Mohsen Shahini, Mehdi Boroujerdnia, Azadeh Haghighatzadeh
{"title":"ag2moo4包覆TiO2纳米/异质结构的结构、光学和紫外驱动-光催化性能","authors":"Mohsen Shahini, Mehdi Boroujerdnia, Azadeh Haghighatzadeh","doi":"10.1007/s41779-024-01112-9","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, Ag<sub>2</sub>MoO<sub>4</sub>-coated TiO<sub>2</sub> nano/heterostructures were prepared via a two-step co-precipitation method as efficient UV-light-driven photocatalysts. The structural and optical properties of the as-prepared photocatalysts were studied by XRD, FT-IR, Raman spectroscopy, FESEM-EDS analysis and UV-Vis DRS. The formation of Ag<sub>2</sub>MoO<sub>4</sub>-coated TiO<sub>2</sub> nano/heterostructures was confirmed by observing weakened TiO<sub>2</sub> diffraction peaks, broadened FTIR hydroxyl absorption bands, shifted Raman scatterings and enhanced optical absorptions compared to the pure sample. The FESEM-EDS studies allowed the detection of the composition and distribution of Ag<sub>2</sub>MoO<sub>4</sub> on the surface of TiO<sub>2</sub> structures. The photodegradation performance of the as-prepared Ag<sub>2</sub>MoO<sub>4</sub>-coated TiO<sub>2</sub> nano/heterostructures was evaluated by UV illumination over the degradation of methylene blue (MB). The photocatalytic results exhibited an improved photocatalytic performance for nano/heterostructured materials compared to sole TiO<sub>2</sub> photocatalyst relevant to the formed junction. The highest photocatalytic efficiency was found to be about 96.17% belonging to TiO<sub>2</sub>/Ag<sub>2</sub>MoO<sub>4</sub>-3 sample with an increase about 1.19 times higher than that of Pure-TiO<sub>2</sub> (80.47%). A photocatalytic mechanism and a charge transfer route was discussed based on a Type II alignment scheme to justify the enhanced photocatlytic activity of nano/heterostructured Ag<sub>2</sub>MoO<sub>4</sub>-coated TiO<sub>2</sub> materials. Our findings provides a platform to design water treatment systems for potential applications to reach fresh and safe water sources.</p></div>","PeriodicalId":673,"journal":{"name":"Journal of the Australian Ceramic Society","volume":"61 3","pages":"923 - 936"},"PeriodicalIF":2.1000,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Structural, optical, and UV-light-driven-photocatalytic properties of Ag2MoO4-coated TiO2 nano/heterostructures\",\"authors\":\"Mohsen Shahini, Mehdi Boroujerdnia, Azadeh Haghighatzadeh\",\"doi\":\"10.1007/s41779-024-01112-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this work, Ag<sub>2</sub>MoO<sub>4</sub>-coated TiO<sub>2</sub> nano/heterostructures were prepared via a two-step co-precipitation method as efficient UV-light-driven photocatalysts. The structural and optical properties of the as-prepared photocatalysts were studied by XRD, FT-IR, Raman spectroscopy, FESEM-EDS analysis and UV-Vis DRS. The formation of Ag<sub>2</sub>MoO<sub>4</sub>-coated TiO<sub>2</sub> nano/heterostructures was confirmed by observing weakened TiO<sub>2</sub> diffraction peaks, broadened FTIR hydroxyl absorption bands, shifted Raman scatterings and enhanced optical absorptions compared to the pure sample. The FESEM-EDS studies allowed the detection of the composition and distribution of Ag<sub>2</sub>MoO<sub>4</sub> on the surface of TiO<sub>2</sub> structures. The photodegradation performance of the as-prepared Ag<sub>2</sub>MoO<sub>4</sub>-coated TiO<sub>2</sub> nano/heterostructures was evaluated by UV illumination over the degradation of methylene blue (MB). The photocatalytic results exhibited an improved photocatalytic performance for nano/heterostructured materials compared to sole TiO<sub>2</sub> photocatalyst relevant to the formed junction. The highest photocatalytic efficiency was found to be about 96.17% belonging to TiO<sub>2</sub>/Ag<sub>2</sub>MoO<sub>4</sub>-3 sample with an increase about 1.19 times higher than that of Pure-TiO<sub>2</sub> (80.47%). A photocatalytic mechanism and a charge transfer route was discussed based on a Type II alignment scheme to justify the enhanced photocatlytic activity of nano/heterostructured Ag<sub>2</sub>MoO<sub>4</sub>-coated TiO<sub>2</sub> materials. Our findings provides a platform to design water treatment systems for potential applications to reach fresh and safe water sources.</p></div>\",\"PeriodicalId\":673,\"journal\":{\"name\":\"Journal of the Australian Ceramic Society\",\"volume\":\"61 3\",\"pages\":\"923 - 936\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2024-10-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the Australian Ceramic Society\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s41779-024-01112-9\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Australian Ceramic Society","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s41779-024-01112-9","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}
Structural, optical, and UV-light-driven-photocatalytic properties of Ag2MoO4-coated TiO2 nano/heterostructures
In this work, Ag2MoO4-coated TiO2 nano/heterostructures were prepared via a two-step co-precipitation method as efficient UV-light-driven photocatalysts. The structural and optical properties of the as-prepared photocatalysts were studied by XRD, FT-IR, Raman spectroscopy, FESEM-EDS analysis and UV-Vis DRS. The formation of Ag2MoO4-coated TiO2 nano/heterostructures was confirmed by observing weakened TiO2 diffraction peaks, broadened FTIR hydroxyl absorption bands, shifted Raman scatterings and enhanced optical absorptions compared to the pure sample. The FESEM-EDS studies allowed the detection of the composition and distribution of Ag2MoO4 on the surface of TiO2 structures. The photodegradation performance of the as-prepared Ag2MoO4-coated TiO2 nano/heterostructures was evaluated by UV illumination over the degradation of methylene blue (MB). The photocatalytic results exhibited an improved photocatalytic performance for nano/heterostructured materials compared to sole TiO2 photocatalyst relevant to the formed junction. The highest photocatalytic efficiency was found to be about 96.17% belonging to TiO2/Ag2MoO4-3 sample with an increase about 1.19 times higher than that of Pure-TiO2 (80.47%). A photocatalytic mechanism and a charge transfer route was discussed based on a Type II alignment scheme to justify the enhanced photocatlytic activity of nano/heterostructured Ag2MoO4-coated TiO2 materials. Our findings provides a platform to design water treatment systems for potential applications to reach fresh and safe water sources.
期刊介绍:
Publishes high quality research and technical papers in all areas of ceramic and related materials
Spans the broad and growing fields of ceramic technology, material science and bioceramics
Chronicles new advances in ceramic materials, manufacturing processes and applications
Journal of the Australian Ceramic Society since 1965
Professional language editing service is available through our affiliates Nature Research Editing Service and American Journal Experts at the author''s cost and does not guarantee that the manuscript will be reviewed or accepted