CO<sub>2</sub> Capture and Conversion: Advanced Materials and Processes

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Background

The excessive consumption of unsustainable fossil fuels has led to the global energy crisis and continuously increases the atmosphere’s CO2 concentration, which also triggers global warming and climate change. These great challenges facing humanity require an urgent demand for CO2 reduction. Emission reductions by carbon capture and utilization (CCU) are one promising strategy to help mitigate climate change since CO2 could work as a carbon feedstock for chemicals, fuels, or polymers to replace fossil carbon. However, CO2 is a rather oxidized and stable molecule, and its capturing and utilization highly depend on the CO2 source and need extra energy input. How to capture and convert CO2 into valuable chemicals in a green way is a problem for scientists to solve and has become a particularly hot research topic.

Rational design of efficient and robust adsorbent and catalyst materials and process intensification are essential for realizing industrial CCU. Although a vast number of publications have focused on synthesizing new adsorbents with high selectivity toward CO2 with respect to other gases and effective catalysts for different CO2 conversion routes, such as thermochemical conversion and hydrogenation of CO2, electrochemical and photochemical conversion of CO2. The effect of contaminants in different CO2 sources is seldom solved and the underlying chemical and physical interactions of CO2 with atoms on the adsorbent/catalyst surface are not fully understood on the molecular level. Additionally, there is much less insight information into CCU materials design, processing characterization, and computer modeling. Therefore, the goal of this Research Topic is to showcase how mainstream scientists investigating materials and processes for CO2 capture and conversion have been addressing these issues.

This research topic aims to publish original papers concerning CO2 capture and conversion. Topics of interest include, but are not limited to:
• Innovative solvents and solid adsorbents for CO2 capture;
• Advanced membrane materials and technology for CO2 separation;
• Synthesis and design dual function materials for integrated CO2 capture and utilization;
• Robust catalysts for thermochemical, electrochemical and photochemical CO2 conversion;
• Cutting-edge experimental or characterization techniques for studying CO2 capture and utilization
• Renewable-integrated flexible systems for carbon capture and utilization;
• Kinetics modeling and process simulation in CO2 capture and utilization;
• Reviews for CO2 capture and utilization.

Keywords: CO2 capture, CO2 conversion, advanced materials, cutting-edge technology, reaction mechanism

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