淮北师范大学学报（自然科学版）
淮北師範大學學報（自然科學版）
회북사범대학학보（자연과학판）
JOURNAL OF HUAIBEI COAL INDUSTRY TEACHERS COLLEGE(NATURAL SCIENCE)
2011年
1期
41-46
,共6页
聚中性红%室温离子液体%阻抑电化学%过氧化氢
聚中性紅%室溫離子液體%阻抑電化學%過氧化氫
취중성홍%실온리자액체%조억전화학%과양화경
poly(neutral red)%RTIL%electrochemical inhibitory%hydrogen peroxide
通过连续循环伏安法在含3.15 ×10-4mol·L-1中性红单体和0.1 mol·L-1[HEMIm][BF4]离子液体的磷酸缓冲溶液中得到离子液体掺杂的中性红修饰电极.将该修饰电极置于磷酸缓冲溶液中可观察到一对氧化还原峰,其阴极峰电位和阳极峰电位分别位于-0.593 9 V和-0.464 9 V(verBu6 SeE).进一步研究发现,该修饰电极的氧化峰对过氧化氢的电化学行为表现出良好的阻抑作用.据此,建立测定过氧化氢的阻抑电化学新方法,线性范围为0-2.73×10-8 mol·L-1,方法检出限为1.11×10-8 mol·L-1.
通過連續循環伏安法在含3.15 ×10-4mol·L-1中性紅單體和0.1 mol·L-1[HEMIm][BF4]離子液體的燐痠緩遲溶液中得到離子液體摻雜的中性紅脩飾電極.將該脩飾電極置于燐痠緩遲溶液中可觀察到一對氧化還原峰,其陰極峰電位和暘極峰電位分彆位于-0.593 9 V和-0.464 9 V(verBu6 SeE).進一步研究髮現,該脩飾電極的氧化峰對過氧化氫的電化學行為錶現齣良好的阻抑作用.據此,建立測定過氧化氫的阻抑電化學新方法,線性範圍為0-2.73×10-8 mol·L-1,方法檢齣限為1.11×10-8 mol·L-1.
통과련속순배복안법재함3.15 ×10-4mol·L-1중성홍단체화0.1 mol·L-1[HEMIm][BF4]리자액체적린산완충용액중득도리자액체참잡적중성홍수식전겁.장해수식전겁치우린산완충용액중가관찰도일대양화환원봉,기음겁봉전위화양겁봉전위분별위우-0.593 9 V화-0.464 9 V(verBu6 SeE).진일보연구발현,해수식전겁적양화봉대과양화경적전화학행위표현출량호적조억작용.거차,건립측정과양화경적조억전화학신방법,선성범위위0-2.73×10-8 mol·L-1,방법검출한위1.11×10-8 mol·L-1.
In 0.1 mol/L phosphate buffer solution(pa 6.0)containing 3.15×10-4 mol/L neutral red monomer and 0.1 mol/L[HEMIm][BF4],the Poly(neutral red)film doped with[HEMIm][BF4] Was prepared using repeated potential cycling between-1.2 V and 0.8 V(versus SCE).In 0.1 mol/L phosphate buffer solution(pH 6.0),a couple of redox peaks were observed.The cathodic and anodic peak [potentials were-0.593 9 V and-0.464 9 V(versus, SCE).respectively.Further investigation suggested that only the oxidation waves exhibited good inhibitory electrochemical activity towards H2O2.Based on these,a new inhibitory electrochemical method for determination of H2O2 Was proposed.The inhibitory electrochemical currents were linearly related to the concentration of H2O2 in the range of 0 to 2.73×10-8mol·L-1 with a limit of detection of 1.11×10-1 mol·L-1.
