材料科学
碳化
检出限
循环伏安法
电化学气体传感器
微分脉冲伏安法
碳纤维
电化学
热解
多孔性
化学工程
电极
无机化学
色谱法
复合材料
化学
扫描电子显微镜
复合数
工程类
物理化学
作者
Guoping Wang,NuerbiYayalikun,Xamxikamar Mamat,Yongtao Li,Xun Hu,Ping Wang,Xuelei Xin,Guangzhi Hu
出处
期刊:Science of Advanced Materials
[American Scientific Publishers]
日期:2020-03-01
卷期号:12 (3): 376-382
被引量:19
标识
DOI:10.1166/sam.2020.3567
摘要
In this study, the method for detection of chloramphenicol was investigated by electrochemical sensor; the sensor was constructed by biomass derived porous carbon. At first, porous carbon doped with hetroatoms (nitrogen, sulfur, phosphorus) was synthesized based on the use of pyrolysis and high temperature carbonization methods. Elaeagnusangustifolia L. gum was used as the carbon source in the facile template-free process. The biomass derived porous carbon was then used as the active electrode material for antibiotic sensing. The chemically modified electrodes properties were studied with the cyclic voltammetry and differential pulse voltammetry methods. The effects of the scan rate, accumulation time and pH, were carefully considered. Comparison with other working electrodes at the optimized conditions indicated that the N, S, P triple doped porous carbon modified glassy carbon electrode appeared a well-defined reduction peak towards chloramphenicol. The linear concentration response of chloramphenicol ranged from 1 to 40 μ M ( R =0.9903) and 50 to 500 μ M ( R =0.9923), and a low detection limit of 0.01 μ M (S/N=3). Furthermore, the constructed novel electrochemical sensor was used for detection of chloramphenicol in real samples and achieved satisfactory recovers.
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