Solar driven integrated CO2 capture and CH4 dry reforming via FexMny/Ni/CaAl multi-function materials

Integrated CO2 capture and dry reforming of CH4 (ICCU-DRM) holds great promise in mitigating greenhouse gas emissions and producing value-added syngas simultaneously. However, the in-situ conversion is a highly endothermic process, which requires a large amount of energy to drive, making it very difficult for large-scale applications. The combination of solar energy in ICCU-DRM provide a potential solution to tackle the problem, but it needs to construct and evaluate multi-function materials (MFMs) with good features of CO2 adsorption, catalytic conversion and light absorption. Herein, we report a synthesis approach to prepare Fe5Mn5/Ni/CaAl for use in the solar driven ICCU-DRM, which directly utilize the solar energy for syngas production with excellent comprehensive performance. The material prepared demonstrates an average spectral absorbance of 85.81 %, and a CO2 capacity of 8.46 mmol·g−1 with up to 89 % conversion to syngas. We expect the synthesis strategy has good implications on the development of innovative materials for carbon reduction and energy storage applications.