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Lightweight, three-dimensional carbon Nanotube@TiO 2 sponge with enhanced microwave absorption performance
Zichao Mo1; Rongliang Yang1; Dongwei Lu1; Leilei Yang1; Qingmei Hu1; Hongbian Li2; Hai Zhu3; Zikang Tang4; Xuchun Gui1
2018-12-19
Source PublicationCarbon
ISSN1873-3891
Volume144Pages:433-439
Abstract

Porous, spongy absorbers are considered to be the most promising candidates for lightweight and highly efficient microwave absorption material. However, conventional sponges or foams reported previously are difficult to meet the high performance requirements. Here, a lightweight (42 mg/cm3), porous CNT@TiO2 sponge with core-shell structure CNT/TiO2 was successfully prepared via a simple combination of hydrolysis and heat treatment method. In the sponge, the thickness and crystal structure of the TiO2 shell layer, and the mass fraction of TiO2 and CNTs can be precisely controlled by the growth processes, resulting in adjustable dielectric loss properties of the samples. With the optimized component proportion, it was found that a minimum reflection loss value of −31.8 dB was observed at 10.35 GHz, and reflection loss exceeds −10 dB is up to 2.76 GHz for the absorber with the thickness of 2 mm. Moreover, the effective microwave absorption (<10 dB) can be achieved in the range of 3.43–12.0 GHz by adjusting the thickness of the absorber. These results indicate that the CNT@TiO2 sponges can serve as attractive candidate materials for lightweight microwave absorption materials.

KeywordCnts Tio2 Core-shell Dielectric Loss Microwave Absorption
DOI10.1016/j.carbon.2018.12.064
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary
WOS IDWOS:000459991900048
PublisherPERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
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Cited Times [WOS]:75   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorXuchun Gui
Affiliation1.State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou,510275, China
2.CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
3.State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-Sen University, Guangzhou, 510275, China
4.Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau, China
Recommended Citation
GB/T 7714
Zichao Mo,Rongliang Yang,Dongwei Lu,et al. Lightweight, three-dimensional carbon Nanotube@TiO 2 sponge with enhanced microwave absorption performance[J]. Carbon,2018,144:433-439.
APA Zichao Mo,Rongliang Yang,Dongwei Lu,Leilei Yang,Qingmei Hu,Hongbian Li,Hai Zhu,Zikang Tang,&Xuchun Gui.(2018).Lightweight, three-dimensional carbon Nanotube@TiO 2 sponge with enhanced microwave absorption performance.Carbon,144,433-439.
MLA Zichao Mo,et al."Lightweight, three-dimensional carbon Nanotube@TiO 2 sponge with enhanced microwave absorption performance".Carbon 144(2018):433-439.
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