João V.N. de Palma , Ariadne C. Catto , Marisa C. de Oliveira , Renan A.P. Ribeiro , Marcio D. Teodoro , Luís F. da Silva
{"title":"SnO2纳米粒子光辅助臭氧气敏性能:实验和理论见解","authors":"João V.N. de Palma , Ariadne C. Catto , Marisa C. de Oliveira , Renan A.P. Ribeiro , Marcio D. Teodoro , Luís F. da Silva","doi":"10.1016/j.snr.2022.100081","DOIUrl":null,"url":null,"abstract":"<div><p>We report herein an investigation on the ozone gas-sensing performance at room temperature of SnO<sub>2</sub> nanoparticles assisted by a light-emitting diode. X-ray diffraction and high-resolution transmission electron microscopy analyses indicated the nanocrystalline characteristics of the SnO<sub>2</sub> particles after heat treatment. Besides, optical measurements pointed out that the nanoparticles presented an optical gap of approximately 3.8 eV with a broad photoluminescence emission at around 625 nm, which was linked to the presence of oxygen vacancies, suggested by XPS analysis. With regard to the light-assisted gas-sensing measurements, electrical analysis revealed a clear dependence of the ozone sensing performance on the wavelength of the source of illumination chosen, with the highest ozone response being reached upon excitation in the ultraviolet region. Theoretical calculations showed that the (110) surface could increase the stability of photogenerated carriers and contribute to enhancing the gas-sensing features under ultraviolet excitation due to the presence of [SnO<sub>6</sub>] and [SnO<sub>5</sub>] clusters, which are capable of inducing an electron-hole dissociation and a reliable chemical environment for O<sub>3</sub> interaction.</p></div>","PeriodicalId":426,"journal":{"name":"Sensors and Actuators Reports","volume":null,"pages":null},"PeriodicalIF":6.5000,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Light-assisted ozone gas-sensing performance of SnO2 nanoparticles: Experimental and theoretical insights\",\"authors\":\"João V.N. de Palma , Ariadne C. Catto , Marisa C. de Oliveira , Renan A.P. Ribeiro , Marcio D. Teodoro , Luís F. da Silva\",\"doi\":\"10.1016/j.snr.2022.100081\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>We report herein an investigation on the ozone gas-sensing performance at room temperature of SnO<sub>2</sub> nanoparticles assisted by a light-emitting diode. X-ray diffraction and high-resolution transmission electron microscopy analyses indicated the nanocrystalline characteristics of the SnO<sub>2</sub> particles after heat treatment. Besides, optical measurements pointed out that the nanoparticles presented an optical gap of approximately 3.8 eV with a broad photoluminescence emission at around 625 nm, which was linked to the presence of oxygen vacancies, suggested by XPS analysis. With regard to the light-assisted gas-sensing measurements, electrical analysis revealed a clear dependence of the ozone sensing performance on the wavelength of the source of illumination chosen, with the highest ozone response being reached upon excitation in the ultraviolet region. Theoretical calculations showed that the (110) surface could increase the stability of photogenerated carriers and contribute to enhancing the gas-sensing features under ultraviolet excitation due to the presence of [SnO<sub>6</sub>] and [SnO<sub>5</sub>] clusters, which are capable of inducing an electron-hole dissociation and a reliable chemical environment for O<sub>3</sub> interaction.</p></div>\",\"PeriodicalId\":426,\"journal\":{\"name\":\"Sensors and Actuators Reports\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":6.5000,\"publicationDate\":\"2022-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Sensors and Actuators Reports\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S266605392200008X\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"BIOTECHNOLOGY & APPLIED MICROBIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sensors and Actuators Reports","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S266605392200008X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}
Light-assisted ozone gas-sensing performance of SnO2 nanoparticles: Experimental and theoretical insights
We report herein an investigation on the ozone gas-sensing performance at room temperature of SnO2 nanoparticles assisted by a light-emitting diode. X-ray diffraction and high-resolution transmission electron microscopy analyses indicated the nanocrystalline characteristics of the SnO2 particles after heat treatment. Besides, optical measurements pointed out that the nanoparticles presented an optical gap of approximately 3.8 eV with a broad photoluminescence emission at around 625 nm, which was linked to the presence of oxygen vacancies, suggested by XPS analysis. With regard to the light-assisted gas-sensing measurements, electrical analysis revealed a clear dependence of the ozone sensing performance on the wavelength of the source of illumination chosen, with the highest ozone response being reached upon excitation in the ultraviolet region. Theoretical calculations showed that the (110) surface could increase the stability of photogenerated carriers and contribute to enhancing the gas-sensing features under ultraviolet excitation due to the presence of [SnO6] and [SnO5] clusters, which are capable of inducing an electron-hole dissociation and a reliable chemical environment for O3 interaction.
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.