三(五氟苯基)羟苯基硼酸三乙基胺的电化学行为研究  

Study on the electrochemical behavior of triethylammonium tri(pentafluorophenyl)-(4-hydroxyphenyl)borate

作　　者：齐风佩[1] 刘石泉[1] 钟桐生[1] 刘蓉[1] 龙立平[1] 翁亮[1] 丁亮中[1] 

机构地区：[1]湖南城市学院化学与环境工程学院,湖南益阳413000

出　　处：《华中师范大学学报（自然科学版）》2013年第4期532-535,共4页Journal of Central China Normal University：Natural Sciences

基　　金：湖南省科技计划项目(2012FJ3023);湖南省高校产学研合作示范基地产业化项目(11CY003);湖南省高校产学研合作示范基地产业化项目(11CY004);湖南省高校产学研合作示范基地建设项目(湘教通[2010]235号);湖南省应用研究基地(湘科技字154号);益阳市指导性科技计划项目(2012JZ32)

摘　　要：研究了三(五氟苯基)羟苯基硼酸三乙基胺(TTHB)的电化学行为.在pH为1.0～8.0的B-R缓冲溶液中,TTHB有一个氧化特征峰;当pH为2.0时,峰电流最大(ip=-2.378×10-5A),且氧化峰峰形最好;超过2.0后,峰电流随pH值的增大而减小;至pH>8.0时,氧化峰消失.在最适pH 2.0的条件下氧化峰电位Ep与扫描速度υ有良好的线性关系(Ep=0.6026+0.4229υ,R=0.9916),峰电流ip与扫描速度的平方根υ1/2成线性相关(ip=0.3372-69.2291ν1/2,R=0.9955),表明该反应过程为扩散控制.TTHB在1.0×10-6～7.5×10-4 mol/L的浓度范围内,其峰高与浓度呈线性关系,检出限为3.5×10-7 mol/L.The electrochemical behavior of triethylammonium tri（pentafluorophenyl）-（4- hydroxyphenyl） horate（TTHB） was investigated by cyclic volammetry. The experimem tal result showed that an oxidation characteristic peak of TTHB could be found in the B-R buffer solution from pH 1.0 to 8.0, and reached to highest response at pH 2.0（ ip =-2. 378 〉（10^-5A） with a good shape. The peak current was decreased with the developing of pH value when it was beyond 2.00, and disappeared until the pH value was a- bove 8.0. At the optimum condition of pH=2.0, the peak potential was proportional to the scanning rate （ Eb =0. 6026-±0. 4229 v , R =0. 9916）, the peak current was proportional to the square root of the scan rate （ip =0.3372--69.2291v 1/2 R =0.9955）. This indicates the reaction was diffusion controlled. Under the chosen conditions, the peak currents were correspondent linearly to the concentrations of TTHB in the range of 1.0X10-6-7.5×10 4 tool/L, withadetectionlimit ofS, 5×10-Tmol/L.

关 键 词：循环伏安法 氧化峰 扩散控制 TTHB 

分 类 号：O646.2[理学—物理化学]