Selective quantification of nitrogen dioxide in the presence of interfering gases via electronic modulation of MoS2 by Ru doping

IF 9.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Rare Metals Pub Date : 2025-01-28 DOI:10.1007/s12598-024-03162-1

Zong-Ke Li, Guo-Chen Qi, Wei-Fang Ma, Wei Zhong, Qi-Yan Wang, Rong-Han Wei, Tian-Shui Liang

{"title":"Selective quantification of nitrogen dioxide in the presence of interfering gases via electronic modulation of MoS2 by Ru doping","authors":"Zong-Ke Li, Guo-Chen Qi, Wei-Fang Ma, Wei Zhong, Qi-Yan Wang, Rong-Han Wei, Tian-Shui Liang","doi":"10.1007/s12598-024-03162-1","DOIUrl":null,"url":null,"abstract":"<div>Nitrogen dioxide (NO2) is a significant air pollutant with harmful effects on human health and the environment. Timely and accurate monitoring of NO2 concentrations is crucial for improving air quality and protecting public health. However, quantifying NO2 in the presence of other gases remains challenging. Herein, we integrate Ru onto the MoS2 surface to form Ru–S–Mo active sites, thereby tuning the electronic structure of MoS2 for enhanced NO2 detection. This sensor shows excellent sensitivity (29.7% at 100 × 10−6 NO2 and 25 °C), with a linear response to NO2 ranging from 0.5 to 200 × 10−6, and a significantly reduced response/recovery time from 160/3636 s for pure MoS2 to 58/427 s for Ru@MoS2 at 100 × 10−6 NO2. Additionally, the sensor is highly selective for NO2, exhibiting a response 14 times higher than for other gases, and possesses strong anti-interference capabilities, accurately quantifying NO2 in the presence of varying H2 concentrations (10 × 10−6–200 × 10−6) with a low RSD of 5.34%. A portable wireless NO2 monitoring system was successfully constructed using Ru@MoS2, enabling real-time gas leak detection (10 × 10−6–50 × 10−6) with hazard warnings and maintaining a stable response to NO2 over a 4-week period. This work extends the gas sensing applications of MoS2 and provides a portable, wireless, and high-selectivity NO2 sensing method for environmental monitoring and safety assurance.<h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3258 - 3268"},"PeriodicalIF":9.6000,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rare Metals","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12598-024-03162-1","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Nitrogen dioxide (NO₂) is a significant air pollutant with harmful effects on human health and the environment. Timely and accurate monitoring of NO₂ concentrations is crucial for improving air quality and protecting public health. However, quantifying NO₂ in the presence of other gases remains challenging. Herein, we integrate Ru onto the MoS₂ surface to form Ru–S–Mo active sites, thereby tuning the electronic structure of MoS₂ for enhanced NO₂ detection. This sensor shows excellent sensitivity (29.7% at 100 × 10⁻⁶ NO₂ and 25 °C), with a linear response to NO₂ ranging from 0.5 to 200 × 10⁻⁶, and a significantly reduced response/recovery time from 160/3636 s for pure MoS₂ to 58/427 s for Ru@MoS₂ at 100 × 10⁻⁶ NO₂. Additionally, the sensor is highly selective for NO₂, exhibiting a response 14 times higher than for other gases, and possesses strong anti-interference capabilities, accurately quantifying NO₂ in the presence of varying H₂ concentrations (10 × 10⁻⁶–200 × 10⁻⁶) with a low RSD of 5.34%. A portable wireless NO₂ monitoring system was successfully constructed using Ru@MoS₂, enabling real-time gas leak detection (10 × 10⁻⁶–50 × 10⁻⁶) with hazard warnings and maintaining a stable response to NO₂ over a 4-week period. This work extends the gas sensing applications of MoS₂ and provides a portable, wireless, and high-selectivity NO₂ sensing method for environmental monitoring and safety assurance.

Graphical abstract

查看原文本刊更多论文

钌掺杂对二硫化钼的电子调制，在干扰气体存在下选择性定量二氧化氮

二氧化氮（NO2）是一种重要的空气污染物，对人类健康和环境造成有害影响。及时准确地监测二氧化氮浓度对改善空气质量和保护公众健康至关重要。然而，在其他气体存在的情况下量化NO2仍然具有挑战性。在此，我们将Ru整合到MoS2表面形成Ru - s - mo活性位点，从而调整MoS2的电子结构以增强NO2的检测。该传感器具有优异的灵敏度（在100 × 10−6 NO2和25°C下为29.7%），对NO2的线性响应范围为0.5至200 × 10−6，并且在100 × 10−6 NO2下，响应/恢复时间从纯MoS2的160/3636 s显著降低到Ru@MoS2的58/427 s。此外，该传感器对NO2的选择性高，响应率是其他气体的14倍，并且具有较强的抗干扰能力，可以在不同H2浓度（10 × 10−6 - 200 × 10−6）下准确定量NO2， RSD低至5.34%。利用Ru@MoS2成功构建了便携式无线NO2监测系统，实现了实时气体泄漏检测（10 × 10−6 - 50 × 10−6）和危险预警，并在4周内保持对NO2的稳定响应。这项工作扩展了二硫化钼的气敏应用，为环境监测和安全保障提供了一种便携式、无线、高选择性的二氧化氮传感方法。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Rare Metals 工程技术-材料科学：综合

CiteScore

12.10

自引率

12.50%

发文量

2919

审稿时长

2.7 months

期刊介绍： Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.