Surface reaction mechanism and characteristics of 2-dimensional TiO2 and 0-dimensional Ag nanocomposites specialized for H2S gas sensing at room temperature

IF 6.5 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Sensors and Actuators Reports Pub Date : 2025-01-28 DOI:10.1016/j.snr.2025.100290

Un Yup Lee , Min Young Kim , Kyu Hyoung Lee , Sol Han , Seung Yong Lee , Ali Mirzaei , Sun-Woo Choi , Myung Sik Choi , Changhyun Jin , Jeong Yun Hwang

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引用次数: 0

Abstract

In this study, we provide the synthesis of pristine TiO₂ nanosheets (NSs) via a simple flux method and their decoration with Ag nanoparticles (NPs) using a hydrothermal method for room-temperature H₂S gas sensing. Gas sensing experiments were conducted at 25 °C, evaluating the response of the Ag NPs-decorated TiO₂ NSs to various gases. Results demonstrated the gas sensor exhibited a superior response to H₂S gas compared to other gases, outperforming the pristine TiO₂ NSs gas sensor. Additionally, its response to H₂S gas surpassed that of the TiO₂ NSs gas sensor, highlighting the promising role of Ag decoration for H₂S gas detection. Sensing behavior in humid atmosphere was also investigated. The improved H₂S gas sensing performance can be attributed to the catalytic effect of Ag, the formation of Ag/TiO₂ heterojunctions, and the large surface area of the TiO₂ NSs. This study introduces a straightforward approach to enhance the gas sensing capabilities of metal oxide NSs.

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来源期刊

Sensors and Actuators Reports Multiple-

CiteScore

9.60

自引率

0.00%

发文量

审稿时长

49 days

期刊介绍： Sensors and Actuators Reports is a peer-reviewed open access journal launched out from the Sensors and Actuators journal family. Sensors and Actuators Reports is dedicated to publishing new and original works in the field of all type of sensors and actuators, including bio-, chemical-, physical-, and nano- sensors and actuators, which demonstrates significant progress beyond the current state of the art. The journal regularly publishes original research papers, reviews, and short communications. For research papers and short communications, the journal aims to publish the new and original work supported by experimental results and as such purely theoretical works are not accepted.