Bifunctional Activated Carbon Ultrathin Fibers:Combining the Removal of VOCs and PM in One Material
作者机构：State Key Lab of New Ceramics and Fine ProcessingSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084People’s Republic of China Institute of Materials ResearchTsinghua Shenzhen International Graduate SchoolShenzhen 518055People’s Republic of China Applied Mechanics LaboratoryDepartment of Engineering MechanicsTsinghua UniversityBeijing 100084People’s Republic of China Beijing Tongfang Envir-Clean Technology Co.LTDBeijing 100083People’s Republic of China
出 版 物：《Advanced Fiber Materials》 (先进纤维材料（英文）)
年 卷 期：2023年第5卷第6期
页 面：1934-1948页
核心收录：
学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学]
基 金：the Basic Science Center Program of the National Natural Science Foundation of China(NSFC)under Grant No.51788104 Beijing Natural Science Foundation under Grant No.JQ19005
主 题：Air pollutants Activated carbon fiber Melt-blown spinning Bifunctional purification
摘 要：Volatile organic compounds(VOCs)and particulate matter(PM)are both frequently present in air as contaminants,posing serious health and environmental *** current filtration of VOCs utilizes entirely different materials compared with PM filtration,adding complexity to air cleaning ***,we design a pitch-based activated carbon ultrathin fibers(PACUFs)for bifunctional air *** PACUFs,with fiber diameter of∼1.2μm and specific surface area of 2341 m^(2) g^(−1),provide both high VOCs adsorption capacity(∼706 mg g^(−1))and excellent efficiency of∼97% PM_(0.3) filtration with low pressure *** contrast,traditional activated carbon fibers exhibit VOCs adsorption capacity of∼448 mg g^(−1) and PM_(0.3) removal efficiency of only∼36%at an equal area density of∼190 g m^(−2).Theoretical investigations reveal the filtration mechanism of the high-performance bifunctional fibrous PACUFs,considering full advantages of the high surface area,small pore size,and significant micropore volume.
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