Herein, a series of ACs are prepared with and without nitrogen doping at two different activation temperatures i.e., 800 °C and 900 °C. As-prepared ACs possess a high surface area (1142 - 2211 m² g⁻¹), large total pore volume (0.641 - 2.018 cm³ g⁻¹), and a well-developed porous structure. At 1 bar, ACs demonstrate a remarkable CO₂ uptake of 2.86 - 6.90 mmol g⁻¹ at 273 K and 2.22 - 4.71 mmol g⁻¹ at 298 K. This is attributed to the large ultra-micropore volume of pore size (< 0.73 nm), a prerequisite for achieving high CO₂ adsorption. Finally, ACs based electrodes used for supercapacitors display high specific capacitance (100 - 204 Fg⁻¹ at 0.5 Ag⁻¹), and outstanding stability (∼ 92 % capacity retained even after 1000 cycles). It is shown that glucose-derived carbon precursor activated by potassium hydroxide at 900 °C denoted as “CK-900” proves to be the best sample for CO₂ adsorption due to its narrow pore size, whereas glucose derived carbon precursor with melamine (acts as a nitrogen doping material) activated by potassium hydroxide at 900 °C denoted as “CNK-900” exhibits the best supercapacitive characteristics owing to its wider pore size distribution, high pore volume, and optimum nitrogen content. The remarkable CO₂ uptake and energy storage capacities are attributed to high surface area, optimum nitrogen doping, and micro-mesopores volume of ACs framework.

在此，在两个不同的激活温度（即800°C和900°C）下，制备了带有和不带有氮掺杂的一系列AC。所制备的AC具有高的表面积（1142至2211m ² g ^-1），大的总孔体积（0.641至2.018cm ³ g ^-1）以及发达的多孔结构。在1 bar下，ACs在273 K时显示出2.86-6.90 mmol g ^-1的惊人CO ₂吸收，在298 K时显示2.22-4.71 mmol g ^-1的显着吸收。这归因于孔径超大的超微孔体积（<0.73 nm），这是实现高CO ₂的前提吸附。最后，用于超级电容器AC的基于电极显示出高的比电容（100 - 204蛋白原^-1 0.5银^-1），和显着的稳定性（〜92％的容量保持甚至1000次循环后）。结果表明，氢氧化钾在900°C下活化的葡萄糖衍生碳前体称为“ CK-900”，由于其孔径狭窄而被证明是最佳的CO ₂吸附样品，而葡萄糖衍生的碳前体与三聚氰胺（作用作为一种氮掺杂材料）在900°C时被氢氧化钾活化，表示为“ CNK-900”，因为它具有较宽的孔径分布，较高的孔体积和最佳的氮含量，因此具有最佳的超电容特性。卓越的CO ₂ 吸收和能量存储能力归因于AC框架的高表面积，最佳氮掺杂和微中孔体积。