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The increasing CO_2 concentration has prompted global efforts to develop efficient CO_2 capture technologies. Biomass carbon is a prospective adsorbent due to its renewability, low cost, and tunable ...physicochemical properties. However, conventional KOH activation usually requires excessive usage of chemicals, leading to high costs and environmental concerns. In this study, we explore the potential of Fenton-like oxidation to enhance the CO_2 uptake of biomass carbon. The incorporation of transition metal catalysts (Fe, Cu, Mn, Co) into the Fenton-like reaction significantly modifies the carbon structure and introduces oxygen-containing functional groups. The involvement of Mn increased the CO_2 uptake by 47.7% over the original carbon. The results indicate that oxidative pretreatment improves the pore structure and enhances the surface chemistry. The optimal porous carbon reaches a CO_2/N_2 selectivity of 13.75, which is superior to the commercial activated carbon. These insights provide a novel approach for optimizing biomass carbon for sustainable CO_2 capture.続きを見る
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Mendeley出力
2025_p0001