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High-temperature thermal shock and material modification: Professor Wang Yong, Professor Hu Liangbing and Abhaya K. Datye's team prepared a single-atom Pt1/CeO2 catalyst with an asymmetric Pt1O4 coordination structure by rapid heating and cooling at high temperature in an inert atmosphere through the thermal shock method (TS). Flash Joule Heating Machine (FJH) technology can also quickly heat the material to a high temperature, triggering the reorganization of the internal structure of the material and the formation of defects, and realizing precise control of the material's microstructure. Both use the violent reaction conditions brought about by high-temperature thermal shock to promote efficient modification of the target material.
Rapid heating and performance optimization: TS technology achieves efficient preparation of Pt1/CeO2 catalysts through rapid heating, optimizes its structure and performance, and significantly improves the activity of low-temperature CO oxidation. FJH technology is also commonly used for rapid heating and performance optimization in the preparation of other materials. For example, in the preparation of carbon-based materials such as graphene, the defect density and electronic structure of the material can be regulated by rapid heating, thereby optimizing its conductivity and chemical activity.
High efficiency and low cost: TS technology can complete the preparation of Pt1/CeO2 catalyst in a very short time, which is highly efficient. FJH technology also has the characteristics of rapid heating and cooling, which greatly shortens the time of material preparation, improves production efficiency and reduces production costs. The combination of the two can further improve the efficiency and performance of material preparation, reduce production costs, and provide technical support for large-scale production of high-performance materials.
Environmental friendliness: TS technology avoids the long-term energy consumption and environmental pollution problems in traditional high-temperature treatment. FJH technology does not require the use of solvents or reaction gases during material synthesis, and has low energy consumption, which meets the current requirements of environmental protection and sustainable development.
Further optimization of material properties: FJH technology can be applied to the subsequent treatment of Pt1/CeO2 catalysts treated by TS technology. Through further rapid heat treatment, the crystal structure and defect distribution of the catalyst can be optimized to improve its catalytic activity and stability. For example, more uniform defect distribution and stronger metal-support interaction can be achieved through FJH technology, enhancing the catalyst's anti-sintering ability and long-term stability.
Development of new materials: Combine the rapid synthesis capability of FJH technology and the structural regulation advantage of TS technology to explore and develop new catalysts. For example, try to use FJH technology to quickly heat treat and optimize the structure of other types of metal or non-metal catalysts, and then use TS technology to synthesize them to achieve higher performance and better application effects.
Optimization and standardization of process parameters: In-depth study of the synergistic mechanism of FJH technology and TS technology in the material preparation process, optimize process parameters, such as heating temperature, heating time, current density, etc. Establish a standardized process flow to ensure the stability and consistency of material performance, and provide reliable technical guarantees for the commercial production and application of catalysts.
Technology promotion and large-scale production: TS technology significantly reduces the preparation cost and energy consumption of Pt1/CeO2 catalysts, and provides a practical path for the large-scale production of high-performance catalysts. In the future, it is expected to achieve industrial application in the fields of automobile exhaust treatment, industrial emission control, etc.
Expanding the material system: TS process provides a reference for the preparation of a variety of high-performance catalysts, such as high-entropy nitrides, borides and multi-component composite materials. These new materials can further meet the needs of different industrial fields.
In-depth research and process optimization: Subsequent research can focus on the in-depth analysis of the reaction mechanism and microstructure evolution in the TS process, while optimizing equipment and process parameters to improve the consistency and stability of material properties, laying the foundation for further promoting the application of high-performance catalysts.
Electrospinning Nanofibers Article Source:
https://doi.org/10.1002/anie.20210858
