Lightweight, three-dimensional carbon Nanotube@TiO2 sponge with enhanced microwave absorption performance

Mo, Zichao; Yang, Rongliang; Lu, Dongwei; Yang, Leilei; Hu, Qingmei; Li, Hongbian; Zhu, Hancheng; Tang, Zikang; Gui, Xuchun

doi:10.1016/j.carbon.2018.12.064

Cited by 158 publications

(75 citation statements)

References 37 publications

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“…Though research and development into microwave absorbing materials [ 2–14 ] is growing exponentially, [ 15 ] the current R&D pipeline has yet to see the implementation of data‐driven methods into the materials development cycle. Current research involves rigorous materials development though complex nanostructure formulation and composite development.…”

Section: Figurementioning

confidence: 99%

Obtaining Strong, Broadband Microwave Absorption of Polyaniline Through Data‐Driven Materials Discovery

Green

Tran

Chen

2020

Adv Materials Inter

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materials development methods do not guarantee results. Yet, the continued development of microwave absorbing materials is imperative. These materials are highly utilized in the defense [16-22] and telecommunications industries, [18,23-27] as means for reducing radar cross sections for stealth technology, [28,29] and providing electromagnetic interference shielding for the information processing and transport capabilities in electronic devices. The progression of research and development in the field of MAMs continues to accelerate, and researchers are in need of new methods for materials development and analysis. One of the most common components integrated into materials systems for microwave absorption is polyaniline. [30-36] This polymer, particularly the protonated Emeraldine Salt variation due to its high conductivity, is a popular material for MAM research and development due the strong dielectric response it demonstrates when irradiated with GHz-range electromagnetic energy. [15] For example, Liu et al. embedded a graphene-polyaniline matrix with nickel ferrite in an attempt to synergistically couple the magnetic properties of the ferrite with the dielectric nature of the matrix. This coupling resulted in a strong microwave interaction and reflection loss of −50.5 dB at 12.5 GHz, with an effective bandwidth of 5.3 GHz. [30] Wang et al. took a similar approach, imbedding a nickel-zinc ferrite into a polyaniline matrix, with a similar goal of coupling the strong dielectric action of the polyaniline material with a magnetic material. The maximal reflection loss realized by these efforts was −41 dB at 12.8 GHz and a 5 GHz effective bandwidth with a material thickness of 2.6 mm. [31] In this study, we demonstrate for the first time a data-driven process for optimizing the microwave absorbing properties of polyaniline. The final reflection loss is maximally reported as −88.54 dB with (f, d) coordinates of (7.0 GHz, 3.8 mm) 5.5 GHz with a 2.1 mm thickness. These results are record-setting for polyaniline-based materials, and the methods used to achieve these experimentally-validated results are thought to be scalable and applicable to the type of research methodologies prevalent in MAM development. As such, this type of data-driven optimization has the potential to revolutionize materials R&D for microwave absorption. The polyaniline materials were synthesized according to standard literature procedures [37] and characterized via X-ray diffraction (XRD), Fourier-transform infrared (FTIR), and Microwave absorbing materials (MAMs) are highly utilized in the defense and telecommunications industries, as means for reducing radar cross sections for stealth technology, and providing electromagnetic interference shielding for the information processing and transport capabilities in electronic devices. Polyaniline materials have attracted enormous attention in the field of MAM development due to their strong dielectric properties. In this manuscript, the strong dielectric action of polyaniline is utilized to demonstrate...

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Section: Figurementioning

confidence: 99%

Obtaining Strong, Broadband Microwave Absorption of Polyaniline Through Data‐Driven Materials Discovery

Green

Tran

Chen

2020

Adv Materials Inter

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“…The electromagnetic parameters of samples mixed with wax (50 wt.%) were measured at 2~18 GHz using Vector network analyzer (N5245A, Agilent). The reflection loss (RL) values were calculated based on transmission line theory using the following equations [16,17].…”

Section: Microwave Absorption Measurementmentioning

confidence: 99%

Carbon Nanofibers Propped Hierarchical Porous SiOC Ceramics Toward Efficient Microwave Absorption

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The hierarchical porous SiOC ceramics (HPSCs) have been prepared by the pyrolysis of precursors (the mixture of dimethicone and KH-570) and polyacrylonitrile nanofibers (porous template). The HPSCs possess hierarchical porous structure with a BET surface area of 51.4 m 2 /g and have a good anti-oxidation property (only 5.1 wt.% weight loss). Owing to the porous structure, the HPSCs deliver an optimal reflection loss value of − 47.9 dB at 12.24 GHz and an effective absorption bandwidth of 4.56 GHz with a thickness of 2.3 mm. The amorphous SiOC, SiO x , and free carbon components within SiOC make contributions to enhancing dipolar polarization. Besides, the abundant interfaces between SiOC and carbon nanofibers (CNFs) are favorable for improving interfacial polarization. The conductive loss arisen from cross-linked CNFs can also boost the microwave absorption performance.

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“…At the same time, because of their electromagnetic radiation pollution, they also bring many hidden dangers. In order to address this issue, electromagnetic (EM) wave absorbing materials have attracted an abundance of attention from various fields (Sun et al, 2014 ; Li et al, 2018a ; Liu et al, 2019 ; Mo et al, 2019 ). Magnetic materials and their composites are accepted as one of the most significant EM absorbing materials, owing much to their high EM performance, broad frequency range response, low price, easy preparation, and excellent chemical stability (Zhao et al, 2013 ; Dhawan et al, 2015 ; Qiu et al, 2017 ; Tang et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Bi2Fe4O9 Nanocubes Loaded on Reduced Graphene Oxide for Enhanced Electromagnetic Absorbing Properties

et al. 2020

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Bi 2 Fe 4 O 9 (BFO) nanocubes were prepared in proportion using a simple and easy hydrothermal method, and were then assembled on reduced graphene oxide (rGO) multilayered sheets. The excellent microwave absorption properties of Bi 2 Fe 4 O 9 /rGO nanohybrids were achieved by properly adjusting the impedance matching and getting a high attenuation capability contributed from different ratios of the BFO and rGO. A minimum reflection loss value of −61.5 dB at 12.8 GHz was obtained with a Bi 2 Fe 4 O 9 /rGO ratio of 2:1, and the broadest bandwidth below −10 dB was up to 5.0 GHz (from 10.8 to 15.8 GHz) with a thickness of 2.4 mm. Additionally, the elementary mechanism of wave absorption performance is also investigated. Keywords: Bi 2 Fe 4 O 9 (BFO) nanocubes, Bi 2 Fe 4 O 9 /rGO nanohybrids, wave absorption property, a potential EMW material, hydrothermal method, a rather wide frequency band, synergy effect

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Lightweight, three-dimensional carbon Nanotube@TiO2 sponge with enhanced microwave absorption performance

Cited by 158 publications

References 37 publications

Obtaining Strong, Broadband Microwave Absorption of Polyaniline Through Data‐Driven Materials Discovery

Obtaining Strong, Broadband Microwave Absorption of Polyaniline Through Data‐Driven Materials Discovery

Carbon Nanofibers Propped Hierarchical Porous SiOC Ceramics Toward Efficient Microwave Absorption

Three-Dimensional Bi2Fe4O9 Nanocubes Loaded on Reduced Graphene Oxide for Enhanced Electromagnetic Absorbing Properties

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