Sandwich structures of graphene@Fe3O4@PANI decorated with TiO2 nanosheets for enhanced electromagnetic wave absorption properties

Liu, Panbo; Huang, Ying; Yang, Yiwen; Yan, Jing; Zhang, Xiang

doi:10.1016/j.jallcom.2015.12.022

Cited by 85 publications

(36 citation statements)

References 30 publications

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“…c, which can be fitted into three peaks by curve fitting of the N 1s spectrum of PANI and GMP nanocomposites. The binding energy peaks at 398.7 eV is assigned to the quinoid imine (N), the peak at 400.0 eV is related to the benzenoid amine (NH) and the peak at 401.4 eV is attributed to the positively charged imine in the bipolaron state and protonated amine in the polaron state (N + ) for PANI . By calculating the proportion of the bipolaron state and the polaron state (N + ) in the total nitrogen spectrum, the degree of doping of PANI can be obtained.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, interfacial interactions, and properties of reduced graphene oxide/Fe₃O₄/polyaniline nanocomposites

Liu

Zhu

2018

Polymer Composites

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In this study, a ternary reduced graphene oxide/Fe3O4/polyaniline (PANI) (GMP) nanostructure is designed and synthesized via a facile two‐step approach, including synthesis of reduced graphene oxide/Fe3O4 (GM) using solvothermal method and in situ polymerization of PANI on the surface of GM. The structure and morphological of the as‐prepared samples was characterized by X‐ray diffraction, Fourier transform infrared, UV–vis spectra and Transmission Electron Microscope. The results indicated the successful synthesis of GMP composite materials with the Fe3O4 (<30 nm) loaded on the rGO, whose surface covered with PANI. The magnetic properties, redox activity and microwave absorption properties were characterized by vibrating sample magnetometer, cyclic voltammetry, and vector network analyzer. The magnetic properties of GMP composite exhibit superparamagnetic property with a saturation magnetization of 22.88 emu/g. The redox activity of GMP expanding to neutral environment is caused by the interfacial electron transport interaction. The microwave absorption performance of GMP is up to −28.2 dB at 14.4 GHz and the absorption bandwidths below −10 dB are 5.4 GHz (from 12.6 to 18 GHz) with a thickness of 2 mm. This can be attributed to its well‐organized nanoscale morphology, which bringing the impedance matching of the individual components of GMP. POLYM. COMPOS., 40:E1111–E1119, 2019. © 2018 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

Synthesis, characterization, interfacial interactions, and properties of reduced graphene oxide/Fe₃O₄/polyaniline nanocomposites

Liu

Zhu

2018

Polymer Composites

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“…A high charge transfer resistance was achieved through the use of 3 wt% of filler compared with that of pure epoxy. Other researchers have investigated two phase PANi/FeO 4 composites [26][27][28][29][30][31][32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, electrical properties, and kinetic thermal analysis of polyaniline/ polyvinyl alcohol - magnetite nanocomposites film

Alfannakh

Arafat

Ibrahim

2019

Science and Engineering of Composite Materials

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Polyaniline-poly vinyl alcohol (PANI-PVA) conducting blends containing 15 wt% aniline were synthesized by in situ polymerization of aniline. Three-phase polymer blended nanocomposites with different contents of magnetite (5, 10 and 15 wt.%) were also synthesized. We measured the current-voltage (I-V) curves for the conducting blend and its magnetite nanocomposite. We also measured their thermal stability, and performed kinetic analysis through thermogravimetric analysis. We observed that the three phase nanocomposites showed enhanced electrical conductivity compared with that of the conductive blend, and no electrical hysteresis. The PVA/PANi blend was more stable above 350∘C and the addition of Fe3O4 enhanced the thermal stability of the conductive blend. The apparent activation energy of the three phase nanocomposites was greater than those of both the pure PVA and PVA/PANi samples. These results suggest that such three phase nanocomposites could be used in a range of applications.

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“…Maximum reflection loss of at −47.9 dB at 12.4 GHz, −39.7 dB at 9.2 GHz and −43.7 dB at 13.8 GHz was reported for CoFe 2 O 4 , NiFe 2 O 4 and Co 3 O 4 ‐graphene composites, respectively. A quaternary composite consisted of graphene, Fe 3 O 4 , PANI, TiO 2 showed superparamagnetic behavior and a reflection loss of −41.8 dB at 14.4 GHz . Such hierarchical structures induce extra interfacial polarization for attenuation of EM waves while the void space existing between different components such as Fe 3 O 4 and TiO 2 result in relatively large specific surfaces area providing more active sites for reflection and scattering of EM waves effectively.…”

Section: Applications Of Graphene‐based Materials Synthesized From Hymentioning

confidence: 99%

“…This composite (composed of 99.5 wt% TiO 2 , 0.45 wt% MoS 2 and 0.05 wt% rGO) showed excellent photocatalytic H 2 production activity. A ternary combination of CdS‐ZnO‐graphene composite, Fe 3 O 4 ‐TiO 2 ‐graphene composite, and quaternary combination of Fe 3 O 4 ‐polyaniline‐TiO 2 ‐graphene composite were also synthesized solvothermally . The coupling of metal oxide and metal sulfide would benefit to improve the charge separation and result in longer lifetime of the charge carriers, while graphene would act as an acceptor of the photo generated electrons from both semiconductors to ensure fast charge transportation.…”

Section: Graphene‐based Materials From Subcritical Hydro‐/solvothermamentioning

confidence: 99%

Advances in Subcritical Hydro‐/Solvothermal Processing of Graphene Materials

2017

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Many promising graphene-based materials are kept away from mainstream applications due to problems of scalability and environmental concerns in their processing. Hydro-/solvothermal techniques overwhelmingly satisfy both the aforementioned criteria, and have matured as alternatives to wet-chemical methods with advances made over the past few decades. The insolubility of graphene in many solvents poses considerable difficulties in their processing. In this context hydro-/solvothermal techniques present an ideal opportunity for processing of graphenic materials with their versatility in manipulating the physical and thermodynamic properties of the solvent. The flexibility in hydro-/solvothermal techniques for manipulation of solvent composition, temperature and pressure provides numerous handles to manipulate graphene-based materials during synthesis. This review provides a comprehensive look at the subcritical hydro-/solvothermal synthesis of graphene-based functional materials and their applications. Several key synthetic strategies governing the morphology and properties of the products such as temperature, pressure, and solvent effects are elaborated. Advances in the synthesis, doping, and functionalization of graphene in hydro-/solvothermal media are highlighted together with our perspectives in the field.

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Sandwich structures of graphene@Fe3O4@PANI decorated with TiO2 nanosheets for enhanced electromagnetic wave absorption properties

Cited by 85 publications

References 30 publications

Synthesis, characterization, interfacial interactions, and properties of reduced graphene oxide/Fe₃O₄/polyaniline nanocomposites

Synthesis, characterization, interfacial interactions, and properties of reduced graphene oxide/Fe₃O₄/polyaniline nanocomposites

Synthesis, electrical properties, and kinetic thermal analysis of polyaniline/ polyvinyl alcohol - magnetite nanocomposites film

Advances in Subcritical Hydro‐/Solvothermal Processing of Graphene Materials

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Sandwich structures of graphene@Fe3O4@PANI decorated with TiO2 nanosheets for enhanced electromagnetic wave absorption properties

Cited by 85 publications

References 30 publications

Synthesis, characterization, interfacial interactions, and properties of reduced graphene oxide/Fe3O4/polyaniline nanocomposites

Synthesis, characterization, interfacial interactions, and properties of reduced graphene oxide/Fe3O4/polyaniline nanocomposites

Synthesis, electrical properties, and kinetic thermal analysis of polyaniline/ polyvinyl alcohol - magnetite nanocomposites film

Advances in Subcritical Hydro‐/Solvothermal Processing of Graphene Materials

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Synthesis, characterization, interfacial interactions, and properties of reduced graphene oxide/Fe₃O₄/polyaniline nanocomposites

Synthesis, characterization, interfacial interactions, and properties of reduced graphene oxide/Fe₃O₄/polyaniline nanocomposites