化剂分散均匀，粒径小。此外，所制备的PdSn/fC纳米催化剂在碱性环境中具有比Pd/fC和商业Pd/C（JM）纳米催化剂更高的电化学活性和更好的提高采收率稳定性。具体而言，Pd 1.5 Sn/fC纳米催化剂（3413.3 mA mg Pd− 1）的电催化活性几乎是Pd/C（JM）纳米催化剂（355.2 mA mg Pd− 1）的8.6倍，这在已报道的Pd-Sn催化剂中具有竞争力。这些结果表明，均匀的碳负载PdSn纳米结构是有前途的直接乙醇燃料电池的电催化剂。
In this work, simple chemical reduction method is used to prepare Pd–Sn nanocatalysts supported on carbon for ethanol electro-oxidation in alkaline environment using ethylene glycol as reductant. The composition, structure and morphologies of PdSn/fC catalysts are investigated by X-ray diffraction, X-ray photoelectron spectroscopy, energy dispersive X-ray and transmission electron microscopy. The electro-chemical activity and durability of as-obtained PdSn/fC nanocatalysts are investigated and determined by cyclic voltammetry and Chronoamperometric measurements. The obtained results demonstrate that as prepared PdSn/fC nanocatalysts have uniform dispersion and small particle size. In addition to, the as prepared PdSn/fC nanocatalysts have higher electro-chemical activity and better stability toward EOR in alkaline environment than those of Pd/fC and commercial Pd/C (JM) nanocatalysts. Specifically, the electro-catalytic activity of Pd 1.5 Sn/fC nanocatalyst (3413.3 mA mg Pd− 1) is almost 8.6 times higher than Pd/C (JM) nanocatalyst (355.2 mA mg Pd− 1), which has competitive power among reported Pd–Sn catalysts. These results indicate that the uniform carbon supported PdSn nanostructure are promising electrocatalysts for direct ethanol fuel cells.
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影响因子：
7.2
作者：
D. González-Quijano;W. Pech-Rodríguez;J. A. González‐Quijano;J. I. Escalante-García;G. Vargas-Gutiérrez;I. Alonso-Lemus;F. J. Rodríguez-Varela
通讯作者：
D. González-Quijano;W. Pech-Rodríguez;J. A. González‐Quijano;J. I. Escalante-García;G. Vargas-Gutiérrez;I. Alonso-Lemus;F. J. Rodríguez-Varela
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影响因子：
6.6
作者：
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通讯作者：
Geping Yin
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影响因子：
8.4
作者：
Yang, Honglei;Zhang, Xueyao;Ma, Jiantai
通讯作者：
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影响因子：
9.9
作者：
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通讯作者：
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影响因子：
9.2
作者：
K. Scott;E. Yu;G. Vlachogiannopoulos;M. Shivare;N. Duțeanu
通讯作者：
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