Abstract Due to the increasing CO2 concentration in the atmosphere, it is of great importance to develop efficient CO2 adsorptions. A nitrogen-doped mesoporous carbon material has been developed by using resol as carbon source, F127 as soft template, cyanoguanidine as the nitrogen source and ethyl alcohol and water as mixed solvents.The structure and form of the material are analyzed by using the methods such as N2 adsorption/desorption, X-ray diffraction, Fourier transform infrared spectroscopy and transmission electron microscope, and the CO2 adsorption performance and mechanism of nitrogen-doped mesoporous carbon are intensively investigated. According to the results, the material has large surface area, highly ordered mesostructure and high nitrogen content, it exhibits excellent selectance of N2 and exhibits outstanding CO2 adsorption. Under 25 ℃ temperature, the CO2 adsorption efficiency of this material is 2.87 mmol/g. In its application in the Yangtze River Tunnel of Shanghai, this material is evenly applied to the tunnel surface. When the tunnel is open to traffic, the total CO2 adsorption is 55.88 kg per day. The result of this study comes as a feasible solution for carbon reduction of the infrastructure including urban tunnels.
Abstract：
Due to the increasing CO2 concentration in the atmosphere, it is of great importance to develop efficient CO2 adsorptions. A nitrogen-doped mesoporous carbon material has been developed by using resol as carbon source, F127 as soft template, cyanoguanidine as the nitrogen source and ethyl alcohol and water as mixed solvents.The structure and form of the material are analyzed by using the methods such as N2 adsorption/desorption, X-ray diffraction, Fourier transform infrared spectroscopy and transmission electron microscope, and the CO2 adsorption performance and mechanism of nitrogen-doped mesoporous carbon are intensively investigated. According to the results, the material has large surface area, highly ordered mesostructure and high nitrogen content, it exhibits excellent selectance of N2 and exhibits outstanding CO2 adsorption. Under 25 ℃ temperature, the CO2 adsorption efficiency of this material is 2.87 mmol/g. In its application in the Yangtze River Tunnel of Shanghai, this material is evenly applied to the tunnel surface. When the tunnel is open to traffic, the total CO2 adsorption is 55.88 kg per day. The result of this study comes as a feasible solution for carbon reduction of the infrastructure including urban tunnels.
ZHU Yujie LI Peinan LIU Yuqing ZHANG Ziyao
.Study on CO2 Adsorption Performance of Nitrogen-doped Mesoporous Carbon and Its Engineering Application[J] MODERN TUNNELLING TECHNOLOGY, 2023,V60(6): 91-99
2023, Vol. 60 