Facile constructing Ti3C2Tx/TiO2@C heterostructures for excellent microwave absorption properties

Huying Yan; Yang Guo; Xingzhi Bai; Jiawei Qi; Haipeng Lu

doi:10.1016/j.jcis.2023.10.076

Facile constructing Ti₃C₂T_x/TiO₂@C heterostructures for excellent microwave absorption properties

J Colloid Interface Sci. 2024 Jan 15;654(Pt B):1483-1491. doi: 10.1016/j.jcis.2023.10.076. Epub 2023 Oct 20.

Authors

Huying Yan¹, Yang Guo², Xingzhi Bai¹, Jiawei Qi¹, Haipeng Lu³

Affiliations

¹ National Engineering Research Center of Electromagnetic Radiation Control Materials, Key Laboratory of Multi-spectral Absorbing Materials and Structures of Ministry of Education, State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China.
² National Engineering Research Center of Electromagnetic Radiation Control Materials, Key Laboratory of Multi-spectral Absorbing Materials and Structures of Ministry of Education, State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China; School of Electrical and Information Engineering, University of Panzhihua, Panzhihua 617000, China. Electronic address: guoyangchn@126.com.
³ National Engineering Research Center of Electromagnetic Radiation Control Materials, Key Laboratory of Multi-spectral Absorbing Materials and Structures of Ministry of Education, State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China. Electronic address: luhaipeng@uestc.edu.cn.

PMID: 37867074
DOI: 10.1016/j.jcis.2023.10.076

Abstract

Optimizing and enhancing the performance of electromagnetic wave (EMW) absorption materials relies on the modification of their composition and structure through heterogeneous interface engineering. Ti₃C₂T_x's high conductivity results in an impedance mismatch, which hinders efficient EMW absorption. Herein, a one-step catalytic chemical vapor deposition (CCVD) method is used to construct the Ti₃C₂T_x/TiO₂@C heterogeneous structure. Upon annealing at 500 °C, amorphous carbon is uniformly deposited on the Ti₃C₂T_x surface, thereby incorporating the scale-like TiO₂ generated during the process. The inclusion of the amorphous carbon layer and TiO₂ reduces the substrate's conductivity, achieving optimized impedance matching. Additionally, building heterogeneous interfaces between Ti₃C₂T_x, TiO₂, and C enriches multiple loss mechanisms involving dipole and interfacial polarization, ultimately enabling optimal EMW absorption performance. The minimum reflection loss (RL_min) value of Ti₃C₂T_x/TiO₂@C-500 is -53.12 dB when its thickness and frequency are 1.15 mm and 13.80 GHz, respectively. Moreover, thermal infrared imaging confirms that coatings fabricated using Ti₃C₂T_x/TiO₂@C-500 demonstrate a favorable heat dissipation rate, validating its effectiveness in addressing the challenge of efficient heat dissipation in electronic devices. This study significantly contributes to the progress of two-dimensional (2D) materials, enabling high-performance EMW absorption and expanding their applications in complex scenarios.

Keywords: EMW absorption properties; Heat dissipation; Heterogeneous interface engineering; Ti(3)C(2)T(x)/TiO(2)@C.