Ag-doped capsule-like tungsten oxide with controllable band structure and oxygen vacancy for highly efficient triethylamine sensing

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-04-04 DOI:10.1063/5.0266553

Hui Liang, Yan Liu, Jiuyu Li, Hu Ma, Ruihua Zhao, Jianping Du

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引用次数: 0

Abstract

The detection and portable monitoring of organic amine is necessary for hazardous substance warning, life, and health. Herein, capsule-like tungsten oxide nanoparticles (NPs) were prepared to detect triethylamine, and the gas-sensing property is further enhanced by adjusting oxygen vacancy and band structure by doping tungsten oxide with Ag NPs. As-prepared nanomaterial consists of well-dispersed nanoparticles with capsule-like shapes. More chemically adsorbed oxygen and oxygen vacancy are formed in Ag-doped tungsten oxide, and bandgap decreases compared with pristine tungsten oxide. The gas-sensing tests show that the optimal Ag-doped tungsten oxide (Ag/WO3) NPs-based sensor exhibits more than six times the response higher than that of pristine tungsten oxide toward 50 ppm triethylamine (TEA) at an optimal temperature of 220 °C, with a detection limit as low as 248 ppb. Notably, fast response and recovery time and anti-interference properties are remarkable, and the two-week stability is also satisfactory, which are superior to reported related materials. For real-time TEA detection, as-prepared Ag/WO3 is proved to be efficient sensing material for portable monitoring applications.

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.