TY - JOUR
T1 - Ti3C2 MXenes with Modified Surface for High-Performance Electromagnetic Absorption and Shielding in the X-Band
AU - Han, Meikang
AU - Yin, Xiaowei
AU - Wu, Heng
AU - Hou, Zexin
AU - Song, Changqing
AU - Li, Xinliang
AU - Zhang, Litong
AU - Cheng, Laifei
N1 - Publisher Copyright:
© 2016 American Chemical Society.
PY - 2016/8/17
Y1 - 2016/8/17
N2 - Electromagnetic (EM) absorbing and shielding composites with tunable absorbing behaviors based on Ti3C2 MXenes are fabricated via HF etching and annealing treatment. Localized sandwich structure without sacrificing the original layered morphology is realized, which is responsible for the enhancement of EM absorbing capability in the X-band. The composite with 50 wt % annealed MXenes exhibits a minimum reflection loss of 48.4 dB at 11.6 GHz, because of the formation of TiO2 nanocrystals and amorphous carbon. Moreover, superior shielding effectiveness with high absorption effectiveness is achieved. The total and absorbing shielding effectiveness of Ti3C2 MXenes in a wax matrix with a thickness of only 1 mm reach values of 76.1 and 67.3 dB, while those of annealed Ti3C2 MXenes/wax composites are 32 and 24.2 dB, respectively. Considering the promising performance of Ti3C2 MXenes with the modified surface, this work is expected to open the door for the expanded applications of MXenes family in EM absorbing and shielding fields.
AB - Electromagnetic (EM) absorbing and shielding composites with tunable absorbing behaviors based on Ti3C2 MXenes are fabricated via HF etching and annealing treatment. Localized sandwich structure without sacrificing the original layered morphology is realized, which is responsible for the enhancement of EM absorbing capability in the X-band. The composite with 50 wt % annealed MXenes exhibits a minimum reflection loss of 48.4 dB at 11.6 GHz, because of the formation of TiO2 nanocrystals and amorphous carbon. Moreover, superior shielding effectiveness with high absorption effectiveness is achieved. The total and absorbing shielding effectiveness of Ti3C2 MXenes in a wax matrix with a thickness of only 1 mm reach values of 76.1 and 67.3 dB, while those of annealed Ti3C2 MXenes/wax composites are 32 and 24.2 dB, respectively. Considering the promising performance of Ti3C2 MXenes with the modified surface, this work is expected to open the door for the expanded applications of MXenes family in EM absorbing and shielding fields.
KW - dielectric
KW - electromagnetic shielding
KW - microwave absorption
KW - mxenes
KW - surface modification
UR - https://www.scopus.com/pages/publications/84983551805
U2 - 10.1021/acsami.6b06455
DO - 10.1021/acsami.6b06455
M3 - 文章
AN - SCOPUS:84983551805
SN - 1944-8244
VL - 8
SP - 21011
EP - 21019
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 32
ER -