硼掺杂金刚石薄膜电极电化学特性的研究  

ELECTROCHEMICAL CHARACTERIZATION OF BORON-DOPED DIAMOND THIN FILM ELECTRODE

作　　者：朱沛林[1] 朱建中[1] 杨申仲 张国雄[1] 

机构地区：[1]中国科学院上海冶金研究所

出　　处：《功能材料与器件学报》1996年第4期207-214,共8页Journal of Functional Materials and Devices

摘　　要：本文用未经任何表面处理的硼掺杂金刚石薄膜为电极材料，采用循环伏安法和计时电流法检测含Ｋ３Ｆｅ（ＣＮ）６的ＫＣｌ和ＨＣｌ－ＫＣｌ溶液的响应电流，对电极的基本特性，如响应时间，稳定性等进行了研究；同时也对溶液ｐＨ值变化与因而造成的响应电流变化进行了研究。从与玻碳电极比较的角度出发，分别在含汞的酸性ＫＣｌ－ＨＮＯ３和中性ＫＣｌ体系中，在一定电位下预富集铅，而后用阳极扫描法检测Ｐｂ－Ｈｇ的溶出峰电流，对金刚石膜电极的分辨率，重现性，稳定性等作了进一步的探讨；并对实际水样进行了测试。大量的实验结果表明，这种低电阻率的ＣＶＤ金刚石膜具有很多优越的电化学特性，有望在电化学中作为电极材料而被使用。The electrochemical characterization of B-doped diamond thin film electrode was studied by using cyclic voltammetry and amperometry to determine the response current of K_3Fe(CN)_6 in KCl and HClKCl solution,and by using the anodic scan to examine lead containing solution after concentrating it in KCl and KCl-HNO_3. According to the voltammetric measurements for K_3Fe(CN)_6 and lead , the electrodes showed rapid response, high sensitivity, good precision, and provided good resolving power for the determination of lead and cadmium, and gave satisfactory results in the analysis of a water sample. Compared with those results given by glassy carbon electrodes,the B-doped diamond film electrodes offered extreme stability over a period of one month. The effect of pH on the response current of electrodes was studied too.The results described here indicate that this low-resistivity material has suitable electrochemical property, and will be very useful in electroanalysis as a new electrode material.

关 键 词：硼掺杂 金刚石薄膜 电极 电化学 

分 类 号：TN304.18[电子电信—物理电子学]