绍兴文理学院学报
紹興文理學院學報
소흥문이학원학보
Journal of Shaoxing University
2015年
9期
37-40
,共4页
石墨烯%铜%修饰电极%过氧化氢
石墨烯%銅%脩飾電極%過氧化氫
석묵희%동%수식전겁%과양화경
graphene%copper%modified eletrode%hydrogen peroxide
利用滴涂法制备石墨烯修饰电极,再利用循环伏安法制备石墨烯/铜修饰电极,并研究了该修饰电极对过氧化氢的电催化还原性能.研究结果表明,在pH=7.0的磷酸缓冲溶液中,此修饰电极对H2O2 的还原过程具有极好的催化效果.在该修饰电极上,H2O2 的还原电流在浓度为5.0×10-7~1. 0×10-5mol/L和1.0×10-5~5.0×10-3mol/L范围内分段呈良好的线性关系,检出限低至1×10-7mol/L,可用于微量过氧化氢的测定.
利用滴塗法製備石墨烯脩飾電極,再利用循環伏安法製備石墨烯/銅脩飾電極,併研究瞭該脩飾電極對過氧化氫的電催化還原性能.研究結果錶明,在pH=7.0的燐痠緩遲溶液中,此脩飾電極對H2O2 的還原過程具有極好的催化效果.在該脩飾電極上,H2O2 的還原電流在濃度為5.0×10-7~1. 0×10-5mol/L和1.0×10-5~5.0×10-3mol/L範圍內分段呈良好的線性關繫,檢齣限低至1×10-7mol/L,可用于微量過氧化氫的測定.
이용적도법제비석묵희수식전겁,재이용순배복안법제비석묵희/동수식전겁,병연구료해수식전겁대과양화경적전최화환원성능.연구결과표명,재pH=7.0적린산완충용액중,차수식전겁대H2O2 적환원과정구유겁호적최화효과.재해수식전겁상,H2O2 적환원전류재농도위5.0×10-7~1. 0×10-5mol/L화1.0×10-5~5.0×10-3mol/L범위내분단정량호적선성관계,검출한저지1×10-7mol/L,가용우미량과양화경적측정.
Graphene-modified electrode was prepared by drops of coating, then the stable electroactive thin film of copper nanoparticles was deposited on the surface of grapheme-modified electrode using cyclic voltam-metry, and the electrocatalytic performance of hydrogen peroxide at the modified electrode was studied. In pH=7. 0 phosphate buffer solution, the composite filim shows excellent electrocalytic activity for the reduction of H2O2. The reduction current is well- proportional to the concentration of H2O2 over the range of 5.0×10-7~1.0×10-5mol/L and 1.0×10-5~5.0×10-3mol/L, and when the detection limit of hydroquinone is estimated to be 1.0×10-7 mol/L, it can be used for the determination of trace hydrogen peroxide .
