Page 174 - 《精细化工》2021年第9期

第 38 卷第 9 期 精 细 化 工 Vol.38, No.9
202 1 年 9 月 FINE CHEMICALS Sept. 2021

有机电化学与工业
柚皮热解炭应用于对/邻苯二酚电化学传感器

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鲁猷栾 1,2 ，刘耀鹏 1,2 ，张沁怡 ，石 震 ，黄文胜 ，郑 寅 1,2*
（1. 风湿性疾病发生与干预湖北省重点实验室，湖北民族大学，湖北 恩施 445000；2. 湖北民族大学 化
学与环境工程学院，湖北 恩施 445000）

摘要：分别以氨水、NaOH 和 KOH 为活化剂对柚皮进行活化，然后通过一步热解法制备了生物炭材料。与其他
活化剂处理得到的生物炭相比，经 KOH 活化处理后制得的生物炭孔道分布最为丰富，同时表现出最大的比表面
积。通过滴涂法将该类生物炭分别修饰在玻碳电极表面，在磷酸盐缓冲液（PBS，pH=7.0）中用微分脉冲伏安
法（DPV）考察了对苯二酚（HQ）和邻苯二酚（CA）在不同电极上的电化学行为。结果表明，经 KOH 活化后制
得的生物炭修饰电极对 HQ 和 CA 同时检测效果最佳。在最优条件下和 0.5~100 μmol/L 浓度范围内时，HQ 和
CA 对该传感器的响应电流随浓度线性增大，检出限分别低至 0.023 和 0.040 μmol/L。同时，该传感器具有良好
的稳定性并可应用于 HQ 和 CA 的实际样品检测。
关键词：柚皮；生物炭；电化学传感器；酚类物质；活化剂；有机电化学
中图分类号：O657.1；X85 文献标识码：A 文章编号：1003-5214 (2021) 09-1888-08

Application of pyrolytic carbon from pomelo peel in electrochemical
sensor for hydroquinone and catechol

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LU Youluan , LIU Yaopeng , ZHANG Qinyi , SHI Zhen , HUANG Wensheng , ZHENG Yin 1,2*
（1. Hubei Provincial Key Laboratory of Occurrence and Intervention of Rheumatic Diseases, Hubei Minzu University,
Enshi 445000, Hubei, China; 2. College of Chemical and Environmental Engineering, Hubei Minzu University, Enshi
445000, Hubei, China）
Abstract: Biochar materials were prepared by one-step pyrolysis of pomelo peel, which was activated by
ammonia, sodium hydroxide and potassium hydroxide, respectively. Compared with the biochar materials
treated with other activators, the biochar material treated with potassium hydroxide exhibited the most
abundant pore distribution and the largest surface area. The biochar materials were modified on the surface of
glassy carbon electrode by droplet casting method, respectively. The electrochemical behavior of hydroquinone
(HQ) and catechol (CA) at different electrodes were investigated by differential pulse voltammetry (DPV)
in phosphate buffer solution (PBS, pH=7.0). The results indicated that the electrode modified by the biochar
material prepared by potassium hydroxide activation showed the best simultaneous detection effect for HQ
and CA. Under optimal conditions and in the concentration range of 0.5~100 μmol/L, the response current
of HQ and CA to the sensor increased linearly with the concentration, and the detection limit was as low as
0.023 and 0.040 μmol/L, respectively. Meanwhile, the sensor had good stability and could be applied to the
actual detection of HQ and CA in water samples.
Key words: pomelo peel; biochar; electrochemical sensor; phenolic substance; activator; organic
electrochemistry

收稿日期：2021-03-16; 定用日期：2021-05-12; DOI: 10.13550/j.jxhg.20210269
基金项目：国家自然科学基金（61361009）；风湿性疾病发生与干预湖北省重点实验室开放项目（OIR20016A）；湖北民族大学硕士研
究生科研创新资助项目（MYK2020002）；湖北民族大学大学生校级创新项目（X201910517115）
作者简介：鲁猷栾（1996—），男，硕士生，E-mail：2658289829@qq.com。联系人：郑 寅（1986—），男，副教授，E-mail：
zhengyin0617@163.com。