用于 CO2 吸附和分离的氮掺杂多孔碳材料研究进展：最新进展与展望,Energy & Fuels

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用于 CO2 吸附和分离的氮掺杂多孔碳材料研究进展：最新进展与展望
Energy & Fuels ( IF 5.2 ) Pub Date : 2023-06-04 , DOI: 10.1021/acs.energyfuels.3c00941
Tongxin Li ₁ , Xuefei An ₁ , Dong Fu ₁

Affiliation

最严重的环境问题之一是CO ₂和其他温室气体带来的全球变暖。因此，碳捕集、利用和封存技术（CCUS）的发展迫在眉睫。其中，多孔炭吸附材料具有比表面积大、物理化学性质稳定、孔隙结构可调等优点，被认为是良好的CO 2_吸附剂。多孔碳材料的吸附性能可以通过调节碳化和活化方法的搭配以及制备过程中使用的工艺参数进行定向控制。此外，氮掺杂可以增强吸附剂和吸附质之间的作用，导致更高的CO₂吸附能力。经过深入研究，虽然目前对于氮掺杂增强吸附剂吸附性能的机理还没有明确的解释，但可以确认主要原因不是传统的酸碱理论，而是大量的微孔的数量、比表面积和感应力更可能是根本原因。本综述着重介绍了多孔碳材料的制备方法、孔结构调整策略以及氮掺杂位点与吸附剂之间的功能化类型和机理。最后，还讨论了这一新兴领域的未来发展方向和存在的挑战。

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Review on Nitrogen-Doped Porous Carbon Materials for CO2 Adsorption and Separation: Recent Advances and Outlook

One of the most serious environmental problems is the global warming brought by CO₂ and other greenhouse gases. Thus, the development of Carbon Capture, Utilization, and Storage Technology (CCUS) is urgent. Thereinto, the merits of porous carbon adsorption materials are their substantial specific surface area, stable physical and chemical properties, adjustable pore structure, etc., and they are considered to be good adsorbents for CO₂. The adsorption properties of porous carbon material are capable of being directionally controlled by regulating the collocation of carbonization and activation methods and setting the technological parameters used in the preparation process. In addition, nitrogen doping can enhance the effect between adsorbent and adsorbate, leading to higher CO₂ adsorption capacity. After in-depth studies, although there is still no clear explanation on the mechanism of nitrogen-doped enhancement of the adsorption properties of the adsorbent, it can be confirmed that the main reason is not the traditional acid–base theory, but a large number of micropores, specific surface area, and induction forces are more likely to be the root cause. The porous carbon materials preparation methods, pore structure adjustment strategies, and the types of functionalization and mechanism between nitrogen-doped sites and adsorbents are highlighted in this Review. Finally, the future development direction and existing challenges of this emerging field are also discussed.

更新日期：2023-06-04

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