- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
Photoelectrochemical-assisted batch injection analysis (PEC-BIA) of glucose exploiting visible LED light as an excitation source
摘要： This work describes the development of a novel method for glucose determination exploiting a photoelectrochemical-assisted batch injection analysis cell designed and constructed with the aid of 3D printer technology. The PEC-BIA cell was coupled to a LED lamp in order to control the incidence of light on the Cu2O/Ni(OH)2/FTO photoelectroactive platform. The electrochemical characteristics of Cu2O/Ni(OH)2/FTO photoelectroactive platform were evaluated by cyclic voltammetry, amperometry, and electrochemical impedance spectroscopy. The PEC-BIA cell presented linear response range, limit of detection based on a signal-to-noise ratio of three, and sensitivity of 1 – 1000 μmol L-1, 0.76 μmol L-1 and 0.578 μA L μmol-1, respectively. The PEC-BIA method presented a mean value of the recovery values of 97.0 % to 102.0 % when it was applied to glucose determination in artificial blood plasma samples which indicates the promising performance of the proposed system to determine glucose.
关键词： Photoelectrochemistry,Visible LED light,Glucose,Batch injection analysis,3D-Printing,Cu2O/Ni(OH)2
更新于2025-09-23 15:21:01
-
Synthesis of hierarchical Cu2O octahedra@Ni(OH)2 nanosheets core-shell heterostructures for high-performance supercapacitor
摘要： In this work, we report the controllable preparation of hierarchical Cu2O octahedra@Ni(OH)2 nanosheets core-shell heterostructures and their application in high-performance supercapacitors. Cu2O octahedra are initially directly grown on Ni foam via a facile solvothermal reaction, followed by the covering of Ni(OH)2 nanosheets through a controllable electrodeposition method. The prepared Cu2O@Ni(OH)2 core-shell heterostructures were found to exhibit a specific capacitance of up to 892 F g?1 and a capacitance retention of 95% after 5000 cycles at 5 A g?1. Such good electrochemical performance is believed to arise from its unique octahedra@nanosheets core-shell heterostructures and synergistic effect of the Cu2O and Ni(OH)2 components. Moreover, the assembled Cu2O@Ni(OH)2//active carbon asymmetric supercapacitor device could deliver an energy density of 34.8 W h kg?1 at a power density of 798 W kg?1 at 1 A g?1. Our findings not only suggest the great potential of the prepared Cu2O@Ni(OH)2 core-shell heterostructures for use in energy storage devices, but also showcase an alternative approach to construct the composite electrodes with high electrochemical performance.
关键词： Electrodeposition,Core-shell heterostructure,Cu2O,Ni(OH)2,Supercapacitor
更新于2025-09-09 09:28:46