菏泽学院学报
菏澤學院學報
하택학원학보
JOURNAL OF HEZE UNIVERSITY
2012年
2期
56-59,75
,共5页
同元辉%郭宪厚%焦翠玲%王学亮%郁章玉
同元輝%郭憲厚%焦翠玲%王學亮%鬱章玉
동원휘%곽헌후%초취령%왕학량%욱장옥
羧基化石墨烯%玻碳电极%多巴胺%电催化性能
羧基化石墨烯%玻碳電極%多巴胺%電催化性能
최기화석묵희%파탄전겁%다파알%전최화성능
carbonylated graphene%glassy carbon electrode%dopamine%electro - catalytic performance
在玻碳电极表面修饰上羧基化石墨烯制得羧基化石墨烯修饰电极,以此电极为工作电极,研究了多巴胺在此电极上的电化学行为.在pH=3.0的Na:HPO4-C6H8O7,缓冲溶液中,氧化峰电流与多巴胺浓度在1.4×10^-3-1.8×10^-4moL/L的范围内呈良好的线性关系,检出限为5.0×10^-6mol/L.实验结果表明,玻碳电极经羧基化石墨烯修饰后对多巴胺具有明显的电催化作用,灵敏度明显提高.
在玻碳電極錶麵脩飾上羧基化石墨烯製得羧基化石墨烯脩飾電極,以此電極為工作電極,研究瞭多巴胺在此電極上的電化學行為.在pH=3.0的Na:HPO4-C6H8O7,緩遲溶液中,氧化峰電流與多巴胺濃度在1.4×10^-3-1.8×10^-4moL/L的範圍內呈良好的線性關繫,檢齣限為5.0×10^-6mol/L.實驗結果錶明,玻碳電極經羧基化石墨烯脩飾後對多巴胺具有明顯的電催化作用,靈敏度明顯提高.
재파탄전겁표면수식상최기화석묵희제득최기화석묵희수식전겁,이차전겁위공작전겁,연구료다파알재차전겁상적전화학행위.재pH=3.0적Na:HPO4-C6H8O7,완충용액중,양화봉전류여다파알농도재1.4×10^-3-1.8×10^-4moL/L적범위내정량호적선성관계,검출한위5.0×10^-6mol/L.실험결과표명,파탄전겁경최기화석묵희수식후대다파알구유명현적전최화작용,령민도명현제고.
Carbonylated graphene was used to modify glassy carbon electrode surface to prepare carhonylated graphene modified glassy carbon electrode, and the electrochemical behaviors of dopamine were studied on this mod- ified electrode. The experimental parameters such as the supporting electrolyte, buffer pH, the accumulation poten- tial and time, were optimized in detailed. The results showed that the oxidation peak currents varied linearly with the concentration of DA in the range froinl. 4 ×10^-3 mol/L to 1.8 ×10^-4mol/L and the detection limit was 5.0 ×10^-6mol/L, in pH =3.0 phosphate buffer solution.