Volatile organic compounds (VOCs) are important contributors to air pollution such as ozone pollution and PM2.5, which cause serious harm to the environment and human health. Catalytic oxidation technology is one of the most potential VOCs removal technologies at present. The low temperature performance of catalyst affects the VOCs removal efficiency. With the continuous understanding of catalytic reaction mechanism, oxygen vacancy can activate molecular oxygen, enhance electron transfer, and adjust the surface chemical properties of catalysts. Oxygen vacancy engineering has become one of the most effective means to improve catalytic performance. However, there is a lack of detailed review on oxygen vacancy engineering in the field of VOCs catalytic oxidation.
Recently, Professor liuqingling's team systematically introduced the latest progress of oxygen vacancy engineering in the design of new catalytic materials for VOCs treatment. The core of the review focuses on the in-depth discussion of the construction strategy, structural characterization and catalysis of oxygen vacancy catalysts, and prospects the technical challenges and development prospects of the construction, characterization and action mechanism of oxygen vacancy catalysts. The research prospects provided by this review hope to help guide the controllable synthesis of VOCs degradation catalysts and the understanding of their mechanism.
The relevant research achievement "oxygen vapours in a catalyst for VOCs oxidation: synthesis, characterization, and catalytic effects" has been published in the internationally renowned Journal of Materials Chemistry A (if: 14.511), and was selected as the cover paper（ https://doi.org/10.1039/D2TA03180A ）。 The first author of the article is zhengyanfei, a doctoral student of the school of environment, and the corresponding authors are professor liuqingling and Associate Professor Han Rui.
Liuqingling, professor and doctoral supervisor of Tianjin University, deputy dean of School of environmental science and engineering, deputy director of Tianjin Key Laboratory of indoor air environment control, Tianjin University "Beiyang scholar", Tianjin "131 talent plan", is the "young chief scientist of national key research and development plan" of the Ministry of science and technology, mainly engaged in environmental engineering, environmental functional materials, air pollution control and prevention and other fields. Presided over the research work of the Ministry of science and technology 973, the National Natural Science Foundation, the national key research and development plan, and the Tianjin Natural Science Foundation. In the internationally renowned magazine appl Catal., B, Environ. Sci. Technol., ACS Catal., J. Mater. Chem. A，Chem. Commun., ChemSusChem, Chem. Mater., Langmuir, Energy Environ. Sci., He has published more than 100 papers and is committed to the research and development of new catalyst materials in the field of air pollution control in China.
Han Rui, Associate Professor / Master director, School of environmental science and engineering, Tianjin University. Facing the national "double carbon" strategy, it is committed to the basic research and technology research and development of CO2 capture and conversion, thermochemical energy storage, and air pollution control. On appl Catal., B, Environ. Sci. Technol.，J. Mater. Chem. A，Applied Energ.，Chem. Eng. J. and other international journals in the field of environment and energy have published more than 20 papers. Presided over many scientific research projects such as the youth project of the National Natural Science Foundation of China, the sub project of the key project of the National Natural Science Foundation of China, and the sub project of the national key R & D plan.
（Editor：Zheng Yanfei, Wang Yunchong）