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https://www.ias.ac.in/article/fulltext/boms/046/0006 -
Keywords
Strontium titanate ;metal ion doping ;non-metal element doping ;co-doping ;photocatalytic performance. -
Abstract
As a representative composite metal oxide belonging to a perovskite, strontium titanate (SrTiO$_3$) possesses the merits of chemical stability, low toxicity and low cost, endowing it with significant application potentials in environmental remediation, clean energy generation and valuable chemical production from greenhouse gas conversion. However, the pure-phase SrTiO$_3$ suffers from many fatal weaknesses, especially the wide energy bandgap and low photoexcited electron– hole pair separation efficiency, thus limiting its photocatalytic performance and large-scale applications. To address this issue, researchers have made great efforts to modify the electronic and physicochemical structure of SrTiO$_3$. In particular, doping treatments have attracted considerable attention, but some problems still block effective doping, while impropriate doping might worsen the photocatalytic performance of SrTiO$_3$ by introducing the photogenerated hole–electron pair recombination centres. Consequently, many challenges remain for this research topic that is undergoing an intense study. This short review presents the hot spots of appropriate doping treatments of SrTiO$_3$ for photocatalytic performance enhancement over recent years. Different kinds of doping species are systematically discussed. The current problems that remain are summarized and analysed, and the perspectives for the rational doping of SrTiO$_3$ are presented.
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Graphical Abstract
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Author Affiliations
YISHENG XU1 YAOHENG LIANG1 QINGQING HE1 RUOLING XU1 DONGCHU CHEN1 2 XUEJUN XU1 2 HUAWEN HU1 2
- School of Materials Science and Hydrogen Energy, Foshan University, Foshan 528000, Guangdong, China
- Guangdong Key Laboratory for Hydrogen Energy Technologies, Foshan University, Foshan 528000, Guangdong, China
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Dates
- Published
- 28 December 2022
- Manuscript received
- 8 April 2022
- Accepted
- 4 August 2022
- Final version published online
- 28 December 2022
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Bulletin of Materials Science
Volume 46, 2023
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