聚酰亚胺-多壁碳纳米管复合材料作为同时检测硝基苯酚异构体的电化学传感平台。

IF 8.1 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Jianzheng Wang , Chunying Liu , Ziao Di , Jiayu Huang , Hongjun Wei , Minjie Guo , Xiaoliang Yu , Nan Li , Jin Zhao , Bowen Cheng
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引用次数: 0

摘要

开发新型电极材料对于提高化学修饰电极的电化学传感性能至关重要。本研究提出了一种基于聚酰亚胺与多壁碳纳米管(PI-MWCNT)的复合电极材料,用于同时检测三种硝基苯酚异构体(NPs)。首先,制备了该复合材料,并利用显微镜、光谱技术和电化学实验对其进行了表征。结果表明,PI-MWCNT 具有多孔性和粗糙度,这有利于提高其传感性能。随后,在最佳条件下通过伏安实验评估了 PI-MWCNT 对 NPs 的检测能力。微分脉冲伏安法(DPV)曲线显示了 NPs 溶液中三个不同的阳极峰,2-NP 的线性范围为 1-300 μM,3-NP 为 0.25-250 μM,4-NP 为 0.25-400 μM。2-NP 和 3-NP 的检测限均为 0.50 μM,4-NP 为 0.64 μM。此外,所提出的电极材料还成功地应用于实际样品,实现了 92.9% 至 106% 的回收率。这项研究有助于开发更高效、更灵敏的电化学传感器。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Polyimide-multiwalled carbon nanotubes composite as electrochemical sensing platform for the simultaneous detection of nitrophenol isomers

Polyimide-multiwalled carbon nanotubes composite as electrochemical sensing platform for the simultaneous detection of nitrophenol isomers
Developing novel electrode materials plays a crucial role in enhancing the electrochemical sensing performance of chemically modified electrodes. This research presents a composite electrode material based on polyimide incorporated with multiwalled carbon nanotubes (PI-MWCNT) for the simultaneous detection of three nitrophenol isomers (NPs). First, the composite was prepared and characterized using microscopies, spectroscopic techniques, and electrochemical experiments. The results indicated that the PI-MWCNT exhibited porosity and roughness, which facilitated the enhancement of its sensing performance. Afterward, the detection capabilities of PI-MWCNT towards NPs were evaluated through voltammetry experiments under optimal conditions. The differential pulse voltammetry (DPV) curves revealed three distinct anodic peaks in the NPs solution, with linear ranges of 1–300 μM for 2-NP, 0.25–250 μM for 3-NP, and 0.25–400 μM for 4-NP. The limits of detection (LOD) were 0.50 μM for both 2-NP and 3-NP, and 0.64 μM for 4-NP. Furthermore, the proposed electrode material was successfully applied to real samples, achieving recovery rates ranging from 92.9% to 106%. This study could contribute to the development of more efficient and sensitive electrochemical sensors.
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来源期刊
Chemosphere
Chemosphere 环境科学-环境科学
CiteScore
15.80
自引率
8.00%
发文量
4975
审稿时长
3.4 months
期刊介绍: Chemosphere, being an international multidisciplinary journal, is dedicated to publishing original communications and review articles on chemicals in the environment. The scope covers a wide range of topics, including the identification, quantification, behavior, fate, toxicology, treatment, and remediation of chemicals in the bio-, hydro-, litho-, and atmosphere, ensuring the broad dissemination of research in this field.
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