Recent advances in activated carbons for CO 2 capture: Structure–performance relationships and future perspectives
CO2回収用活性炭の最近の進歩：構造-性能関係と将来の展望 (AI 翻訳)
Siavash Pasvei, Seyed Ali Hosseini Moradi, Farzad Namvar
🤖 gxceed AI 要約
日本語
本レビューは、2022～2025年の活性炭ベースのCO2吸着材の進展を30の研究から統合。超ミクロ孔（<0.7 nm）がCO2吸着を支配し、含窒素・含硫黄官能基が選択性を向上させる。物理吸着主体の活性炭は90～99%の容量維持を示し、工業展開の可能性を支持。持続可能な前駆体やハイブリッド複合材料など今後の研究課題も提示。
English
This review integrates findings from 30 representative studies on activated carbon (AC) sorbents for CO2 capture (2022–2025). Ultramicropores (<0.7 nm) dominate adsorption, with capacities up to 9 mmol g⁻¹. Nitrogen and sulfur functional groups enhance CO2/N2 selectivity up to 161. ACs retain 90–99% capacity over cycles, supporting industrial scale-up. Future directions include green precursors, pore engineering, and hybrid composites.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
CO2回収技術は日本のGX戦略の一環（CCS/CCUSの推進）であるが、本論文は材料科学的レビューであり、具体的な政策や規制との連動は薄い。しかし、実用化に向けた基礎知見として日本のCCUS研究に示唆を与える。
In the global GX context
This review advances global CCUS discourse by systematically mapping structure–performance relationships in activated carbons, a key material for post-combustion and direct air capture. While not directly addressing policy frameworks (e.g., 45Q tax credits, EU Innovation Fund), it provides the technical foundation needed to scale carbon capture technologies critical for net-zero targets.
👥 読者別の含意
🔬研究者:Provides a systematic overview of recent AC-based sorbents, highlighting pore engineering and doping strategies for improved CO2 capture performance.
🏢実務担当者:Offers insight into material selection and performance trade-offs for developing scalable CO2 capture systems.
📄 Abstract（原文）
The continuous rise in atmospheric CO 2 concentration is a major driver of climate change, underscoring the urgent need for efficient capture technologies. Activated carbons (ACs) are among the most promising adsorbents because they are inexpensive, structurally tunable, and exhibit excellent moisture resistance. This review critically examines recent advancements (2022–2025) in AC-based sorbents for CO 2 capture by integrating findings from 30 representative studies covering biomass- and waste-derived precursors, heteroatom-doped carbons, and composite materials. Under near-ambient conditions, ultramicropores (<0.7 nm) dominate CO 2 adsorption, with uptake capacities ranging from 6 to 9 mmol g −1 despite wide variations in brunauer-emmett-teller surface area. Surface chemistry further enhances performance: pyridinic and pyrrolic nitrogen species, as well as oxidized sulfur functional groups, strengthen interactions with CO 2 and significantly improve both uptake and CO 2 /N 2 selectivity, reaching values up to 161 in olive-stone-derived carbons. Thermodynamic analyses indicate an optimal isosteric heat of adsorption (Qst) window of 20–35 kJ mol −1 , ensuring a balanced trade-off between adsorption affinity and regenerability. Stability assessments consistently demonstrate that physisorption-dominated ACs retain more than 90–99% of their initial capacity across multiple cycles, supporting their potential for industrial deployment. Nevertheless, challenges remain related to large-scale production, sustainable precursor selection, performance in humid or impurity-rich conditions, and energy-efficient regeneration processes. Future research directions include the utilization of green and waste-derived precursors, precise pore engineering, targeted heteroatom doping, and the development of hybrid AC/metal–organic framework or AC/oxide composite sorbents. Overall, ACs—particularly those derived from renewable or waste resources—offer a robust and versatile platform for CO 2 capture. Through combined structural, chemical, and thermodynamic optimization, these materials can transition from promising laboratory prototypes to scalable solutions for post-combustion and direct air capture applications.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1177/02636174251414478first seen 2026-05-05 23:56:26
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