Cobalt Phthalocyanine-Modified Boron-Doped Diamond Electrode for Highly Sensitive Detection of Hydrogen Peroxide
Cobalt Phthalocyanine-Modified Boron-Doped Diamond Electrode for Highly Sensitive Detection of Hydrogen Peroxide
复制标题
DOI：
10.1149/1.3211799
复制
发表时间：
2009-11
影响因子：
3.9
通讯作者：
T. Kondo;Akira Tamura;T. Kawai
中科院分区：
文献类型：
--
作者：
T. Kondo;Akira Tamura;T. Kawai
制备了钴酞菁修饰的硼掺杂金刚石（CoPc-BDD）电极，用于过氧化氢的灵敏检测。氢封端的BDD电极表面终止与吡啶部分通过光化学修饰与4-乙烯基吡啶，然后通过固定化的CoPc的表面上的CoPc溶液中浸泡。X射线光电子能谱研究表明，表面吡啶和钴原子的CoPc的配位有助于表面改性。研究了该修饰电极对过氧化氢的电化学检测。循环伏安法证实了CoPc-BDD电极对过氧化氢的电化学氧化具有催化活性。使用流动注射分析-电化学检测系统，我们证明了CoPc-BDD电极非常适合用于检测过氧化氢，检测限为4.9 nM。© 2009电化学学会。[DOI：10.1149/1.3211799]保留所有权利。
A cobalt phthalocyanine-modified boron-doped diamond (CoPc-BDD) electrode was fabricated for a sensitive detection of hydrogen peroxide. The hydrogen-terminated BDD electrode surface was terminated with pyridine moieties via photochemical modification with 4-vinylpyridine followed by immobilization of CoPc on the surface by immersion in a CoPc solution. X-ray photoelectron spectroscopy studies suggested that the coordination of the surface pyridine and the Co atom in CoPc contributes to surface modification. Electrochemical detection of hydrogen peroxide at the modified electrode was also investigated. Cyclic voltammetry confirmed that the CoPc-BDD electrode exhibited a catalytic activity for the electrochemical oxidation of hydrogen peroxide. Using a flow-injection analysis―electrochemical detection system, we demonstrated that the CoPc-BDD electrode is well suited for the detection of hydrogen peroxide, with a limit of detection of 4.9 nM. © 2009 The Electrochemical Society. [DOI: 10.1149/1.3211799] All rights reserved.