Investigation of the Co/polyacrylonitrile nanocomposite electronic structure: X-ray spectroscopy analysis

Yalovega, G. E.; Semenistaya, T. V.; Shmatko, V. A.; Kremennaya, M. A.; Tsud, Nataliya

doi:10.1016/j.radphyschem.2019.04.006

Cited by 5 publications

(4 citation statements)

References 20 publications

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“…Supporting Information). The next peak, C2, associated with C1s(C─H) → 𝜎*C─H transitions, [40][41][42]44] remained consistent across SMP-10/AN wt ratios of 0.4/0.6, 0.5/0.5, and 0.6/0.4, exhibiting higher intensity than that in wt ratio SMP-10/AN = 1.0/0.0. This suggests a facilitated release of hydrogenated species in the absence of AN.…”

Section: Thermally-induced Structural Changes In 3d Printed Pan-prece...mentioning

confidence: 95%

“…This suggests a facilitated release of hydrogenated species in the absence of AN. [42,44] The distinctive feature denoted as C3 is associated with either to C1s→𝜋*C═O and/or C1s (C≡N) → 𝜋*C≡N transitions. [40,41,43] Despite its heightened intensity in AN-rich ceramics (wt ratio SMP-10/AN = 0.4/0.6), this peak exhibit discrete variations among the other AN/SMP wt ratios.…”

Section: Thermally-induced Structural Changes In 3d Printed Pan-prece...mentioning

confidence: 99%

“…[41,42] The broadening of C4 in the carbon-ceramic multi-materials suggests a mixed sp 3 bonding environment, from spectral contributions of Si-containing precursor (SMP-10) and the N-containing precursor (PAN) on the electronic structure, in agreement with our C1s XPS results (Figure S8, Supporting Information). The C5 peak, positioned at ≈ 303 eV, is associated with C 1s→ 𝜎 * C═N, and sp 3 𝜎*C─C transitions, [40,41,44] correlated to AN and SMP-10 contributions, respectively. In the PIMS carbon-ceramic multimaterials, C5 peak was more pronounced, similarly, to reported PAN-derived materials.…”

Section: Thermally-induced Structural Changes In 3d Printed Pan-prece...mentioning

confidence: 99%

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Microphase Separation 3D Printing of Binary Inorganic Polymer Precursors to Prepare Nanostructured Carbon‐Ceramic Multimaterials

Bobrin,

Hackbarth,

Bonsu

et al. 2024

Adv Materials Technologies

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Traditionally, combining carbon and ceramic materials has been challenging due to their different chemical and physical properties. Despite the development of numerous methodologies for their synthesis, these techniques frequently necessitate intricate, multi‐stage protocols and specialized equipment. This study introduces a novel approach for fabricating nanostructured carbon‐ceramic multimaterials through polymerization‐induced microphase separation 3D printing. By combining inorganic precursors, polycarbosilane, and acrylonitrile (AN) within a photocurable resin, heterogeneous nanostructured materials composed of PAN‐preceramic and sacrificial polymer phases are 3D printed. Upon pyrolysis, PAN‐preceramic domains transformed into a carbon‐ceramic matrix while sacrificial polymer domains thermally decomposed to yield nanoscale voids. The utilization of synchrotron X‐ray spectroscopy and microscopy techniques revealed that the phase compositions and microstructure of the resulting multi‐materials are significantly influenced by the initial composition of the resins. The co‐existence of ceramic and carbon phases within a single 3D printed material brought together a combination of properties from both phases, such as the low thermal conductivity of ceramics and the relatively high electrical conductivity of carbon, along with the exceptional chemical resistance. The insights into the microstructure, atomic configuration, and property relationships of the resulting materials have broad implications for the development of multi‐phase nanostructured hybrid materials.

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Section: Thermally-induced Structural Changes In 3d Printed Pan-prece...mentioning

confidence: 95%

Section: Thermally-induced Structural Changes In 3d Printed Pan-prece...mentioning

confidence: 99%

Section: Thermally-induced Structural Changes In 3d Printed Pan-prece...mentioning

confidence: 99%

See 1 more Smart Citation

Microphase Separation 3D Printing of Binary Inorganic Polymer Precursors to Prepare Nanostructured Carbon‐Ceramic Multimaterials

Bobrin,

Hackbarth,

Bonsu

et al. 2024

Adv Materials Technologies

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“…Analysis of up-to-date publications shows that the theoretical interpretation of XANES spectra of nanocomposites based on transition metal oxides and carbon nanotubes is rarely used due to the complexity of applying this technique to the study of nanocomposites. However, the theoretical analysis of the experimental XANES spectra can be used to investigate the mechanisms of interaction between the carbon and metal-containing components in composite systems [ 34 , 35 ].…”

Section: Introductionmentioning

confidence: 99%

Interfacial Interaction in MeOx/MWNTs (Me–Cu, Ni) Nanostructures as Efficient Electrode Materials for High-Performance Supercapacitors

Yalovega,

Brzhezinskaya,

Dmitriev

et al. 2024

Nanomaterials

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Due to their unique physical and chemical properties, complex nanostructures based on carbon nanotubes and transition metal oxides are considered promising electrode materials for the fabrication of high-performance supercapacitors with a fast charge rate, high power density, and long cycle life. The crucial role in determining their efficiency is played by the properties of the interface in such nanostructures, among them, the type of chemical bonds between their components. The complementary theoretical and experimental methods, including dispersion-corrected density functional theory (DFT-D3) within GGA-PBE approximation, scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman, X-ray photoelectron, and X-ray absorption spectroscopies, were applied in the present work for the comprehensive investigation of surface morphology, structure, and electronic properties in CuOx/MWCNTs and NiOx/MWCNTs. As a result, the type of interfacial interaction and its correlation with electrochemical characteristics were determined. It was found that the presence of both Ni–O–C and Ni–C bonds can increase the contact between NiO and MWCNTs, and, through this, promote electron transfer between NiO and MWCNTs. For NiOx/MWCNTs, better electrochemical characteristics were observed than for CuOx/MWCNTs, in which the interfacial interaction is determined only by bonding through Cu–O–C bonds. The electrochemical properties of CuOx/MWCNTs and NiOx/MWCNTs were studied to demonstrate the effect of interfacial interaction on their efficiency as electrode materials for supercapacitor applications.

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X-ray Spectroscopy Study of the Atomic and Electronic Structure of Polyacrylonitrile-Based Nanocomposites at Different Stages of Formation

Kremennaya

Shmatko

Михайлова

et al. 2020

Springer Proceedings in Materials

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Investigation of the Co/polyacrylonitrile nanocomposite electronic structure: X-ray spectroscopy analysis

Cited by 5 publications

References 20 publications

Microphase Separation 3D Printing of Binary Inorganic Polymer Precursors to Prepare Nanostructured Carbon‐Ceramic Multimaterials

Microphase Separation 3D Printing of Binary Inorganic Polymer Precursors to Prepare Nanostructured Carbon‐Ceramic Multimaterials

Interfacial Interaction in MeOx/MWNTs (Me–Cu, Ni) Nanostructures as Efficient Electrode Materials for High-Performance Supercapacitors

X-ray Spectroscopy Study of the Atomic and Electronic Structure of Polyacrylonitrile-Based Nanocomposites at Different Stages of Formation

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