Enhanced terahertz shielding by adding rare Ag nanoparticles to Ti3C2T x MXene fiber membranes

Qi Zou; Chaofan Shi; Bo Liu; Dejun Liu; Duo Cao; Feng Liu; Yi Zhang; Wangzhou Shi

doi:10.1088/1361-6528/ac1296

Enhanced terahertz shielding by adding rare Ag nanoparticles to Ti₃C₂T _x MXene fiber membranes

Nanotechnology. 2021 Jul 22;32(41). doi: 10.1088/1361-6528/ac1296.

Authors

Qi Zou¹, Chaofan Shi¹, Bo Liu¹, Dejun Liu², Duo Cao², Feng Liu¹, Yi Zhang¹, Wangzhou Shi²

Affiliations

¹ Key Laboratory of Optoelectronic Material and Device, Shanghai Normal University, Shanghai 200234, People's Republic of China.
² Mathematics and Science College, Shanghai Normal University, Shanghai 200234, People's Republic of China.

PMID: 34237709
DOI: 10.1088/1361-6528/ac1296

Abstract

Polyacrylonitrile/Ti₃C₂T_xMXene/silver nanoparticles fiber membranes with different silver nanoparticles contents and thickness of porous structure have been successfully prepared by electrospinning. Through the measurement of terahertz time domain spectrum, the shielding effect of the fiber membrane with 1% silver nanoparticles content can reach up to 12 dB. Moreover, the thickness of the spinning fiber membranes is controlled by adjusting the spinning time, so as to better analyze the influence of the thickness of the shielding performance in terahertz band. We attribute this excellent phenomenon to porous structure of the spun fiber membrane and combination of Ti₃C₂T_xMXene with few-layers and silver nanoparticles to increase the absorption and conductivity of the fiber membrane, thereby enhancing the shielding effect in terahertz range. Meanwhile, the prepared polyacrylonitrile/Ti₃C₂T_xMXene/silver nanoparticles fiber membranes show good stability and little change in terahertz shielding effect after high temperature annealing. This may provide potential ideas about the development of high-performance terahertz shielding materials, which are of great significance of terahertz electromagnetic shielding.

Keywords: Ti3C2T x MXene; electrospinning; porous structure; silver nanoparticles; terahertz shielding.