Modulating porous In2O3 nanonest like structures by Pr-Ag dopant ratio for enhanced methanol gas sensing properties

IF 3.7 1区化学 Q1 CHEMISTRY, ANALYTICAL

Sensors and Actuators B: Chemical Pub Date : 2025-10-10 DOI:10.1016/j.snb.2025.138937

Kairui Liu , Lei Cao , Jianing Liu , Lihao Lv , Chuantao Zhang , Senlin Li , Lingmin Yu , Xinhui Fan , Puhong Wang , Jingfeng Wang , Lei Guo , Zhijun Ding

{"title":"Modulating porous In2O3 nanonest like structures by Pr-Ag dopant ratio for enhanced methanol gas sensing properties","authors":"Kairui Liu , Lei Cao , Jianing Liu , Lihao Lv , Chuantao Zhang , Senlin Li , Lingmin Yu , Xinhui Fan , Puhong Wang , Jingfeng Wang , Lei Guo , Zhijun Ding","doi":"10.1016/j.snb.2025.138937","DOIUrl":null,"url":null,"abstract":"<div><div>In current research, In<sub>2</sub>O<sub>3</sub> is widely used as n-type semiconductor gas sensing materials for detecting toxic and hazardous gases. However, In<sub>2</sub>O<sub>3</sub> sensors still have disadvantages such as high working temperature and low response value. To address these challenges, Pr-Ag co-doped porous nanonest like In<sub>2</sub>O<sub>3</sub> was prepared by adjusting the doping molar ratio of Pr and Ag using a hydrothermal method. This sensor exhibits excellent methanol gas sensing properties, including a high gas response value of 21.6 (10 ppm), fast gas adsorption and desorption equilibrium (10 s/9 s), and a low operating temperature (175°C). The enhanced sensing mechanism was clarified through a combination of experiments and first-principles calculations. The results showed that after the co-doping of Pr and Ag, there was a higher adsorption energy, a narrower band gap, and a larger specific surface area, which significantly improved the gas sensing performance. The present work work open up a path for more accurate and better detection of methanol concentrations in industrial environments.</div></div>","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":"448 ","pages":"Article 138937"},"PeriodicalIF":3.7000,"publicationDate":"2025-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sensors and Actuators B: Chemical","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925400525017137","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}

引用次数: 0

Abstract

In current research, In₂O₃ is widely used as n-type semiconductor gas sensing materials for detecting toxic and hazardous gases. However, In₂O₃ sensors still have disadvantages such as high working temperature and low response value. To address these challenges, Pr-Ag co-doped porous nanonest like In₂O₃ was prepared by adjusting the doping molar ratio of Pr and Ag using a hydrothermal method. This sensor exhibits excellent methanol gas sensing properties, including a high gas response value of 21.6 (10 ppm), fast gas adsorption and desorption equilibrium (10 s/9 s), and a low operating temperature (175°C). The enhanced sensing mechanism was clarified through a combination of experiments and first-principles calculations. The results showed that after the co-doping of Pr and Ag, there was a higher adsorption energy, a narrower band gap, and a larger specific surface area, which significantly improved the gas sensing performance. The present work work open up a path for more accurate and better detection of methanol concentrations in industrial environments.

Abstract Image

查看原文本刊更多论文

用Pr-Ag掺杂比调制多孔In2O3纳米样结构增强甲醇气敏性能

在目前的研究中，In2O3作为n型半导体气敏材料被广泛用于检测有毒有害气体。但是，In2O3传感器仍然存在工作温度高、响应值低等缺点。为了解决这些问题，通过水热法调整Pr和Ag的掺杂摩尔比，制备了像In2O3这样的Pr-Ag共掺杂多孔纳米材料。该传感器具有优异的甲醇气体传感性能，包括21.6 （10ppm）的高气体响应值，快速的气体吸附和解吸平衡（10 s/9 s），低工作温度（175°C）。通过实验和第一性原理计算相结合，阐明了增强的传感机理。结果表明，Pr和Ag共掺杂后，吸附能更高，带隙更窄，比表面积更大，气敏性能显著提高。本研究为更准确、更好地检测工业环境中甲醇浓度开辟了一条道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Sensors and Actuators B: Chemical 工程技术-电化学

CiteScore

14.60

自引率

11.90%

发文量

1776

审稿时长

3.2 months

期刊介绍： Sensors & Actuators, B: Chemical is an international journal focused on the research and development of chemical transducers. It covers chemical sensors and biosensors, chemical actuators, and analytical microsystems. The journal is interdisciplinary, aiming to publish original works showcasing substantial advancements beyond the current state of the art in these fields, with practical applicability to solving meaningful analytical problems. Review articles are accepted by invitation from an Editor of the journal.