Highly sensitive acetone gas sensor based on gold nanoparticles modified W18O49 porous polymeric spheres

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS Journal of Sol-Gel Science and Technology Pub Date : 2024-05-17 DOI:10.1007/s10971-024-06415-8

Ke Zhang, Pengdang Zhu, Yunsheng Li, Hang Wei, Ruiyu Zhang

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Abstract

Nanogold-modified W₁₈O₄₉ porous polymer spheres were fabricated using a two-step solvothermal method. The material was characterized in various ways by XRD and SEM. The results show that the material is highly crystalline with a porous surface with pore diameters of around 9.0 nm, and that the addition of gold increases the percentage of adsorbed oxygen content from 20.7% to 55.1%. The gas sensitivity test results indicated that the nanogold-modified W₁₈O₄₉ porous polymer spheres achieved a wide detection range of 10–500 ppm acetone, the optimal working temperature was reduced from 280 °C to 220 °C, the sensitivity for 100 ppm acetone was increased by 2.57 times to 66, the response/recovery time was drastically shortened to 5 s/12 s, and the response to acetone was much higher than that of other gases. Excellent selectivity and excellent stability over 35 days were achieved. Gold-modified W₁₈O₄₉ porous polymer spheres have the potential for good acetone gas detection and can potentially be used in high-performance sensors.

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基于金纳米粒子修饰的 W18O49 多孔聚合物球的高灵敏丙酮气体传感器

采用两步溶热法制备了纳米金修饰的 W18O49 多孔聚合物球。通过 XRD 和 SEM 对材料进行了多方面的表征。结果表明，该材料具有高结晶性，表面多孔，孔径约为 9.0 nm，金的加入使吸附氧含量的百分比从 20.7% 增加到 55.1%。气体灵敏度测试结果表明，纳米金改性的 W18O49 多孔聚合物球的检测范围宽达 10-500 ppm 丙酮，最佳工作温度从 280 °C 降至 220 °C，对 100 ppm 丙酮的灵敏度提高了 2.57 倍，达到 66，响应/回收时间大幅缩短至 5 s/12 s，对丙酮的响应远高于其他气体。在 35 天内实现了极佳的选择性和稳定性。金改性 W18O49 多孔聚合物球具有良好的丙酮气体检测潜力，可用于高性能传感器。

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.