碳基材料与挥发性有机污染物相互作用行为和机制研究进展

RESEARCH PROGRESS ON INTERACTION BEHAVIORS AND MECHANISM OFCARBON-BASED MATERIALS AND VOLATILE ORGANIC COMPOUNDS

挥发性有机物(VOCs)是常见的污染物,可通过工农业生产活动进入环境,并对生态环境和人类健康构成潜在威胁。碳基材料具有多种优点且极具工程应用潜力,被广泛应用于VOCs污染防治的研究中。因此明确碳基材料与VOCs间的作用机制有着切实的环境意义。首先综述了VOCs的主要来源、危害。并以碳基材料为主要关注对象,论述了各种改性或未改性碳基材料对VOCs的吸附和降解效率;详细介绍了吸附和降解过程中两者间可能发生的作用机制;然后从碳基材料和VOCs本身的物理化学性质以及环境因素角度出发,探讨碳基材料吸附或降解VOCs过程中的影响因素;最后阐明了两者之间的关联和区别,总结出判定去除VOCs过程中相互作用的方法。基于此,碳基材料在VOCs治理过程中起到重要作用,具有重要的环境意义。研究成果可为碳基材料的结构调控方向、应用性能评价及其在VOCs吸附或降解中的应用提供参考。

Volatile organic compounds(VOCs)are a class of common pollutants.They can enter the environment through industrial and agricultural activities and cause pollution,thus posing a potential threat to the ecological environment and human health.Carbon-based materials are widely used in the research of VOCs pollution prevention and control,due to their advantages and great engineering application potential.Therefore,it is of practical environmental significance to clarify the interaction mechanism between carbon-based materials and VOCs.In this review,the primary sources,hazards and common treatment methods of VOCs were first summarized.Taking carbon-based materials as the primary research object,the adsorption and degradation efficiency of various modified or unmodified carbon-based materials on VOCs were discussed.The possible interaction mechanism between them in the process of adsorption and degradation was described in detail.Then,from the perspective of the physicochemical properties of carbon-based materials and VOCs themselves as well as environmental factors,the factors influencing the adsorption or degradation of VOCs by carbon-based materials were discussed.Finally,the correlation and differences between the two were clarified,and the interaction methods in the process of determining the removal of VOCs were summarized.Based on the in-depth understanding of the efficiency,mechanism and influencing factors in the adsorption and degradation of VOCs by carbon-based materials,this review could provide a deeper understanding of the critical role of carbon-based materials in the VOCs treatment process,which could provide theoretical guidance for the future regulation direction of the structure of carbon-based materials,application performance evaluation and their application in adsorption or degradation of VOCs.