An innovative p-type delafossite AgNiO2 nanoparticles gas sensor for detection of allyl mercaptan down to sub-ppm level

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2025-02-13 DOI:10.1016/j.jallcom.2025.179200

Guanshuo Jiao , Yunkuan Wei , Defeng Chen , Hai Liu , Longlong Chen , Wenhuan Zhu

{"title":"An innovative p-type delafossite AgNiO2 nanoparticles gas sensor for detection of allyl mercaptan down to sub-ppm level","authors":"Guanshuo Jiao , Yunkuan Wei , Defeng Chen , Hai Liu , Longlong Chen , Wenhuan Zhu","doi":"10.1016/j.jallcom.2025.179200","DOIUrl":null,"url":null,"abstract":"<div><div>Exhaled volatile organic compounds, which serve as the significant biomarkers of human health, are still challenging to be detected at a trace amount. Metal oxide semiconductors are considered as promising candidates for detecting organic gases at low concentrations due to their outstanding chemiresistive effect. Herein, an innovative gas sensor utilizing p-type delafossite AgNiO<sub>2</sub> nanoparticles is presented, which exhibits a remarkable susceptibility to allyl mercaptan, an indicator of psychological stress, with a high response (84.3–20 ppm) and the trace detection limit down to 28 ppb at a low operating temperature of 120℃. The theoretical analysis reveals that the calculated adsorption energy and Bader charge have remarkable counterpart in the selectivity, which implies that the gas sensing performance can be attributed to the predominant gaseous adsorption followed by high charge transfer efficiency. This proposed gas sensor represents a new approach to the trace detection of exhaled organic gases by optimizing the chemiresistive material systems.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1018 ","pages":"Article 179200"},"PeriodicalIF":6.3000,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Alloys and Compounds","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925838825007583","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Exhaled volatile organic compounds, which serve as the significant biomarkers of human health, are still challenging to be detected at a trace amount. Metal oxide semiconductors are considered as promising candidates for detecting organic gases at low concentrations due to their outstanding chemiresistive effect. Herein, an innovative gas sensor utilizing p-type delafossite AgNiO₂ nanoparticles is presented, which exhibits a remarkable susceptibility to allyl mercaptan, an indicator of psychological stress, with a high response (84.3–20 ppm) and the trace detection limit down to 28 ppb at a low operating temperature of 120℃. The theoretical analysis reveals that the calculated adsorption energy and Bader charge have remarkable counterpart in the selectivity, which implies that the gas sensing performance can be attributed to the predominant gaseous adsorption followed by high charge transfer efficiency. This proposed gas sensor represents a new approach to the trace detection of exhaled organic gases by optimizing the chemiresistive material systems.

查看原文本刊更多论文

一种创新的p型delafoste AgNiO2纳米颗粒气体传感器，用于检测亚ppm水平的烯丙基硫醇

呼气中的挥发性有机化合物是人类健康的重要生物标志物，但在痕量检测方面仍然具有挑战性。金属氧化物半导体由于其优异的化学电阻效应，被认为是检测低浓度有机气体的有希望的候选者。本文利用p型delafosite AgNiO2纳米颗粒设计了一种新型气体传感器，该传感器对丙烯硫醇（心理应激指标）具有显著的敏感性，在120℃的低温下具有高响应（84.3 ~ 20 ppm），痕量检测限低至28 ppb。理论分析表明，计算得到的吸附能和Bader电荷在选择性上有显著的对应关系，说明气敏性能主要是由于气体吸附为主，电荷转移效率高。本文提出的气体传感器通过优化化学阻性材料体系，为呼出有机气体的痕量检测提供了一种新方法。

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

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.