A comparative study of two cellulosic materials i.e., cotton fabrics and bacterial cellulose nanofibers (NBC), is reported as substrates for metal organic frameworks (MOF-199), to prepare micro and nanocomposites of cellulose@MOF-199 for CO₂ capture. The CO₂ uptake performance was investigated using gravimetric adsorption and desorption kinetics. NBC was an efficient substrate with full coverage and uniform distribution of MOF crystals observed in NBC@MOF-199 nanocomposite. The surface area for NBC@MOF-199 and Cotton@MOF-199 were 553.4 m² g⁻¹ and 168.9 m² g⁻¹, respectively. NBC@MOF-199 showed a high adsorption capacity (2.9 mmol g⁻¹) at ambient temperature and pressure, followed by Cotton@MOF-199 (1.2 mmol g⁻¹). The kinetic studies revealed that the adsorption process is controlled by film diffusion at lower temperatures, and by sorption to active sites at higher temperatures. The estimated thermodynamic parameters represent a spontaneous adsorption with low activation energies of adsorption/desorption, promising a fast adsorption and facilitated regeneration adsorbent system with minimum energy costs.

两种纤维素材料即棉织物和细菌纤维素纳米纤维 (NBC) 的比较研究被报道为金属有机框架 (MOF-199) 的基材，以制备用于 CO ₂捕获的纤维素@MOF-199 的微米和纳米复合材料。使用重量吸附和解吸动力学研究CO ₂吸收性能。NBC 是一种高效的基材，在 NBC@MOF-199 纳米复合材料中观察到 MOF 晶体的完全覆盖和均匀分布。NBC@MOF-199 和 Cotton@MOF-199 的表面积分别为 553.4 m ² g ^-1和 168.9 m ² g ^-1。NBC@MOF-199 表现出高吸附容量（2.9 mmol g ^-1) 在环境温度和压力下，然后是 Cotton@MOF-199 (1.2 mmol g ^-1 )。动力学研究表明，吸附过程受较低温度下的膜扩散和较高温度下吸附到活性位点的控制。估计的热力学参数代表具有低吸附/解吸活化能的自发吸附，有望以最小的能量成本快速吸附和促进再生吸附剂系统。