Key factors and primary modification methods of activated carbon and their application in adsorption of carbon-based gases: A review
Key factors and primary modification methods of activated carbon and their application in adsorption of carbon-based gases: A review
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活性炭吸附碳基气体的关键因素、主要改性方法及其应用综述
DOI：
10.1016/j.chemosphere.2021.131995
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发表时间：
2022
期刊：
影响因子：
8.8
通讯作者：
Ye Daiqi
中科院分区：
文献类型：
--
作者：
Wang Xiaohong;Cheng Hairong;Ye Guangzheng;Fan Jie;Yao Fan;Wang Yuqin;Jiao Yujun;Zhu Wenfu;Huang Haomin;Ye Daiqi
要实现碳中和，就必须控制碳基气体向大气的排放。在迄今报道的各种碳基气体去除技术中，吸附被认为是最有前途的技术之一，因为其经济效率、可重复使用性和低能耗。活性炭因其比表面积大、官能团丰富、吸附能力强而被广泛应用于处理各种碳基气体。本文综述了活性炭作为碳基气体吸附剂的研究进展。关键因素（即，比表面积、孔结构和表面官能团）对活性炭吸附碳基气体的影响。用于改性活性炭的主要方法（即，表面氧化、表面还原、负载材料和等离子体改性方法）以提高其吸附能力，沿着这种材料在吸附不同类型的碳基气体（例如醛、酮、芳烃、卤代烃和碳基温室气体）中的目标应用。最后，对活性炭未来的发展方向和面临的挑战进行了探讨。本文的工作将有助于开发具有选择性吸附性能的活性炭，并降低吸附剂的生产成本。
To achieve carbon neutrality, it is necessary to control carbon-based gas emissions to the atmosphere. Among the various carbon-based gas removal technologies reported to date, adsorption is considered one of the most promising because of its economic efficiency, reusability, and low energy consumption. Activated carbon is widely used to treat different types of carbon-based gases owing to its large specific surface area, abundant functional groups, and strong adsorption capacity. This paper reviews the recent research progress into activated carbon as an adsorbent for carbon-based gases. The key factors (i.e., specific surface area, pore structure, and surface functional groups) affecting the adsorption of carbon-based gases by activated carbon were analyzed. The main methods employed to modify activated carbon (i.e., surface oxidation, surface reduction, loading materials, and plasma modification methods) to improve its adsorption capacity are also discussed herein, along with the targeted applications of such material in the adsorption of different types of carbon-based gases (such as aldehydes, ketones, aromatic hydrocarbons, halogenated hydrocarbons, and carbon-based greenhouse gases). Finally, the future development directions and challenges of activated carbon are discussed. Our work will be expected to benefit the development of activated carbon exhibiting selective adsorption properties, and reduce the production costs of adsorbents.