Ke Zhang, Pengdang Zhu, Yunsheng Li, Hang Wei, Ruiyu Zhang
{"title":"Highly sensitive acetone gas sensor based on gold nanoparticles modified W18O49 porous polymeric spheres","authors":"Ke Zhang, Pengdang Zhu, Yunsheng Li, Hang Wei, Ruiyu Zhang","doi":"10.1007/s10971-024-06415-8","DOIUrl":null,"url":null,"abstract":"<p>Nanogold-modified W<sub>18</sub>O<sub>49</sub> 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 W<sub>18</sub>O<sub>49</sub> 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 W<sub>18</sub>O<sub>49</sub> porous polymer spheres have the potential for good acetone gas detection and can potentially be used in high-performance sensors.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Sol-Gel Science and Technology","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s10971-024-06415-8","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
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.
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.