Gao Lu-Sha, Zhang Shi-Nan, Zou Xiaoxin, Wang Jingfeng, Su Juan, Chen Jie-Sheng
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China.
Inorg Chem. 2021 Jan 4;60(1):32-36. doi: 10.1021/acs.inorgchem.0c03325. Epub 2020 Dec 18.
A Sr-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 Sr-doped titania sample with rich oxygen vacancies achieves a photocatalytic hydrogen production rate as high as 1092 μmol h g, which is 4 and 16 times higher than the unmodified titania with less oxygen vacancies and the bench-marked P25, respectively.
开发了一种锶掺杂策略，以在多孔二氧化钛中制造丰富的氧空位，从而提高可见光驱动的光催化活性。锶的原子半径比钛大，其掺入导致二氧化钛中一个晶格氧原子的释放，从而产生氧空位。具有丰富氧空位的最佳锶掺杂二氧化钛样品实现了高达1092 μmol h g的光催化产氢速率，分别比氧空位较少的未改性二氧化钛和基准P25高4倍和16倍。
