Hollow tubes constructed by carbon nanotubes self-assembly for CO_(2) capture

碳纳米管自组装构建空心管用于CO_(2)捕获

Carbon nanotubes(CNTs)have garnered significant attention in the fields of science,engineering,and medicine due to their numerous advantages.The initial step towards harnessing the potential of CNTs involves their macroscopic assembly.The present study employed a gentle and direct self-assembly technique,wherein controlled growth of CNT sheaths occurred on the metal wire’s surface,followed by etching of the remaining metal to obtain the hollow tubes composed of CNTs.By controlling the growth time and temperature,it is possible to alter the thickness of the CNTs sheath.After immersing in a solution containing 1 g/L of CNTs at 60℃ for 24 h,the resulting CNTs layer achieved a thickness of up to 60μm.These hollow CNTs tubes with varying inner diameters were prepared through surface reinforcement using polymers and sacrificing metal wires,thereby exhibiting exceptional attributes such as robustness,flexibility,air tightness,and high adsorption capacity that effectively capture CO_(2) from the gas mixture.

碳纳米管(CNTs)因其在科学、工程和医学领域中众多优点而备受关注。构建CNTs的宏观组装体是其实际应用的基础。本研究采用了一种简单温和的自组装技术,活化后的CNTs在金属丝表面发生氧化还原反应自组装生成CNT鞘层,刻蚀金属丝后得到由CNTs构成的中空管道。管壁厚度受金属丝尺寸、生长时间、温度、浓度等条件控制。在60℃的1 g/L CNTs溶液中反应24 h,得到的空心管厚度达60μm。表面用聚合物加固后的空心管展现出坚韧灵活、高气密性和高吸附能力等性能,能够有效地捕获CO_(2)。