Lanthanum and Neodymium Doped Barium Ferrite-TiO₂/MCNTs/poly(3-methyl thiophene) Composites with Nest Structures: Preparation, Characterization and Electromagnetic Microwave Absorption Properties

Jie Zhao; Jian Yu; Yu Xie; Zhanggao Le; Xiaowei Hong; Suqin Ci; Junhong Chen; Xiaoyan Qing; Weijie Xie; Zhenhai Wen

doi:10.1038/srep20496

Lanthanum and Neodymium Doped Barium Ferrite-TiO₂/MCNTs/poly(3-methyl thiophene) Composites with Nest Structures: Preparation, Characterization and Electromagnetic Microwave Absorption Properties

Sci Rep. 2016 Feb 9:6:20496. doi: 10.1038/srep20496.

Authors

Jie Zhao¹, Jian Yu¹, Yu Xie^{1

2}, Zhanggao Le³, Xiaowei Hong¹, Suqin Ci^{1

2}, Junhong Chen², Xiaoyan Qing¹, Weijie Xie¹, Zhenhai Wen^{1

2

4}

Affiliations

¹ College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang, 330063, PR China.
² Department of Mechanical Engineering, University of Wisconsin-Milwaukee, Milwaukee, 53211, USA.
³ Department of Applied Chemistry, East China Institute of Technology, Nanchang, 330013, PR China.
⁴ Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, PR China.

Abstract

We report herein the synthesis of a novel nest structured electromagnetic composite through in-situ chemical polymerization of 3-methyl thiophene (3MT) in the presence of the BaFe11.92(LaNd)0.04O19-TiO2 (BFTO) nanoparticles and MCNTs. As an absorbing material, the BFTO/MCNTs/P3MT/wax composites were prepared at various loadings of BFTO/MCNTs/P3MT (0.2:0.10:1.0 ~ 0.2:0.30:1.0), and they exhibited strong microwave absorption properties in the range of 1.0-18 GHz. When the loading of BFTO/MCNTs/P3MT is 0.2:0.30:1.0, the composite has a strongest absorbing peak at 11.04 GHz, and achieves a maximum absorbing value of -21.56 dB. The absorbing peak position moves to higher frequencies with the increase of MCNTs content. The mechanism for microwave absorption of these composites has been explained in detail.

Publication types

Research Support, Non-U.S. Gov't