A Foldable All-Ceramic Air Filter Paper with High Efficiency and High-Temperature Resistance

被引：84
作者：
Jia, Chao [1 ]
Liu, Yibo [1 ,2 ]
Li, Lei [1 ]
Song, Jianan [1 ,2 ]
Wang, Haiyang [1 ,2 ]
Liu, Zhenglian [3 ]
Li, Ziwei [1 ]
Li, Bo [4 ]
Fang, Minghao [3 ]
Wu, Hui [1 ]
机构：
[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Grad Sch Shenzhen, Adv Mat Inst, Beijing 100084, Peoples R China
[3] China Univ Geosci Beijing, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Beijing 100083, Peoples R China
[4] Tsinghua Univ, Grad Sch Shenzhen, Adv Mat Inst, Shenzhen 518055, Peoples R China
来源：
NANO LETTERS | 2020年 / 20卷 / 07期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
air filter; ceramic fibers; solution blow spinning; high-temperature filtration; NANOFIBROUS MEMBRANES; ROBUST FLEXIBILITY; FIBROUS MEMBRANES; FILTRATION; STABILITY; FLOW;
D O I：
10.1021/acs.nanolett.0c01107
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Advanced filter materials with high efficiency, low-pressure drop, and high-temperature resistance are urgently needed in the field of high-temperature gas filtration. Here, an Al2O3-stabilized ZrO2 (ASZ) submicron fiber air filter paper with excellent flexibility and thermal stability (up to 1100 degrees C) is developed using a cost-effective, scalable solution blow spinning method and subsequent calcination. The ASZ papers demonstrate excellent flexibility and foldability, which can be attributed to the tetragonal phase and small crystallite size of the ASZ fibers due to the presence of Al2O3. In addition, the ASZ papers with an areal density of 56 mg cm(-2) show a high filtration efficiency (99.56%) and a low-pressure drop (108 Pa) for 15-615 nm NaCl particles at an airflow velocity of 5.4 cm s(-1). We envision that the foldable all-ceramic air filter material will provide a solution for the removal of particulate matter from the high-temperature exhaust gases.
引用
收藏
页码：4993 / 5000
页数：8
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