文献类型： 外文期刊

作者： Liang, Wei ¹ ; Huang, Xin-Long ¹ ; Wang, Yan-Li ² ; Jing, Yang ¹ ; Yan, Fei-Yan ² ; Ning, De-Jiao ² ; Li, Tang ² ; Luo, Li-Hong ² ; Wei, Yu-Ning ² ; Yu, Ya ² ;

作者机构： 1.Nanning Normal Univ, Coll Chem & Mat Sci, Nanning 530001, Peoples R China

2.Guangxi Acad Agr Sci, Inst Agr Prod Qual Safety & Testing Technol, Nanning 530007, Peoples R China

关键词： Activators; Hierarchically porous carbon materials; Electrochemical sensing; Structureactivity relationship; Dihydroxybenzene isomers

期刊名称：CHINESE JOURNAL OF ANALYTICAL CHEMISTRY （ 影响因子：1.193； 五年影响因子：0.987 ）

ISSN： 0253-3820

年卷期： 2022 年 50 卷 6 期

页码：

收录情况： SCI

摘要： The hierarchically porous carbon materials were prepared with chitosan(CS)as carbon source, and NaCl, NaOH and Na2CO3 as activators. The morphology, porous structure, specific surface area and pore size distribution of the prepared carbon materials were characterized by scanning electron microscopy, X-ray diffraction, Raman spectrum and nitrogen adsorption-desorption isotherms, respectively. And the electrochemical properties of different carbon materials-modified electrode were studied by electrochemical techniques. Thus, structure-activity relationship between the morphology, structural and physicochemical parameters of different carbon materials and their electrochemical sensing properties were explored. The results showed that the hierarchically porous carbon material(CS-Na2CO3, prepared using Na2CO3 as activator)modified electrode had larger electrochemical active area, faster electron transfer rate and better electrocatalytic performance for three dihydroxybenzene isomers. A highperformance electrochemical sensing platform for simultaneous determination of hydroquinone, catechol and resorcinol was constructed based on the signal enhancement effect of CS-Na2CO3. The linear ranges for simultaneous determination of hydroquinone, catechol and resorcinol were 0.050- 1.5 mu mol/L, 0.050-1.5 mu mol/L and 0.50-15 mu mol/L, and the detection limits(3 sigma)were calculated to be 0.012, 0.017 and 0.29 mu mol/L, respectively. The prepared sensing platform demonstrated good accuracy in detection of dihydroxybenzene isomers in river water samples.