Bifunctional Activated Carbon Ultrathin Fibers:Combining the Removal of VOCs and PM in One Material  

作　　者：Haiyang Wang Di Zu Xinyu Jiang Yong Xu Zhiwen Cui Peng Du Zekun Cheng Ziwei Li Lei Li Chong Yang Xiaopeng Bai Baopu Zhang Yiqian Zhou Kuangyu Wang Bohan Li Zhenghong Huang Lihao Zhao Bo Li Hui Wu 

机构地区：[1]State Key Lab of New Ceramics and Fine Processing,School of Materials Science and Engineering,Tsinghua University,Beijing 100084,People’s Republic of China [2]Institute of Materials Research,Tsinghua Shenzhen International Graduate School,Shenzhen 518055,People’s Republic of China [3]Applied Mechanics Laboratory,Department of Engineering Mechanics,Tsinghua University,Beijing 100084,People’s Republic of China [4]Beijing Tongfang Envir-Clean Technology Co.,LTD,Beijing 100083,People’s Republic of China

出　　处：《Advanced Fiber Materials》2023年第6期1934-1948,共15页先进纤维材料（英文）

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.

摘　　要：Volatile organic compounds(VOCs)and particulate matter(PM)are both frequently present in air as contaminants,posing serious health and environmental hazards.The current filtration of VOCs utilizes entirely different materials compared with PM filtration,adding complexity to air cleaning system.Herein,we design a pitch-based activated carbon ultrathin fibers(PACUFs)for bifunctional air purification.The 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 drop.In 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.

关 键 词：Air pollutants Activated carbon fiber Melt-blown spinning Bifunctional purification 

分 类 号：TQ424.1[化学工程]