TY - JOUR
T1 - Construction of Pt@CNTs/SiC Catalytic Membrane for High-Efficiency Removal of Formaldehyde and Dust
AU - Yuan, Kai
AU - Zeng, Yiqing
AU - Gan, Jinxin
AU - Zhong, Zhaoxiang
AU - Xing, Weihong
N1 - Publisher Copyright:
© 2022 American Chemical Society.
PY - 2023/1/11
Y1 - 2023/1/11
N2 - Catalytic membranes can achieve the simultaneous purification of particulate matter (PM) and gaseous pollutants, and their performance depends on the design of a catalyst and its combination with a membrane material. Herein, a novel Pt@CNTs/SiC catalytic membrane composed of a Pt@CNTs (carbon nanotubes) membrane layer and a porous SiC support was developed for the simultaneous removal of formaldehyde and PM at room temperature. The CNT membrane layer underwent vertically integrated growth on a porous SiC support, which provided the catalytic membrane with a pore size of 7.4 μm and a high gas permeance of 240.2 m3·m-2·h-1·kPa-1. The loading of Pt particles on CNTs slightly decreased the gas permeance of the catalytic membrane (219.9 m3·m-2·h-1·kPa-1) but endowed the membrane with catalytic formaldehyde degradation performance. The obtained Pt@CNTs/SiC catalytic membrane with a 240 μm thick CNT layer and 0.8% Pt loading exhibited 99.999% filtration efficiency for 300 nm SiO2 (face velocity = 1 m/min) and 72.1% formaldehyde degradation (gas flow = 49 mL/min), implying that the Pt@CNTs/SiC membrane has good application potential in the collaborative removal of various air pollutants.
AB - Catalytic membranes can achieve the simultaneous purification of particulate matter (PM) and gaseous pollutants, and their performance depends on the design of a catalyst and its combination with a membrane material. Herein, a novel Pt@CNTs/SiC catalytic membrane composed of a Pt@CNTs (carbon nanotubes) membrane layer and a porous SiC support was developed for the simultaneous removal of formaldehyde and PM at room temperature. The CNT membrane layer underwent vertically integrated growth on a porous SiC support, which provided the catalytic membrane with a pore size of 7.4 μm and a high gas permeance of 240.2 m3·m-2·h-1·kPa-1. The loading of Pt particles on CNTs slightly decreased the gas permeance of the catalytic membrane (219.9 m3·m-2·h-1·kPa-1) but endowed the membrane with catalytic formaldehyde degradation performance. The obtained Pt@CNTs/SiC catalytic membrane with a 240 μm thick CNT layer and 0.8% Pt loading exhibited 99.999% filtration efficiency for 300 nm SiO2 (face velocity = 1 m/min) and 72.1% formaldehyde degradation (gas flow = 49 mL/min), implying that the Pt@CNTs/SiC membrane has good application potential in the collaborative removal of various air pollutants.
UR - http://www.scopus.com/inward/record.url?scp=85144458809&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.2c03670
DO - 10.1021/acs.iecr.2c03670
M3 - 文章
AN - SCOPUS:85144458809
SN - 0888-5885
VL - 62
SP - 247
EP - 256
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 1
ER -