Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, China.
Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, China; Institute of Engineering Biology and Health, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, 310014, Zhejiang, China.
Anal Chim Acta. 2021 Sep 1;1176:338768. doi: 10.1016/j.aca.2021.338768. Epub 2021 Jun 19.
N-doped nickel carbide spheres (N-NiCSs) were synthesised for the first time by controlling the type of surfactant, surfactant-to-Ni molar ratio, reaction temperature, and reaction time. The morphology, composition, and electrochemical behaviour of the synthesised spheres revealed that the spheres presented a large specific surface area, abundant pores, and good conductivity, with excellent electrocatalytic performance. A glassy carbon electrode-modified with N-NiCSs was used for the simultaneous identification of hydroquinone (HQ), catechol (CC), and resorcinol (RS) utilising differential pulse voltammetry. The oxidation peaks of HQ, CC, and RS were observed at 9.8, 119, and 470 mV, respectively (vs. SCE). Under optimal conditions, the oxidation peak currents of HQ, CC, and RS were linear in the concentration ranges of 0.005-100 μM, 0.05-200 μM, and 5-500 μM, respectively. The detection limits of HQ, CC, and RS were 0.00152 μM, 0.015 μM, and 0.24 μM (S/N = 3), respectively. The sensitivities of HQ, CC, and RS were 4.635, 2.069, and 0.985 μA μM cm (S/N = 3), respectively. The fabricated sensor was successfully used to detect HQ, CC, and RS in hair dye, whitening cream, and local tap water samples. Moreover, the sensor presented a good repeatability, reproducibility, and stability during cosmetic testing and a relatively wide linear range, an ultralow detection limit, and an ultrahigh sensitivity.
氮掺杂碳化镍球（N-NiCSs）首次通过控制表面活性剂类型、表面活性剂与镍的摩尔比、反应温度和反应时间来合成。所合成的球体的形态、组成和电化学行为表明，这些球体具有大的比表面积、丰富的孔和良好的导电性，具有优异的电催化性能。使用玻碳电极修饰的 N-NiCSs 用于利用差分脉冲伏安法同时识别对苯二酚（HQ）、邻苯二酚（CC）和间苯二酚（RS）。HQ、CC 和 RS 的氧化峰分别在 9.8、119 和 470 mV 处观察到（相对于 SCE）。在最佳条件下，HQ、CC 和 RS 的氧化峰电流在 0.005-100 μM、0.05-200 μM 和 5-500 μM 的浓度范围内呈线性关系。HQ、CC 和 RS 的检测限分别为 0.00152 μM、0.015 μM 和 0.24 μM（S/N = 3）。HQ、CC 和 RS 的灵敏度分别为 4.635、2.069 和 0.985 μA μM cm（S/N = 3）。所制备的传感器成功用于检测染发剂、美白霜和当地自来水中的 HQ、CC 和 RS。此外，该传感器在化妆品测试中表现出良好的重复性、重现性和稳定性，并且具有相对较宽的线性范围、超低的检测限和超高的灵敏度。
Anal Bioanal Chem. 2020-2-10
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