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采用激光直写技术原位合成了氧化锌/石墨烯(ZnO/LIG)电极，构建了一种信号翻转型光电化学(PEC)传感器用于检测二茂铁(Fc)。在存在目标物Fc时，电极信号从阳极光电流变成阴极光电流，光电信号极性发生明显翻转，有效消除了背景信号干扰，提高了准确度。探究了ZnO/LIG比例、烘干温度和激光直写功率对PEC传感器性能的影响。结果表明，所构建的PEC传感器对10～300μmol·L-1浓度的Fc具有较好的响应，且呈现良好的线性关系，检出限为0.57μmol·L-1。同时具有较高的选择性和灵敏度，以及良好的稳定性和重现性。
Abstract：A signal inversion photoelectrochemical(PEC) sensor was constructed for the detection of ferrocene(Fc) by in situ synthesis of a zinc oxide/graphene(ZnO/LIG) electrode using laser direct writing technique.In the presence of the target Fc, the electrode signal changed from anodic photocurrent to cathodic photocurrent, and the polarity of the photoelectric signal was obviously reversed, which effectively eliminated the background signal interference and improved the accuracy.The effects of ZnO/LIG ratio, drying temperature and laser direct writing power on the performance of the PEC sensor were investigated.The results showed that the constructed PEC sensor had a good response to Fc concentrations from 10 to 300 μmol·L-1 and a good linearity with a detection limit of 0.57 μmol·L-1.It also had a high selectivity and sensitivity, as well as good stability and reproducibility.
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基本信息:
DOI：10.19724/j.cnki.jmju.2023.05.013
中图分类号:O657.1
引用信息:
[1]雷宇芬,张佳怡,林歆彤,等.激光直写ZnO/石墨烯的翻转型光电化学传感研究[J].闽江学院学报,2023,44(05):103-110.DOI:10.19724/j.cnki.jmju.2023.05.013.
基金信息:
国家自然科学基金(22004053,22008035); 福建省自然科学基金(2022J011114,2021J05203,2020J05131)
2023-06-17
2023
2023-06-29
2023-10-10
2023
1
2023-09-25
2023-09-25