Aluminum Cation Doping in Ruddlesden-Popper Sr<sub>2</sub>TiO<sub>4</sub> Enables High-Performance Photocatalytic Hydrogen Evolution
Hydrogen (H<sub>2</sub>) is regarded as a promising and renewable energy carrier to achieve a sustainable future. Among the various H<sub>2</sub> production routes, photocatalytic water splitting has received particular interest; it strongly relies on the optical and structur...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Hydrogen |
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| Online Access: | https://www.mdpi.com/2673-4141/3/4/32 |
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| author | Jingsheng He Xiao Han Huimin Xiang Ran Ran Wei Wang Wei Zhou Zongping Shao |
| author_facet | Jingsheng He Xiao Han Huimin Xiang Ran Ran Wei Wang Wei Zhou Zongping Shao |
| author_sort | Jingsheng He |
| collection | DOAJ |
| description | Hydrogen (H<sub>2</sub>) is regarded as a promising and renewable energy carrier to achieve a sustainable future. Among the various H<sub>2</sub> production routes, photocatalytic water splitting has received particular interest; it strongly relies on the optical and structural properties of photocatalysts such as their sunlight absorption capabilities, carrier transport properties, and amount of oxygen vacancy. Perovskite oxides have been widely investigated as photocatalysts for photocatalytic water splitting to produce H<sub>2</sub> because of their distinct optical properties, tunable band gaps and excellent compositional/structural flexibility. Herein, an aluminum cation (Al<sup>3+</sup>) doping strategy is developed to enhance the photocatalytic performance of Ruddlesden-Popper (RP) Sr<sub>2</sub>TiO<sub>4</sub> perovskite oxides for photocatalytic H<sub>2</sub> production. After optimizing the Al<sup>3+</sup> substitution concentration, Sr<sub>2</sub>Ti<sub>0.9</sub>Al<sub>0.1</sub>O<sub>4</sub> exhibits a superior H<sub>2</sub> evolution rate of 331 μmol h<sup>−1</sup> g<sup>−1</sup>, which is ~3 times better than that of Sr<sub>2</sub>TiO<sub>4</sub> under full-range light illumination, due to its enhanced light harvesting capabilities, facilitated charge transfer, and tailored band structure. This work presents a simple and useful Al<sup>3+</sup> cation doping strategy to boost the photocatalytic performance of RP-phase perovskites for solar water splitting. |
| first_indexed | 2024-03-09T16:20:45Z |
| format | Article |
| id | doaj.art-79994ac211564e62acc17754ee17ee8f |
| institution | Directory Open Access Journal |
| issn | 2673-4141 |
| language | English |
| last_indexed | 2024-03-09T16:20:45Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Hydrogen |
| spelling | doaj.art-79994ac211564e62acc17754ee17ee8f2023-11-24T15:17:33ZengMDPI AGHydrogen2673-41412022-12-013450151110.3390/hydrogen3040032Aluminum Cation Doping in Ruddlesden-Popper Sr<sub>2</sub>TiO<sub>4</sub> Enables High-Performance Photocatalytic Hydrogen EvolutionJingsheng He0Xiao Han1Huimin Xiang2Ran Ran3Wei Wang4Wei Zhou5Zongping Shao6State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, ChinaState Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, ChinaWA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA 6845, AustraliaHydrogen (H<sub>2</sub>) is regarded as a promising and renewable energy carrier to achieve a sustainable future. Among the various H<sub>2</sub> production routes, photocatalytic water splitting has received particular interest; it strongly relies on the optical and structural properties of photocatalysts such as their sunlight absorption capabilities, carrier transport properties, and amount of oxygen vacancy. Perovskite oxides have been widely investigated as photocatalysts for photocatalytic water splitting to produce H<sub>2</sub> because of their distinct optical properties, tunable band gaps and excellent compositional/structural flexibility. Herein, an aluminum cation (Al<sup>3+</sup>) doping strategy is developed to enhance the photocatalytic performance of Ruddlesden-Popper (RP) Sr<sub>2</sub>TiO<sub>4</sub> perovskite oxides for photocatalytic H<sub>2</sub> production. After optimizing the Al<sup>3+</sup> substitution concentration, Sr<sub>2</sub>Ti<sub>0.9</sub>Al<sub>0.1</sub>O<sub>4</sub> exhibits a superior H<sub>2</sub> evolution rate of 331 μmol h<sup>−1</sup> g<sup>−1</sup>, which is ~3 times better than that of Sr<sub>2</sub>TiO<sub>4</sub> under full-range light illumination, due to its enhanced light harvesting capabilities, facilitated charge transfer, and tailored band structure. This work presents a simple and useful Al<sup>3+</sup> cation doping strategy to boost the photocatalytic performance of RP-phase perovskites for solar water splitting.https://www.mdpi.com/2673-4141/3/4/32Ruddlesden-Popper perovskite oxidesphotocatalysishydrogen evolutionaluminum cation dopingwater splitting |
| spellingShingle | Jingsheng He Xiao Han Huimin Xiang Ran Ran Wei Wang Wei Zhou Zongping Shao Aluminum Cation Doping in Ruddlesden-Popper Sr<sub>2</sub>TiO<sub>4</sub> Enables High-Performance Photocatalytic Hydrogen Evolution Hydrogen Ruddlesden-Popper perovskite oxides photocatalysis hydrogen evolution aluminum cation doping water splitting |
| title | Aluminum Cation Doping in Ruddlesden-Popper Sr<sub>2</sub>TiO<sub>4</sub> Enables High-Performance Photocatalytic Hydrogen Evolution |
| title_full | Aluminum Cation Doping in Ruddlesden-Popper Sr<sub>2</sub>TiO<sub>4</sub> Enables High-Performance Photocatalytic Hydrogen Evolution |
| title_fullStr | Aluminum Cation Doping in Ruddlesden-Popper Sr<sub>2</sub>TiO<sub>4</sub> Enables High-Performance Photocatalytic Hydrogen Evolution |
| title_full_unstemmed | Aluminum Cation Doping in Ruddlesden-Popper Sr<sub>2</sub>TiO<sub>4</sub> Enables High-Performance Photocatalytic Hydrogen Evolution |
| title_short | Aluminum Cation Doping in Ruddlesden-Popper Sr<sub>2</sub>TiO<sub>4</sub> Enables High-Performance Photocatalytic Hydrogen Evolution |
| title_sort | aluminum cation doping in ruddlesden popper sr sub 2 sub tio sub 4 sub enables high performance photocatalytic hydrogen evolution |
| topic | Ruddlesden-Popper perovskite oxides photocatalysis hydrogen evolution aluminum cation doping water splitting |
| url | https://www.mdpi.com/2673-4141/3/4/32 |
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