A review on the adsorption of volatile organic compounds by biomass-based porous carbon (BPC) and its mechanism

IF 5.5 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY Carbon Letters Pub Date : 2024-07-02 DOI:10.1007/s42823-024-00766-6

Haifan Yang, Guannan Liang, Xinyang Sun, Simiao Wu

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Abstract

Volatile organic compounds (VOCs) are commonly produced in the combustion of fossil fuels and in chemical industries such as detergents and paints. VOCs in atmosphere cause different degrees of harm to human bodies and environments. Adsorption has become one of the most concerned methods to remove VOCs in atmosphere due to its high efficiency, simple operation and low energy consumption. Biomass-based porous carbon (BPC) has been considered as the most promising adsorption material because of the low cost and high absorption rate. In this paper, the key characteristic (e.g., specific surface area, pore structure, surface functional groups and basic composition) of BPC affecting the adsorption of VOCs in atmosphere were analyzed. The improvement of adsorption capacity of BPC by common modification methods, such as surface oxidation, surface reduction, surface loading and other modification methods, were discussed. Examples of BPC adsorption on different types of VOCs including aldehydes, ketones, aromatic VOCs, and halogenated hydrocarbons, were also reviewed. The specific adsorption mechanism was discussed. Finally, some unsolved problems and future research directions about BPC for adsorbing VOCs were propounded. This review can serve as a valuable reference for future developing effective biomass-based porous carbon VOCs adsorption technology.

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生物质多孔碳（BPC）对挥发性有机化合物的吸附及其机理综述

挥发性有机化合物（VOC）通常产生于化石燃料的燃烧以及洗涤剂和油漆等化学工业。大气中的挥发性有机化合物会对人体和环境造成不同程度的危害。吸附法因其效率高、操作简单、能耗低等优点，已成为去除大气中挥发性有机化合物最常用的方法之一。生物质多孔碳（BPC）因其低成本和高吸附率被认为是最有前途的吸附材料。本文分析了影响生物质多孔炭吸附大气中 VOCs 的关键特性（如比表面积、孔结构、表面官能团和基本成分）。讨论了通过常见的改性方法，如表面氧化、表面还原、表面负载和其他改性方法来提高 BPC 的吸附能力。此外，还综述了 BPC 对不同类型挥发性有机化合物（包括醛类、酮类、芳香族挥发性有机化合物和卤代烃）的吸附实例。还讨论了具体的吸附机理。最后，就 BPC 吸附 VOCs 提出了一些尚未解决的问题和未来的研究方向。本综述可为今后开发有效的生物质多孔碳 VOCs 吸附技术提供有价值的参考。

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来源期刊

Carbon Letters CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

7.30

自引率

20.00%

发文量

118

期刊介绍： Carbon Letters aims to be a comprehensive journal with complete coverage of carbon materials and carbon-rich molecules. These materials range from, but are not limited to, diamond and graphite through chars, semicokes, mesophase substances, carbon fibers, carbon nanotubes, graphenes, carbon blacks, activated carbons, pyrolytic carbons, glass-like carbons, etc. Papers on the secondary production of new carbon and composite materials from the above mentioned various carbons are within the scope of the journal. Papers on organic substances, including coals, will be considered only if the research has close relation to the resulting carbon materials. Carbon Letters also seeks to keep abreast of new developments in their specialist fields and to unite in finding alternative energy solutions to current issues such as the greenhouse effect and the depletion of the ozone layer. The renewable energy basics, energy storage and conversion, solar energy, wind energy, water energy, nuclear energy, biomass energy, hydrogen production technology, and other clean energy technologies are also within the scope of the journal. Carbon Letters invites original reports of fundamental research in all branches of the theory and practice of carbon science and technology.