Hydrothermally grown WO3-SnO2 nanocomposites for efficient NO2 detection at low concentration

IF 8 1区化学 Q1 CHEMISTRY, ANALYTICAL

Sensors and Actuators B: Chemical Pub Date : 2025-03-28 DOI:10.1016/j.snb.2025.137711

Muhammad Javed Liaqat , Shahid Hussain , Arslan Shahid , Jesse Nii Okai Amu-Darko , Talib K. Ibrahim , Sobhy M. Ibrahim , Rajesh Kumar Manavalan , Xiangzhao Zhang , Guanjun Qiao , Guiwu Liu

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引用次数: 0

Abstract

Detecting trace amounts of hazardous gases at diverse temperature is crucial to protect both human health and the environment. In this study, WO₃-SnO₂ nanocomposites were prepared using a hydrothermal method. The gas-sensing characteristics of the prepared sensors for NO₂ have been investigated at temperatures ranging from 75 to 200°C. The results demonstrated that WO₃-SnO₂ nanocomposites exhibited a remarkable response of 1167, response/recovery time of 39.51 s/98.07 s towards 10 ppm NO₂ gas at an optimal temperature of 150°C. The development of n-n heterojunctions and higher available surface areas for chemisorbed NO₂ species could be responsible for the improved NO₂ sensing capabilities. This research demonstrates that the WO₃-SnO₂ composites is an attractive option for environmental NO₂ monitoring applications.

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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.