期刊
ADVANCED FUNCTIONAL MATERIALS
卷 32, 期 7, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202109503
关键词
metal oxides; oxygen vacancy; structure characterization; vacancy formation; vacancy functionality
类别
资金
- Australian Research Council through DECRA [DE210100930, DP200101900, FL190100139]
- Shanghai Government [19160712900, 20ZR1440700]
- Australian Research Council [DP200101900, DE210100930] Funding Source: Australian Research Council
Oxygen vacancy (V-O) is a common defect in metal oxides that provides unique physiochemical properties. Understanding its formation, structure, and function remains challenging, highlighting the importance of studying defect formation energy and structure in V-O research. This review critically revisits the electronic property and structure changes of MOs upon the generation of Vo, providing insights for future research directions in rational control of V-O in MOs for solar energy conversion.
Oxygen vacancy (V-O) is one of the most common defects in metal oxides (MOs), which endow the MOs with many unique physiochemical properties. Even though V-O engineering has been applied in photo(electro)catalysis, there are still significant challenges in the understanding of the formation, structure, and property of V-O. The V-O can be produced by treating MOs under low oxygen atmosphere or in vacuum ruled by the equilibrium of V-O formation, while other types of defects can also be generated simultaneously. Identifying and distinguishing the formation and function of Vo remain highly challenging, thus the scrutiny of defect formation energy and structure of V-O is significant in V-O research. This review critically revisits the electronic property and structure changes of MOs upon the generation of Vo. It not only provides clues to detect V-O, but also specifies the role of V-O in a particular material system considering its drastic influence on light harvesting, conductivity, energy level, surface adsorption, and others. The review also presents a perspective on the future research directions toward rational control of the key aspects of Vo in MOs, namely its formation, characterization, and function, for solar energy conversion.
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