A new method on fabrication of cobalt hexacyanoferrate modified glassy carbon(CoHCF/GC) electrode is described. The method is easy to manipulate and control the coverage of CoHCF on the surface of the GC electrode. Th...A new method on fabrication of cobalt hexacyanoferrate modified glassy carbon(CoHCF/GC) electrode is described. The method is easy to manipulate and control the coverage of CoHCF on the surface of the GC electrode. The CoHCF/GC electrode shows electrocatalytic activity towards the redox reaction of dopamine(DA) in the phosphate buffer solution with a decreasing of the overpotential of 140 mV. The reaction rate constant of the dopamine oxidation at the CoHCF/GC electrode is determined with rotating disk electrode measurements.展开更多
以铁氰化钴(Co-PBA)纳米立方体为模板和前体,用水热碱处理得到其衍生物。利用扫描电镜、X射线粉末衍射仪、红外光谱和N 2吸脱附分析仪对衍生物的形貌和微观结构进行表征,并用循环伏安法和电流充放电法评价其电化学性能。结果表明:在100...以铁氰化钴(Co-PBA)纳米立方体为模板和前体,用水热碱处理得到其衍生物。利用扫描电镜、X射线粉末衍射仪、红外光谱和N 2吸脱附分析仪对衍生物的形貌和微观结构进行表征,并用循环伏安法和电流充放电法评价其电化学性能。结果表明:在100℃条件下使用0.2 M NaOH水热碱处理8 h后,铁氰化钴转变为介孔的氢氧化钴纳米立方体,比表面积为126 m 2/g;当电流密度为1 A/g时,比电容可达到428 F/g。展开更多
文摘A new method on fabrication of cobalt hexacyanoferrate modified glassy carbon(CoHCF/GC) electrode is described. The method is easy to manipulate and control the coverage of CoHCF on the surface of the GC electrode. The CoHCF/GC electrode shows electrocatalytic activity towards the redox reaction of dopamine(DA) in the phosphate buffer solution with a decreasing of the overpotential of 140 mV. The reaction rate constant of the dopamine oxidation at the CoHCF/GC electrode is determined with rotating disk electrode measurements.
文摘以铁氰化钴(Co-PBA)纳米立方体为模板和前体,用水热碱处理得到其衍生物。利用扫描电镜、X射线粉末衍射仪、红外光谱和N 2吸脱附分析仪对衍生物的形貌和微观结构进行表征,并用循环伏安法和电流充放电法评价其电化学性能。结果表明:在100℃条件下使用0.2 M NaOH水热碱处理8 h后,铁氰化钴转变为介孔的氢氧化钴纳米立方体,比表面积为126 m 2/g;当电流密度为1 A/g时,比电容可达到428 F/g。
