2023-10-04 カリフォルニア大学リバーサイド校(UCR)
◆これらの材料は高い選択性を持ち、炭素捕捉技術に適しており、大規模な応用にも適している。しかし、大規模な生産に関連する課題を克服する必要があります。MXeneの大規模合成には新しい方法の開発が必要です。これらの材料は既存の技術と組み合わせて使用でき、気候変動への対策に貢献する可能性があります。
＜関連情報＞
- https://news.ucr.edu/articles/2023/10/04/two-dimensional-compounds-can-capture-carbon-air
- https://www.cell.com/chem/fulltext/S2451-9294(23)00429-1
二次元MXeneとMBeneを利用して汚染物質CO2を抑制する Curbing pollutant CO2 by using two-dimensional MXenes and MBenes
Mihrimah Ozkan,Kathrine A.M. Quiros,Jordyn M. Watkins,Talyah M. Nelson,Navindra D. Singh,Mahbub Chowdhury,Thrayesh Namboodiri,Kamal R. Talluri,Emma Yuan
Chem Published:October 04, 2023
DOI:https://doi.org/10.1016/j.chempr.2023.09.001
The bigger picture
In 2022, atmospheric carbon dioxide (CO2) reached a record concentration of 417.2 parts per million (ppm). At this rate, the planet could exceed 1.5°C of warming above pre-industrial levels in the next decade. Thus, negative-emission technologies are increasingly necessary, particularly given the notorious impacts of climate change. Various adaptation and avoidance strategies, such as physical migration away from polluted areas and interplanetary habitation schemes, have been proposed but are costly. Other viable methods include implementing direct air capture (DAC) plants or carbon-capture technologies at the source. The cost and capture capacity of such technologies are largely determined by their constituent materials. State-of-the-art 2D materials offer great promise in many applications and are certainly potential candidates for CO2-capture applications, but developing “the cradle of carbon-capture materials” requires further investigation and innovation.
Summary
Nearly 85% of current human-caused CO2 emissions result from the burning of fossil fuels, including coal, oil, and natural gas. Carbon pollution warms the planet and increases hazardous extremes, such as heatwaves, droughts, wildfires, heavy rainfall, and flooding. Therefore, the decarbonization of industry and power plants is of great necessity. To this end, carbon-capture technologies and their effectiveness are critical to the success of curbing environmental CO2. Here, we review two recently developed materials, MXenes and MBenes, and discuss their potential in carbon capture. We present and compare material properties, including physical, thermodynamic, electrical, chemical, mechanical, electrocatalytic, and photocatalytic information, along with cost-effective and environmentally friendly synthesis of these materials for large-scale applications in CO2 capture. This comprehensive summary of progress in this field can facilitate critical research and promote collective efforts toward achieving the necessary large-scale implementation of MXenes and MBenes in capturing, sensing, reducing, and/or storing CO2.
