Electrochemical dopamine sensor based on P-doped graphene: Highly active metal-free catalyst and metal catalyst support
Electrochemical dopamine sensor based on P-doped graphene: Highly active metal-free catalyst and metal catalyst support
复制标题
基于磷掺杂石墨烯的电化学多巴胺传感器：高活性无金属催化剂和金属催化剂载体
DOI：
10.1016/j.msec.2017.08.053
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发表时间：
2017-12-01
影响因子：
7.9
通讯作者：
Tian, Ye
中科院分区：
文献类型：
--
作者：
Chu, Ke;Wang, Fan;Tian, Ye
杂原子掺杂是提高石墨烯及其杂化材料催化活性的有效策略。尽管P掺杂的石墨烯（P-G）在能量存储/产生应用中的兴趣越来越大，但P-G很少被研究用于电化学传感。在此，我们报道了使用P-G作为无金属催化剂和金属催化剂载体用于多巴胺（DA）的电化学检测。作为一种无金属催化剂，P-G表现出突出的DA传感性能，由于P掺杂在提高石墨烯对DA氧化的电催化活性方面的重要作用。此外，P-G可以作为负载Au纳米粒子的有效载体材料，得到的Au/P-G杂化物显示出显著增强的电催化活性和优异的传感性能，其线性范围为0.1-180 μ M，检测限为0.002 μ M。这些结果表明，P-G可能是一种非常有前途的电化学传感器电极材料。
Heteroatom doping is an effective strategy to enhance the catalytic activity of graphene and its hybrid materials. Despite a growing interest of P-doped graphene (P-G) in energy storage/generation applications, P-G has rarely been investigated for electrochemical sensing. Herein, we reported the employment of P-G as both metal-free catalyst and metal catalyst support for electrochemical detection of dopamine (DA). As a metal-free catalyst, P-G exhibited prominent DA sensing performances due to the important role of P doping in improving the electro-catalytic activity of graphene toward DA oxidation. Furthermore, P-G could be an efficient supporting material for loading Au nanoparticles, and resulting Au/P-G hybrid showed a dramatically enhanced electrocatalytic activity and extraordinary sensing performances with a wide linear range of 0.1-180 mu M and a low detection limit of 0.002 mu M. All these results demonstrated that P-G might be a very promising electrode material for electrochemical sensor applications.