Hydrothermal synthesis of single-crystal Cr-doped SrTiO3 for efficient visible-light responsive photocatalytic hydrogen evolution
Visible-light-driven Cr-doped SrTiO _3 nanocubes were successfully synthesized by hydrothermal method in alkaline KOH conditions. X-ray diffraction spectroscopy (XRD), Raman spectra, x-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and scanning electron microscopy (SEM)...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ab660d |
| _version_ | 1797747062234677248 |
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| author | Daixun Jiang Xun Sun Xilu Wu Liang Shi Fanglin Du |
| author_facet | Daixun Jiang Xun Sun Xilu Wu Liang Shi Fanglin Du |
| author_sort | Daixun Jiang |
| collection | DOAJ |
| description | Visible-light-driven Cr-doped SrTiO _3 nanocubes were successfully synthesized by hydrothermal method in alkaline KOH conditions. X-ray diffraction spectroscopy (XRD), Raman spectra, x-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and scanning electron microscopy (SEM) were used to characterize the samples, and the Cr-doped SrTiO _3 possess cubic morphology with about 30–50 nm in size, and single-crystal feature. In addition, the Cr-doped SrTiO _3 extended light-harvesting properties to visible-light region which was testified by UV–vis absorption spectra, and excellent charge transfer and separation efficiency were approved by photo fluorescence spectra (PL), electrochemical impedance spectroscopy (EIS) and photocurrent response measurements. Among the synthesized photocatalysts, SrTiO _3 nanocubes doped with 2% Cr by molar ratio exhibits the highest photocatalytic activity, achieving 11.66 μ mol of H _2 evolution during 5 h visible-light irradiation. This study provides a facile and effective way to enhance the performance of SrTiO _3 -based photocatalysts. |
| first_indexed | 2024-03-12T15:46:44Z |
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| id | doaj.art-252eee48056440cdb80e8cae3a988c77 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:46:44Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-252eee48056440cdb80e8cae3a988c772023-08-09T15:23:53ZengIOP PublishingMaterials Research Express2053-15912020-01-017101504710.1088/2053-1591/ab660dHydrothermal synthesis of single-crystal Cr-doped SrTiO3 for efficient visible-light responsive photocatalytic hydrogen evolutionDaixun Jiang0Xun Sun1Xilu Wu2Liang Shi3https://orcid.org/0000-0002-9005-3848Fanglin Du4College of Materials Science and Engineering, Qingdao University of Science and Technology , Zhengzhou Road 53, Qingdao 266042, Shandong Province, People’s Republic of ChinaCollege of Materials Science and Engineering, Qingdao University of Science and Technology , Zhengzhou Road 53, Qingdao 266042, Shandong Province, People’s Republic of ChinaCollege of Materials Science and Engineering, Qingdao University of Science and Technology , Zhengzhou Road 53, Qingdao 266042, Shandong Province, People’s Republic of ChinaCollege of Materials Science and Engineering, Qingdao University of Science and Technology , Zhengzhou Road 53, Qingdao 266042, Shandong Province, People’s Republic of ChinaCollege of Materials Science and Engineering, Qingdao University of Science and Technology , Zhengzhou Road 53, Qingdao 266042, Shandong Province, People’s Republic of ChinaVisible-light-driven Cr-doped SrTiO _3 nanocubes were successfully synthesized by hydrothermal method in alkaline KOH conditions. X-ray diffraction spectroscopy (XRD), Raman spectra, x-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and scanning electron microscopy (SEM) were used to characterize the samples, and the Cr-doped SrTiO _3 possess cubic morphology with about 30–50 nm in size, and single-crystal feature. In addition, the Cr-doped SrTiO _3 extended light-harvesting properties to visible-light region which was testified by UV–vis absorption spectra, and excellent charge transfer and separation efficiency were approved by photo fluorescence spectra (PL), electrochemical impedance spectroscopy (EIS) and photocurrent response measurements. Among the synthesized photocatalysts, SrTiO _3 nanocubes doped with 2% Cr by molar ratio exhibits the highest photocatalytic activity, achieving 11.66 μ mol of H _2 evolution during 5 h visible-light irradiation. This study provides a facile and effective way to enhance the performance of SrTiO _3 -based photocatalysts.https://doi.org/10.1088/2053-1591/ab660dstrontium titanate (SrTiO3)Cr dopinghydrogen evolutionphotocatalysis |
| spellingShingle | Daixun Jiang Xun Sun Xilu Wu Liang Shi Fanglin Du Hydrothermal synthesis of single-crystal Cr-doped SrTiO3 for efficient visible-light responsive photocatalytic hydrogen evolution Materials Research Express strontium titanate (SrTiO3) Cr doping hydrogen evolution photocatalysis |
| title | Hydrothermal synthesis of single-crystal Cr-doped SrTiO3 for efficient visible-light responsive photocatalytic hydrogen evolution |
| title_full | Hydrothermal synthesis of single-crystal Cr-doped SrTiO3 for efficient visible-light responsive photocatalytic hydrogen evolution |
| title_fullStr | Hydrothermal synthesis of single-crystal Cr-doped SrTiO3 for efficient visible-light responsive photocatalytic hydrogen evolution |
| title_full_unstemmed | Hydrothermal synthesis of single-crystal Cr-doped SrTiO3 for efficient visible-light responsive photocatalytic hydrogen evolution |
| title_short | Hydrothermal synthesis of single-crystal Cr-doped SrTiO3 for efficient visible-light responsive photocatalytic hydrogen evolution |
| title_sort | hydrothermal synthesis of single crystal cr doped srtio3 for efficient visible light responsive photocatalytic hydrogen evolution |
| topic | strontium titanate (SrTiO3) Cr doping hydrogen evolution photocatalysis |
| url | https://doi.org/10.1088/2053-1591/ab660d |
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