含能材料2025，Vol.33Issue(2)：148-155,8.DOI:10.11943/CJEM2024257
基于羧基化多壁碳纳米管修饰丝网印刷电极的叠氮酸气体检测
Detection of Hydrazoic Acid Gas by Carboxylated Multi-walled Carbon Nanotube Modified Screen Printed Electrode
林俊池 1霸书红 1韩纪旻 2杨利3
作者信息
- 1. 沈阳理工大学装备工程学院,辽宁 沈阳 110159
- 2. 北京理工大学爆炸科学与安全防护全国重点实验室,北京 100081
- 3. 北京理工大学爆炸科学与安全防护全国重点实验室,北京 100081||北京理工大学重庆创新中心,重庆 401120
- 折叠
摘要
Abstract
For the fast and easy detection of hydrazoic acid gas,an electrosensor for in-situ detection of hydrazoic acid was pre-pared based on the principle of electrochemical analysis using a screen-printed electrode as a substrate and modified with car-boxylated multi-walled carbon nanotubes.The electrochemical detection of hydrazoic acid was constructed by optimizing the solvent of the modification solution,the pH value of the detection solution,and the scan rate.The morphology and performance were characterized.The results show that the in-situ detection electrosensor for hydrazoic acid was prepared as a microelectrode with carboxylated multi-walled carbon nanotubes/glacial acetic acid modification solution,and its response current is about 121%higher than that of the unmodified electrode.The detection sensitivity is high at the solution pH 7.5.The square root of the scan rate is linearly related to the oxidation peak current,and the electrochemical oxidation of N3-is a diffusion-controlled pro-cess with good selectivity,stability,and reproducibility.The detection limit of N3-was 10.4 µmol·L-1 in the concentration range of 5×10-5-1×10-3 mol·L-1 N3-using the differential pulse voltammetry method.The prediction equations for the concentration of HN3 gas produced by different NaN3 feedstock contents at different times were derived from the online detection of the actual synthesis of HN3 gas,and the recoveries of HN3 are 96.8%-99.5%.In addition,the relationship between the concentration of synthesis HN3 gas and the response current has been established.关键词
叠氮酸气体(HN3)/功能化丝网印刷电极/电化学方法/检测Key words
hydrazoic gas(HN3)/functionalized screen-printed electrodes/electrochemical methods/detection分类
军事科技引用本文复制引用
林俊池,霸书红,韩纪旻,杨利..基于羧基化多壁碳纳米管修饰丝网印刷电极的叠氮酸气体检测[J].含能材料,2025,33(2):148-155,8.
