硼掺杂金刚石微电极.pdfVIP

《化学通报》在线预览版 硼掺杂金刚石微电极 1 2 2 2 高成耀 , 常明 ，沈花玉 ，沈锋英 1 2 （天津大学电子信息工程学院 天津 300072 ； 天津理工大学电子信息与通信工程学院 天津 300191 ） 摘要 金刚石薄膜由于优异的特性，其作为微电极受到了很大的关注。本文对金刚石各类微电 极的制作方法和表征方法以及硼掺杂金刚石微电极(BDDME)的优异电化学特性，如宽电势窗口、低背 景电流、极高的电化学稳定性等作了介绍。对BDDME 在毛细电泳、生物探测、痕量物质检测等方面 的应用，以及BDDME 的实验研究和实际应用发展进行了评述。 关键词 硼掺杂金刚石 薄膜材料 微电极 毛细电泳 生物探测 Boron Doped Diamond Microelectrode 1 2 2 2 Gao Chengyao , Chang Ming ，Shen Huayu ，Shen Huayu 1 ( School of Electronic Information Engineering，Tianjin University，Tianjin 300072; 2Department of Optical Electronic Information and Electronic Engineering ，Tianjin University of Technology，Tianjin 300191) Abstract Boron doped diamond microelectrodes (BDDME) have attracted considerable interest due to its super electrochemical properties. The fabrication, electrochemical characteristics and application of boron-doped diamond microelectrode were reported. The fabrication method of BDDME and electrochemical characteristics of BDDME such as wide potential window, low background current, high electrochemical stability were detailed introduced. Applications of BDDME for capillary electrophoresis, biological detection, and detection of trace substances were summarized. Finally, the prospect of the research and application of BDDME were suggested. Keywords Boron-doped diamond, Film, Microelectrode, Capillary electrophoresis, Biological detection 近年来，随着电化学电极材料的发展，通过化学气相沉积（CVD ）方法制备的硼掺杂 金刚石电极(BDD)受到很大关注。金刚石薄膜在水性介质和非水介质中表现出宽电势窗口： BDD 电极在水的电解过程中，氢转移反应在-1.25V （vs SHE ）开始，而氧气在+2.3V （vs SHE ） 才开始析出，因此电势窗口超过3V[1~4]，为一般电极所无法比拟；BDD 电极表面具有吸附 惰性，具有很强的抗污染特性