Synthesis of zinc oxide particles coated multiwalled carbon nanotubes: Dielectric properties, electromagnetic interference shielding and microwave absorption

Wei Li Song; Mao Sheng Cao; Bo Wen; Zhi Ling Hou; Jin Cheng; Jie Yuan

doi:10.1016/j.materresbull.2012.03.045

Synthesis of zinc oxide particles coated multiwalled carbon nanotubes: Dielectric properties, electromagnetic interference shielding and microwave absorption

Wei Li Song, Mao Sheng Cao^*, Bo Wen, Zhi Ling Hou, Jin Cheng, Jie Yuan

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

127 Citations (Scopus)

Abstract

Zinc oxide (ZnO) nanoparticles were coated on the surfaces of multiwalled carbon nanotubes (MWCNTs). High resolution transmission electron microscopy images show that the wurtzite ZnO immobilized on the MWCNTs is single-crystalline with a preferential [0 0 0 2] growth direction. A capacitor was generated by the interface of ZnO and MWCNTs, and a resistor-capacitor model could well describe the relationships between the structure and the dielectric properties, electromagnetic interference shielding and microwave-absorption of the composites in the frequency range of 2-18 GHz. The network built by ZnO-immobilized MWCNTs could contribute to the improvement of electrical properties. Resonant peaks associated with the capacitor formed by the interface were observed in the microwave absorption spectra, which suggest that reflection-loss peaks greatly broadens the absorption bandwidth.

Original language	English
Pages (from-to)	1747-1754
Number of pages	8
Journal	Materials Research Bulletin
Volume	47
Issue number	7
DOIs	https://doi.org/10.1016/j.materresbull.2012.03.045
Publication status	Published - Jul 2012

Keywords

A. Composites
A. Interface
B. Chemical synthesis
C. Electron microscopy
D. Dielectric properties

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10.1016/j.materresbull.2012.03.045

Cite this

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title = "Synthesis of zinc oxide particles coated multiwalled carbon nanotubes: Dielectric properties, electromagnetic interference shielding and microwave absorption",

abstract = "Zinc oxide (ZnO) nanoparticles were coated on the surfaces of multiwalled carbon nanotubes (MWCNTs). High resolution transmission electron microscopy images show that the wurtzite ZnO immobilized on the MWCNTs is single-crystalline with a preferential [0 0 0 2] growth direction. A capacitor was generated by the interface of ZnO and MWCNTs, and a resistor-capacitor model could well describe the relationships between the structure and the dielectric properties, electromagnetic interference shielding and microwave-absorption of the composites in the frequency range of 2-18 GHz. The network built by ZnO-immobilized MWCNTs could contribute to the improvement of electrical properties. Resonant peaks associated with the capacitor formed by the interface were observed in the microwave absorption spectra, which suggest that reflection-loss peaks greatly broadens the absorption bandwidth.",

keywords = "A. Composites, A. Interface, B. Chemical synthesis, C. Electron microscopy, D. Dielectric properties",

author = "Song, {Wei Li} and Cao, {Mao Sheng} and Bo Wen and Hou, {Zhi Ling} and Jin Cheng and Jie Yuan",

year = "2012",

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T2 - Dielectric properties, electromagnetic interference shielding and microwave absorption

AU - Song, Wei Li

AU - Cao, Mao Sheng

AU - Wen, Bo

AU - Hou, Zhi Ling

AU - Cheng, Jin

AU - Yuan, Jie

PY - 2012/7

Y1 - 2012/7

N2 - Zinc oxide (ZnO) nanoparticles were coated on the surfaces of multiwalled carbon nanotubes (MWCNTs). High resolution transmission electron microscopy images show that the wurtzite ZnO immobilized on the MWCNTs is single-crystalline with a preferential [0 0 0 2] growth direction. A capacitor was generated by the interface of ZnO and MWCNTs, and a resistor-capacitor model could well describe the relationships between the structure and the dielectric properties, electromagnetic interference shielding and microwave-absorption of the composites in the frequency range of 2-18 GHz. The network built by ZnO-immobilized MWCNTs could contribute to the improvement of electrical properties. Resonant peaks associated with the capacitor formed by the interface were observed in the microwave absorption spectra, which suggest that reflection-loss peaks greatly broadens the absorption bandwidth.

AB - Zinc oxide (ZnO) nanoparticles were coated on the surfaces of multiwalled carbon nanotubes (MWCNTs). High resolution transmission electron microscopy images show that the wurtzite ZnO immobilized on the MWCNTs is single-crystalline with a preferential [0 0 0 2] growth direction. A capacitor was generated by the interface of ZnO and MWCNTs, and a resistor-capacitor model could well describe the relationships between the structure and the dielectric properties, electromagnetic interference shielding and microwave-absorption of the composites in the frequency range of 2-18 GHz. The network built by ZnO-immobilized MWCNTs could contribute to the improvement of electrical properties. Resonant peaks associated with the capacitor formed by the interface were observed in the microwave absorption spectra, which suggest that reflection-loss peaks greatly broadens the absorption bandwidth.

KW - A. Composites

KW - A. Interface

KW - B. Chemical synthesis

KW - C. Electron microscopy

KW - D. Dielectric properties

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U2 - 10.1016/j.materresbull.2012.03.045

DO - 10.1016/j.materresbull.2012.03.045

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SN - 0025-5408

VL - 47

SP - 1747

EP - 1754

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 7

ER -

Synthesis of zinc oxide particles coated multiwalled carbon nanotubes: Dielectric properties, electromagnetic interference shielding and microwave absorption

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Keywords

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