{"title":"Ag@SnO2/g-C3N4三元纳米复合材料作为高效丙酮蒸气传感器","authors":"Yoshita Katiyar, Shivani Sangwan, Gagan Sharma, Mohit Kumar, Anshika Goyal, Manish Jain, Deshraj Meena","doi":"10.1002/slct.202404081","DOIUrl":null,"url":null,"abstract":"<p>Ternary nanocomposite of Ag modified SnO<sub>2</sub> (Ag@SnO<sub>2</sub>) nanoparticles and graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) nanosheets (Ag@SnO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>) have been successfully synthesized using a facile hydrothermal method. The synthesized nanostructures were subjected to various characterization techniques to investigate their structural, morphological, optical, and chemical properties. The XRD results confirm the crystalline nature and rutile phase of the synthesized SnO<sub>2</sub>-based nanostructures, while SEM and TEM revealed morphological characteristics of Ag@SnO<sub>2</sub> and high dispersion of Ag@SnO<sub>2</sub> nanoparticles on the surface of g-C<sub>3</sub>N<sub>4</sub> nanosheets. The gas sensing performance of the samples (Ag@SnO<sub>2</sub> and Ag@SnO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>) was evaluated towards 1 µL of acetone vapors in 2L sensing chamber at various operating temperatures. Ag@SnO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> based resistive gas sensor exhibited admirable sensitivity at (28%), which is ∼ 4 times higher than that of Ag@SnO<sub>2</sub> based sensor, and good repeatability towards acetone vapors at an operating temperature of 100 °C. The enhanced sensing results of Ag@SnO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>-based sensors at relatively low working temperatures are attributed to its high surface area (104.6 m<sup>2</sup>/g), reduced energy band gap from 2.8 eV to 2.4 eV, and strong interaction between Ag@SnO<sub>2</sub> nanoparticles and 2D g-C<sub>3</sub>N<sub>4</sub> nanosheets. Furthermore, a suitable sensing mechanism has been presented to explain the enhanced gas sensing properties of Ag@SnO<sub>2</sub> and Ag@SnO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> based resistive gas sensor.</p>","PeriodicalId":146,"journal":{"name":"ChemistrySelect","volume":"10 23","pages":""},"PeriodicalIF":2.0000,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ag@SnO2/g-C3N4 Ternary Nanocomposite as an Efficient Acetone Vapors Sensor\",\"authors\":\"Yoshita Katiyar, Shivani Sangwan, Gagan Sharma, Mohit Kumar, Anshika Goyal, Manish Jain, Deshraj Meena\",\"doi\":\"10.1002/slct.202404081\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Ternary nanocomposite of Ag modified SnO<sub>2</sub> (Ag@SnO<sub>2</sub>) nanoparticles and graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) nanosheets (Ag@SnO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>) have been successfully synthesized using a facile hydrothermal method. The synthesized nanostructures were subjected to various characterization techniques to investigate their structural, morphological, optical, and chemical properties. The XRD results confirm the crystalline nature and rutile phase of the synthesized SnO<sub>2</sub>-based nanostructures, while SEM and TEM revealed morphological characteristics of Ag@SnO<sub>2</sub> and high dispersion of Ag@SnO<sub>2</sub> nanoparticles on the surface of g-C<sub>3</sub>N<sub>4</sub> nanosheets. The gas sensing performance of the samples (Ag@SnO<sub>2</sub> and Ag@SnO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>) was evaluated towards 1 µL of acetone vapors in 2L sensing chamber at various operating temperatures. Ag@SnO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> based resistive gas sensor exhibited admirable sensitivity at (28%), which is ∼ 4 times higher than that of Ag@SnO<sub>2</sub> based sensor, and good repeatability towards acetone vapors at an operating temperature of 100 °C. The enhanced sensing results of Ag@SnO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub>-based sensors at relatively low working temperatures are attributed to its high surface area (104.6 m<sup>2</sup>/g), reduced energy band gap from 2.8 eV to 2.4 eV, and strong interaction between Ag@SnO<sub>2</sub> nanoparticles and 2D g-C<sub>3</sub>N<sub>4</sub> nanosheets. Furthermore, a suitable sensing mechanism has been presented to explain the enhanced gas sensing properties of Ag@SnO<sub>2</sub> and Ag@SnO<sub>2</sub>/g-C<sub>3</sub>N<sub>4</sub> based resistive gas sensor.</p>\",\"PeriodicalId\":146,\"journal\":{\"name\":\"ChemistrySelect\",\"volume\":\"10 23\",\"pages\":\"\"},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2025-06-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ChemistrySelect\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/slct.202404081\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ChemistrySelect","FirstCategoryId":"92","ListUrlMain":"https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/slct.202404081","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Ag@SnO2/g-C3N4 Ternary Nanocomposite as an Efficient Acetone Vapors Sensor
Ternary nanocomposite of Ag modified SnO2 (Ag@SnO2) nanoparticles and graphitic carbon nitride (g-C3N4) nanosheets (Ag@SnO2/g-C3N4) have been successfully synthesized using a facile hydrothermal method. The synthesized nanostructures were subjected to various characterization techniques to investigate their structural, morphological, optical, and chemical properties. The XRD results confirm the crystalline nature and rutile phase of the synthesized SnO2-based nanostructures, while SEM and TEM revealed morphological characteristics of Ag@SnO2 and high dispersion of Ag@SnO2 nanoparticles on the surface of g-C3N4 nanosheets. The gas sensing performance of the samples (Ag@SnO2 and Ag@SnO2/g-C3N4) was evaluated towards 1 µL of acetone vapors in 2L sensing chamber at various operating temperatures. Ag@SnO2/g-C3N4 based resistive gas sensor exhibited admirable sensitivity at (28%), which is ∼ 4 times higher than that of Ag@SnO2 based sensor, and good repeatability towards acetone vapors at an operating temperature of 100 °C. The enhanced sensing results of Ag@SnO2/g-C3N4-based sensors at relatively low working temperatures are attributed to its high surface area (104.6 m2/g), reduced energy band gap from 2.8 eV to 2.4 eV, and strong interaction between Ag@SnO2 nanoparticles and 2D g-C3N4 nanosheets. Furthermore, a suitable sensing mechanism has been presented to explain the enhanced gas sensing properties of Ag@SnO2 and Ag@SnO2/g-C3N4 based resistive gas sensor.
期刊介绍:
ChemistrySelect is the latest journal from ChemPubSoc Europe and Wiley-VCH. It offers researchers a quality society-owned journal in which to publish their work in all areas of chemistry. Manuscripts are evaluated by active researchers to ensure they add meaningfully to the scientific literature, and those accepted are processed quickly to ensure rapid online publication.