Li-wen Wang, Shou-guo Wu, Tian-yang Shi, Wei Wei, Pan Pan. Electrocatalytic Oxidation of Calcium Folinate on Carboxyl Graphene Modified CuxO/Cu Electrode[J]. Chinese Journal of Chemical Physics , 2016, 29(6): 729-734. doi: 10.1063/1674-0068/29/cjcp1604079
Citation: Li-wen Wang, Shou-guo Wu, Tian-yang Shi, Wei Wei, Pan Pan. Electrocatalytic Oxidation of Calcium Folinate on Carboxyl Graphene Modified CuxO/Cu Electrode[J]. Chinese Journal of Chemical Physics , 2016, 29(6): 729-734. doi: 10.1063/1674-0068/29/cjcp1604079

Electrocatalytic Oxidation of Calcium Folinate on Carboxyl Graphene Modified CuxO/Cu Electrode

doi: 10.1063/1674-0068/29/cjcp1604079
  • Received Date: 2016-04-17
  • Rev Recd Date: 2016-07-25
  • Carboxyl graphene modified CuxO/Cu electrode was fabricated. The bare copper electrode was firstly anodic polarized in 1.0 mol/L NaOH solution in order to get CuxO nanoparticles, then the carboxyl graphene (CG) was electrodeposited on the CuxO/Cu electrode by cyclic potential sweeping. The electrocatalytic oxidation behaviors of calcium folinate (CF) at the graphene modified CuxO/Cu electrode were investigated by cyclic voltammetry. A positive scan polarization reverse catalytic voltammetry was used to obtain the pure catalytic oxidation current. The graphene modified CuxO/Cu electrode was served as the electrochemical sensor of CF, a highly sensitivity of 22.0 μA·(μmol/μL)-1cm-2 was achieved, and the current response was linear with increasing CF concentration in the range of 2.0×10-7 mol/L to 2.0×10-5 mol/L, which crossed three orders of magnitude, and the detection limit was found 7.6×10-8 mol/L (S/N=3). In addition, the proposed sensor was successfully applied in determination of CF in drug sample.
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Electrocatalytic Oxidation of Calcium Folinate on Carboxyl Graphene Modified CuxO/Cu Electrode

doi: 10.1063/1674-0068/29/cjcp1604079

Abstract: Carboxyl graphene modified CuxO/Cu electrode was fabricated. The bare copper electrode was firstly anodic polarized in 1.0 mol/L NaOH solution in order to get CuxO nanoparticles, then the carboxyl graphene (CG) was electrodeposited on the CuxO/Cu electrode by cyclic potential sweeping. The electrocatalytic oxidation behaviors of calcium folinate (CF) at the graphene modified CuxO/Cu electrode were investigated by cyclic voltammetry. A positive scan polarization reverse catalytic voltammetry was used to obtain the pure catalytic oxidation current. The graphene modified CuxO/Cu electrode was served as the electrochemical sensor of CF, a highly sensitivity of 22.0 μA·(μmol/μL)-1cm-2 was achieved, and the current response was linear with increasing CF concentration in the range of 2.0×10-7 mol/L to 2.0×10-5 mol/L, which crossed three orders of magnitude, and the detection limit was found 7.6×10-8 mol/L (S/N=3). In addition, the proposed sensor was successfully applied in determination of CF in drug sample.

Li-wen Wang, Shou-guo Wu, Tian-yang Shi, Wei Wei, Pan Pan. Electrocatalytic Oxidation of Calcium Folinate on Carboxyl Graphene Modified CuxO/Cu Electrode[J]. Chinese Journal of Chemical Physics , 2016, 29(6): 729-734. doi: 10.1063/1674-0068/29/cjcp1604079
Citation: Li-wen Wang, Shou-guo Wu, Tian-yang Shi, Wei Wei, Pan Pan. Electrocatalytic Oxidation of Calcium Folinate on Carboxyl Graphene Modified CuxO/Cu Electrode[J]. Chinese Journal of Chemical Physics , 2016, 29(6): 729-734. doi: 10.1063/1674-0068/29/cjcp1604079
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