Journal
INORGANIC CHEMISTRY
Volume 60, Issue 1, Pages 32-36Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.0c03325
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Funding
- SJTU Young Teacher Start-up Fund
- Centre of Hydrogen Science, Shanghai Jiao Tong University, China
- National Natural Science Foundation of China [21931005, 21720102002, 21673140]
- Shanghai Science and Technology Committee [19JC1412600]
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By doping Sr2+ into porous titania, rich oxygen vacancies are created, leading to enhanced visible-light-driven photocatalytic activity. The Sr2+-doped titania sample with abundant oxygen vacancies shows a significantly increased photocatalytic hydrogen production rate compared to unmodified titania and benchmarked P25.
A Sr2+-doping strategy is developed to engineer rich oxygen vacancies in porous titania for boosting visible-light-driven photocatalytic activity. The incorporation of strontium, with a larger atom radius than titanium, leads to the release of a lattice oxygen atom in the titania, causing the generation of an oxygen vacancy. The optimal Sr2+-doped titania sample with rich oxygen vacancies achieves a photocatalytic hydrogen production rate as high as 1092 mu mol h(-1) g(-1), which is 4 and 16 times higher than the unmodified titania with less oxygen vacancies and the bench-marked P25, respectively.
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