基于范德华异质结的协同卤素键NO2化学传感器

IF 13.2 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-08-08 DOI:10.1016/j.cej.2025.166906

Wen Luo , Huan Liu , Zhen Zhu , Bo Wang , Wenxing Xu , Ximeng Luo , Chunhui Li , Yanyan Fu , Huizi Li , Huimin Cao , Wei Xu , Qingguo He , Jiangong Cheng

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引用次数: 0

摘要

基于碳纳米管的电化学传感器由于其优异的传感性能而受到越来越多的关注。然而，大量结构相似的干扰物种的存在严重限制了检测精度和相关应用，特别是对痕量大气污染物的检测，这需要更具体的主客识别位点，增强传感能力和灵敏度。在这项工作中，协同卤素键相互作用被用于在范德华（vdW）异质界面上构建特定的超分子识别位点。利用这些协同位点，化学传感器对结构高度相似的干扰气体（SO2和CO2）的NO2表现出特殊的特异性。同时，快速响应时间达到38.4 s，检出限低至1.8 ppb，在100 ppb NO2条件下，信号降幅保持在8.4 %。这项工作为开发具有更高选择性和灵敏度的电化学传感器提供了一个有前途的策略，为环境和工业监测的应用铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

van der Waals heterojunction-based NO2 chemosensor via a synergistic halogen bond site

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van der Waals heterojunction-based NO2 chemosensor via a synergistic halogen bond site

Carbon nanotube-based electrochemical sensors have attracted increasing attention due to their excellent sensing performance. However, the presence of numerous structurally similar interferent species severely limits detection accuracy and related applications, especially for trace atmospheric pollutant detection, which requires more specific host–guest recognition sites with enhanced sensing capability and sensitivity. In this work, synergistic halogen bonding interactions were employed to construct specific supramolecular recognition sites at a van der Waals (vdW) heterointerface. With these synergistic sites, the chemosensor exhibited exceptional specificity toward NO₂ over interfering gases (SO₂ and CO₂) with highly similar structures. Meanwhile, the rapid response time reached 38.4 s, and the detection limit was as low as 1.8 ppb, maintaining an 8.4 % signal decrease at 100 ppb NO₂. This work presents a promising strategy for developing electrochemical sensors with enhanced selectivity and sensitivity, paving the way for applications in environmental and industrial monitoring.

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.