A broadband and strong microwave absorption of Ti3C2Tx MXene/PPy composites with a core-shell structure

Lei, Yanhua; Ding, Mengchao; Wu, Haikun; Yin, Dong; Li, Yang; Jiang, Bochen; Sun, Kai; Zhang, Yuliang; Du, Hailiang

doi:10.1016/j.synthmet.2022.117254

Cited by 10 publications

(4 citation statements)

References 55 publications

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“…The spectra reveal the presence of F 1s, O 1s, Ti 2p, C 1s, and Ti 3p from MXene at 686.1, 531.2, 456.0, 285.2, and 35.1 eV, respectively, as well as N 1s from PPy at 400.3 eV existing in MXene/PPy hybrids. For MPC, the fine spectra of C 1s corresponded to C–Ti, C–Ti, C–C, C–N/CN, C–C at 281.6, 284.1, 284.8, 285.6, and 287.9 eV, respectively (Figure f). ,, The peaks of N 1s at 399.4, 400.1, and 401.2 eV belonged to −N , −NH–, and −N + -, respectively (Figure g). The peaks corresponded to Ti 3+ (2p 1/2 2p 3/2 ) at 464.5 and 456.0 eV, 461.3 and 454.9 eV for Ti 2+ (2p 1/2 2p 3/2 ), and the peak at 459.0 eV was attributed to Ti–O 2‑ x –F x (Figure h) …”

Section: Resultsmentioning

confidence: 94%

“…Figure 2e 2f). 41,43,49 The peaks of N 1s at 399.4, 400.1, and 401.2 eV belonged to −N� , −NH−, and −N + -, respectively (Figure 2g). The peaks corresponded to Ti 3+ (2p 1/2 2p 3/2 ) at 464.5 and 456.0 eV, 461.3 and 454.9 eV for Ti 2+ (2p 1/2 2p 3/2 ), and the peak at 459.0 eV was attributed to Ti−O 2-x −F x (Figure 2h).…”

Section: Resultsmentioning

confidence: 99%

“…39 Tong et al created sandwich-structured Ti 3 C 2 T x /PPy hybrids via the in situ oxidative polymerization, achieving a minimum reflection loss of −49.2 dB at a thickness of 3.2 mm and an effective absorption bandwidth spanning from 12.4−17.3 GHz. 40 Additionally, Lei et al 41 and Liu et al 42 prepared MXene/ PPy composites for microwave absorption by in situ polymer-ization and microemulsion polymerization methods, respectively. While these pioneering studies have made significant strides in leveraging PPy-based materials for EMW absorption, there still remain several challenges, including the lack of exploration of the influence of PPy morphology on the absorption performance of MXene/PPy composites or hybrids.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Polymorphic Polypyrrole-Modified MXene Nanosheets for Broadband Microwave Absorption

Shen,

Wang,

Huang

et al. 2024

ACS Appl. Nano Mater.

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The absorption of microwaves is significantly influenced by the structure of the absorber. Typically, the electromagnetic parameters can be adjusted by modifying the structure of the absorber. In this work, a novel approach is proposed to enhance microwave absorption properties by adjusting the impedance matching of MXene nanosheets. MXene/PPy hybrids with loose lamellar structure are synthesized through self-assembly of positively charged polypyrrole (PPy) and MXene nanosheets with negative charges, facilitated by electrostatic and hydrogen-bonding interactions. The impact of polymorphic PPy on the electromagnetic parameters and microwave absorption properties of MXene nanosheets is comprehensively explored. It is found that the addition of PPy with different morphologies can effectively tune the electromagnetic parameters of the MXene nanosheets. Particularly, the microwave absorption capabilities are significantly enhanced when PPy nanopaperclips are uniformly adsorbed on the surface of the MXene nanosheets. This enhancement is attributed to the favorable impedance match between PPy nanopaperclips and MXene nanosheets along with the exceptional attenuation capabilities of PPy. A minimum reflection loss (RLmin) of −47.85 dB is achieved at an ultrathin matched thickness of 1.6 mm, and the maximum effective absorption bandwidth (EABmax) is 5.01 GHz at 1.9 mm for the prepared MXene/PPy nanopaperclip hybrid with a filling rate of 20%. Furthermore, a bandwidth with 99% absorption efficiency of 15.4 GHz (2.4–18.0 GHz) can be attained when the thickness of the absorber ranges from 1.6 to 10.0 mm. It is anticipated that this work will provide valuable insights for the manufacture of high-performance microwave absorbers.

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Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Polymorphic Polypyrrole-Modified MXene Nanosheets for Broadband Microwave Absorption

Shen,

Wang,

Huang

et al. 2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…Lei et al [39] layered Ti 3 C 2 T x MXene surface with poly pyrrole particles coated hence using in-situ polymerization to increase the composites' electrical conductivity and wave-absorbing capabilities. The MXene/PPy wave-absorbing material has a maximum reflect distortion of -68 dB at 2.68 mm and 10 wt% filler.…”

Section: Mxene-based/polymer Composite Wave-absorbing Materialsmentioning

confidence: 99%

Research Progress of MXene Composites In Electromagetic Wave Absorption

Cao,

Zhang,

Qiu

et al. 2024

J. Phys.: Conf. Ser.

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The issue of electromagnetic wave pollution is increasingly severe due to the rapid advancement of communication technology. Advanced electromagnetic wave absorbing materials have become an important research field. The excellent microwave absorption capabilities of the MXene composite can be attributed to its unique two-dimensional structure, abundant adjustable surfaces with functional groups, significant specific surface area, and high electrical conductivity. In this paper, the electromagnetic properties, electromagnetic wave absorption advantages and electromagnetic wave absorption principles of MXene compared with other materials are reviewed, and the wave absorption properties of MXene/graphene, MXene/carbon nanotubes, MXene/polymer, MXene/metal particles and MXene/oxide composites are summarized and analyzed. It is being investigated what the future holds for MXene and its mixed absorbent materials.

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Regulation of PPy Growth States by Employing Porous Organic Polymers to Obtain Excellent Microwave Absorption Performance

Zhang,

Du,

Tang

et al. 2024

Small

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Regulating the different growth states of polypyrrole (PPy) is a key strategy for obtaining PPy composites with high electromagnetic wave (EMW) absorption properties. This work finds that the growth states of PPy is regulated by controlling the amount of pyrrole added during the preparation of composites, so as to regulate the development of conductive networks to obtain excellent EMW absorption performance. The POP/PPy‐200 composite achieves an effective absorption bandwidth (EAB) of 6.24 GHz (11.76–18.00 GHz) at a thickness of only 2.34 mm, covering 100% of the Ku band. The minimum reflection loss of −73.05 dB can be demonstrated at a thickness of only 2.29 mm, while at the same time showing an EAB of 5.96 GHz to meet the requirements of “thin”, “light”, “wide”, and “strong”. Such excellent EMW absorption performance is attributed to the conductive loss caused by the regulation of the growth states of PPy and the polarization loss caused by the heterostructure. This work also addresses the key challenge that porous organic polymers (POPs) cannot be applied to EMW absorption due to poor conductivity and providing new insights into the candidates for EMW absorbing materials.

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A broadband and strong microwave absorption of Ti3C2Tx MXene/PPy composites with a core-shell structure

Cited by 10 publications

References 55 publications

Polymorphic Polypyrrole-Modified MXene Nanosheets for Broadband Microwave Absorption

Polymorphic Polypyrrole-Modified MXene Nanosheets for Broadband Microwave Absorption

Research Progress of MXene Composites In Electromagetic Wave Absorption

Regulation of PPy Growth States by Employing Porous Organic Polymers to Obtain Excellent Microwave Absorption Performance

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