Template-free self-assembly of MXene and CoNi-bimetal MOF into intertwined one-dimensional heterostructure and its microwave absorbing properties

被引：181

作者：

Wu, Fei ^{[1
,2
]}

Liu, Zihao ^{[1
]}

Wang, Jiqi ^{[1
]}

Shah, Tariq ^{[1
]}

Liu, Pei ^{[1
,4
]}

Zhang, Qiuyu ^{[1
,2
]}

Zhang, Baoliang ^{[1
,3
]}

机构：

[1] Northwestern Polytech Univ, Sch Chem & Chem Engn, Xian 710072, Peoples R China

[2] Northwestern Polytech Univ, Xian Key Lab Funct Organ Porous Mat, Xian 710129, Peoples R China

[3] Sunresins New Mat Co Ltd, Shaanxi Engn & Res Ctr Funct Polymers Adsorpt & S, Xian 710072, Peoples R China

[4] Guangxi Normal Univ, State Key Lab Chem & Mol Engn Med Resources, Guilin 541001, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2021年 / 422卷

关键词：

MXene fibers; Microwave absorption; CoNi-bimetal MOFs; Heterostructure; ELECTROMAGNETIC PARAMETERS; SURFACE-AREA; ABSORPTION; ULTRALIGHT; FABRICATION; NANOSHEETS; AEROGELS; FOAMS;

D O I：

10.1016/j.cej.2021.130591

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Transition metal carbide (MXene) has attracted much attention due to its special structure and surface chemical properties. However, like other two-dimensional (2D) materials, its application is severely affected by stacking and agglomeration. Herein, we construct intertwined one-dimensional (1D) heterostructure via the assembly of MXene and metal-organic frameworks (MOFs) without any assistance of template and rigid framework. The results have shown that by manipulating the loading of MOFs on 1D MXene fibers, the growth of CNTs can be effectively controlled, thereby realizing the regulation of electromagnetic parameters. The 3D cross-linked network constructed by intertwined 1D heterogeneous components (MXene fibers/CoNi/C and CNTs/CoNi) features extensive heterogeneous interfaces, hierarchical pore structure and desirable conductivity, exhibiting superior microwave absorbing properties. Notably, under a matching thickness of 1.6 mm, the minimum reflection loss (RLmin) of the absorber (MMC) exceeds -51.6 dB, and the effective absorption bandwidth (EAB, RL < -10 dB) covers 4.5 GHz (13.2-17.7 GHz). The results might shed light on the preparation of efficient microwave absorbers.

引用

页数：12