One-step and low-temperature synthesis of iodine-doped graphene and its multifunctional applications for hydrogen evolution reaction and electrochemical sensing
One-step and low-temperature synthesis of iodine-doped graphene and its multifunctional applications for hydrogen evolution reaction and electrochemical sensing
复制标题
一步低温合成碘掺杂石墨烯及其在析氢反应和电化学传感中的多功能应用
DOI：
10.1016/j.electacta.2017.07.001
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发表时间：
2017-08-20
影响因子：
6.6
通讯作者：
Tian, Ye
中科院分区：
文献类型：
--
作者：
Chu, Ke;Wang, Fan;Tian, Ye
碘（I）已经成为有效定制石墨烯的电催化性质的强大杂原子掺杂剂。然而，碘掺杂石墨烯（I-G）的制备方法及其电催化应用在很大程度上仍然是未知的。在此，一个一步和低温水热方法被开发用于成功地合成具有高的I-掺杂水平（0.52原子%）的I-G。然后将所得的I-G用作析氢反应（HER）和电化学传感的无金属催化剂。结果表明，与未掺杂的石墨烯相比，I-G表现出显着增强的HER活性，这归因于I掺杂在提供大的暴露活性位点和高电子转移能力方面的关键作用。此外，I-G还表现出有吸引力的传感性能，高灵敏度和选择性检测多巴胺。这些发现表明，水热合成的I-G可以是一个有前途的电催化剂，用于水裂解和电化学传感的多功能应用。(C)2017爱思唯尔有限公司版权所有
Iodine (I) has emerged as a powerful heteroatom dopant for efficiently tailoring the electrocatalytic properties of graphene. However, the preparation methods of I-doped graphene (I-G) and its electrocatalysis applications remain largely unexplored. Herein, a one-step and low-temperature hydrothermal approach was developed for the successful synthesis of I-G with a high I-doping level (0.52 at.%). The resulting I-G was then applied as a metal-free catalyst for hydrogen evolution reaction (HER) and electrochemical sensing. It was shown that the I-G exhibited a dramatically enhanced HER activity compared to undoped graphene, attributed to the critical role of I-doping in offering large exposed active sites and high electron transfer capability. Furthermore, I-G also displayed attractive sensing performances for highly sensitive and selective detection of dopamine. These findings demonstrate that the hydrothermally synthesized I-G can be a promising electrocatalyst for multifunctional applications in water-splitting and electrochemical sensing. (C) 2017 Elsevier Ltd. All rights reserved.