在WO3纳米片上进行Ag2O装饰，用于超灵敏的H2S检测，在低温下具有强大的抗湿性

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-06-02 DOI:10.1016/j.matlet.2025.138840

Jin-You Zong, Li-Juan Yue, Fei-Long Gong, Xuan-Yu Yang, Yong-Hui Zhang

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引用次数: 0

摘要

本文通过煅烧策略，对Ag纳米粒子修饰的WO3 （AWO）复合材料进行调制，设计了一种基于“氧空位-富电子Ag+”双活性中心的高性能H2S气体传感器。发现400℃煅烧（AWO-400）诱导WO3晶格重构生成高密度的OVs，并与富电子Ag+活性位点协同作用。优化后的AWO-400在1 ppm H2S条件下具有优异的响应性能（Ra/Rg = 377.667），响应/恢复时间仅为78/92 s，具有良好的耐湿性。本研究为金属氧化物的合成和高效气敏材料的设计提供了新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Ag2O decoration on WO3 nanosheets for ultra-sensitive H2S detection with robust humidity resistance at low temperatures

In this paper, a high-performance H₂S gas sensor based on ‘oxygen vacancy-electron-rich Ag⁺’ dual active centers were designed by modulating Ag nanoparticle-modified WO₃ (AWO) composites through a calcination strategy. It was found that 400 °C calcination (AWO-400) induced WO₃ lattice reconfiguration to generate high-density O_Vs and synergistic interaction with electron-rich Ag⁺ active sites. The optimized AWO-400 exhibits excellent response performance (R_a/R_g = 377.667) in 1 ppm H₂S with response/recovery times of only 78/92 s and possesses excellent humidity resistance. This study provides a new idea for the synthesis of the metal-oxide and the design of efficient gas-sensitive materials.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive