Investigation of catalytic activity towards oxygen reduction reaction of Pt dispersed on boron doped graphene in acid medium
Investigation of catalytic activity towards oxygen reduction reaction of Pt dispersed on boron doped graphene in acid medium
复制标题
研究分散在掺硼石墨烯上的铂在酸性介质中对氧还原反应的催化活性
DOI：
10.1016/j.jcis.2016.06.069
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发表时间：
2016-10-01
影响因子：
9.9
通讯作者：
Ramaprabhu, Sundara
中科院分区：
文献类型：
--
作者：
Ashok, Pullamsetty;Ramaprabhu, Sundara
以硼掺杂石墨烯为研究对象，采用硼氢化钠（NaBH4）、多元醇、改性多元醇等多种化学还原方法将铂（Pt）修饰在硼掺杂石墨烯上。x射线衍射分析表明，合成的催化剂颗粒具有纳米晶结构，并采用透射电镜和扫描电镜对其形貌和颗粒分布进行了研究。利用旋转圆盘电极（RDE）技术和循环伏安法对其电化学性能进行了研究。结果表明，氧还原反应（ORR）是一个四电子过程。用K-L和Tafel图评价了ORR的动力学。与其他两种电催化剂相比，改性多元醇还原法制备的电催化剂表现出更好的催化活性。(C) 2016 Elsevier Inc.版权所有。
Boron doped graphene was prepared by a facile method and platinum (Pt) decoration over boron doped graphene was done in various chemical reduction methods such as sodium borohydride (NaBH4), polyol and modified polyol. X-ray diffraction analysis indicates that the synthesized catalyst particles are present in a nanocrystalline structure and transmission and scanning electron microscopy were employed to investigate the morphology and particle distribution. The electrochemical properties were investigated with the help of the rotating disk electrode (RDE) technique and cyclic voltammetry. The results show that the oxygen reduction reaction (ORR) takes place by a four-electron process. The kinetics of the ORR was evaluated using K-L and Tafel plots. The electrocatalyst obtained in modified polyol reduction method has shown the better catalytic activity compared to other two electrocatalysts. (C) 2016 Elsevier Inc. All rights reserved.