Porous carbons are one kind of extensive, sustainable and promising materials for CO₂ adsorption, however the preparation of porous carbon mostly occurs by using corrosive and hazardous activating substances such as KOH, H₃PO₄ and ZnCl₂, which not only restricts equipment and safety procedures but also causes serious environmental threat. To overcome those issues, for the first time, potassium bitartrate-derived porous carbons have been prepared via a facile single-step, free of solvent and self-activating approach for CO₂ adsorption application. As-prepared carbon shows a high porosity along with hierarchical micro/mesoporous structure and sponge-like morphology. By tuning the activating temperature, these potassium bitartrate-derived carbons present the maximum CO₂ capacity of 3.55 mmol g⁻¹ at 25 °C and 5.16 mmol g⁻¹ at 0 °C under 1 bar thanks to both high narrow microprosity along with sponge-like morphology and rich oxygen functionality within the surface. Besides, the optimized sample is a highly selective material for the separation of CO₂ from N₂ gas and depicts almost constant CO₂ adsorption capacity after five consecutive adsorption–desorption cycles claiming promising stability and recyclability from an industrial standpoint. In short, the present single-step and self-activating strategy pave the promising avenue for efficient and enhanced CO₂ adsorption performance.

多孔炭是一种广泛、可持续、有发展前景的CO ₂吸附材料，但多孔炭的制备大多采用KOH、H ₃ PO ₄和ZnCl ₂等具有腐蚀性和危害性的活性物质，不仅限制了设备和安全程序，但也造成严重的环境威胁。为了克服这些问题，首次通过简单的一步、无溶剂和 CO _{2自活化方法制备了酒石酸氢钾衍生的多孔碳。}吸附应用。所制备的碳显示出高孔隙率以及分级微/中孔结构和海绵状形态。通过调节活化温度，这些源自酒石酸氢钾的碳在 25 °C 和1 bar 下的最大 CO ₂容量分别为 3.55 mmol g ^{-1和 5.16 mmol g -1}，这要归功于高窄微孔和海绵。表面内的类似形态和丰富的氧功能。此外，优化后的样品是用于从 N _{2气体中分离 CO 2}的高选择性材料，并描绘出几乎恒定的 CO ₂连续五次吸附-解吸循环后的吸附容量，从工业角度来看，具有良好的稳定性和可回收性。简而言之，目前的单步自激活策略为高效和增强 CO ₂吸附性能铺平了道路。