{"title":"纯TiO2/PSi和TiO2@Ag/PSi结构作为有毒气体的可控传感器","authors":"A. Abdullah, A. Haider, A. A. Jabbar","doi":"10.3934/matersci.2022031","DOIUrl":null,"url":null,"abstract":"<abstract> <p>In this research, two pellets of titanium dioxide TiO<sub>2</sub> were prepared at room temperature. The first was pure titanium dioxide, and the other was doped with silver (2.5%). The pellets were deposited on porous silicon (PSi) with the pulsed laser deposition (PLD) technique. The results of scanning electron microscopy and energy-dispersive X-ray spectroscopy showed improvements in the surface morphologies of the TiO<sub>2</sub>/PSi and TiO<sub>2</sub>@Ag/PSi composites. The composites were then tested as CO<sub>2</sub> gas sensors. The electrical measurements of the composites showed a decrease in the electrical resistance of the CO<sub>2</sub> gas sensor doped with a metal. Sensitivity to CO<sub>2</sub> increased to up to 55% in Ag-doped TiO<sub>2</sub> film with a concentration of 2.5%, and the highest sensitivity value was obtained in the pure titanium dioxide film (26%).</p> </abstract>","PeriodicalId":7670,"journal":{"name":"AIMS Materials Science","volume":null,"pages":null},"PeriodicalIF":1.4000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Pure TiO2/PSi and TiO2@Ag/PSi structures as controllable sensor for toxic gases\",\"authors\":\"A. Abdullah, A. Haider, A. A. Jabbar\",\"doi\":\"10.3934/matersci.2022031\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<abstract> <p>In this research, two pellets of titanium dioxide TiO<sub>2</sub> were prepared at room temperature. The first was pure titanium dioxide, and the other was doped with silver (2.5%). The pellets were deposited on porous silicon (PSi) with the pulsed laser deposition (PLD) technique. The results of scanning electron microscopy and energy-dispersive X-ray spectroscopy showed improvements in the surface morphologies of the TiO<sub>2</sub>/PSi and TiO<sub>2</sub>@Ag/PSi composites. The composites were then tested as CO<sub>2</sub> gas sensors. The electrical measurements of the composites showed a decrease in the electrical resistance of the CO<sub>2</sub> gas sensor doped with a metal. Sensitivity to CO<sub>2</sub> increased to up to 55% in Ag-doped TiO<sub>2</sub> film with a concentration of 2.5%, and the highest sensitivity value was obtained in the pure titanium dioxide film (26%).</p> </abstract>\",\"PeriodicalId\":7670,\"journal\":{\"name\":\"AIMS Materials Science\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.4000,\"publicationDate\":\"2022-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"AIMS Materials Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.3934/matersci.2022031\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"AIMS Materials Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3934/matersci.2022031","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Pure TiO2/PSi and TiO2@Ag/PSi structures as controllable sensor for toxic gases
In this research, two pellets of titanium dioxide TiO2 were prepared at room temperature. The first was pure titanium dioxide, and the other was doped with silver (2.5%). The pellets were deposited on porous silicon (PSi) with the pulsed laser deposition (PLD) technique. The results of scanning electron microscopy and energy-dispersive X-ray spectroscopy showed improvements in the surface morphologies of the TiO2/PSi and TiO2@Ag/PSi composites. The composites were then tested as CO2 gas sensors. The electrical measurements of the composites showed a decrease in the electrical resistance of the CO2 gas sensor doped with a metal. Sensitivity to CO2 increased to up to 55% in Ag-doped TiO2 film with a concentration of 2.5%, and the highest sensitivity value was obtained in the pure titanium dioxide film (26%).
期刊介绍:
AIMS Materials Science welcomes, but not limited to, the papers from the following topics: · Biological materials · Ceramics · Composite materials · Magnetic materials · Medical implant materials · New properties of materials · Nanoscience and nanotechnology · Polymers · Thin films.