{"title":"Flexible and innovative PVA/ZrO2/g-C3N4/CNT nanocomposites film for optoelectronic applications","authors":"","doi":"10.1016/j.polymertesting.2024.108604","DOIUrl":null,"url":null,"abstract":"<div><div>This study successfully prepared polyvinyl alcohol (PVA) polymer films doped with ZrO<sub>2</sub>/(g-C<sub>3</sub>N<sub>4</sub>/CNT) nanofillers using the solution casting technique. The crystal structure of the nanocomposite films was characterized by X-ray diffraction (XRD), revealing the semi-crystalline nature of PVA and an average ZrO<sub>2</sub> crystallite size of 13.17 nm. Fourier-transform infrared (FTIR) spectroscopy confirmed the chemical composition and functional groups present in the nanocomposites. Scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) analysis showed uniform dispersion of the nanofillers without noticeable phase separation, with EDX confirming the successful incorporation of ZrO<sub>2</sub>, g-C<sub>3</sub>N<sub>4</sub>, and CNT into the PVA matrix. X-ray photoelectron spectroscopy (XPS) further validated the elemental composition and chemical states, indicating the presence of carbon, oxygen, nitrogen, and zirconium. Optical analysis demonstrated that increasing ZrO<sub>2</sub>/(g-C<sub>3</sub>N<sub>4</sub>/CNT) content reduced the direct and indirect band gaps from 5.41 eV to 5.25 eV and from 5.18 eV to 4.92 eV, respectively. In addition, the single-oscillator energy (<em>E</em><sub><em>0</em></sub>) and dispersion energy (<em>E</em><sub><em>d</em></sub>) increased, while the static refractive index (n<sub>0</sub>) decreased. Improvements were also observed in linear optical susceptibility (χ<sup>(1)</sup>) and third-order nonlinear optical susceptibility (χ<sup>(3)</sup>), enhancing the polarizability of the polymer molecules. These results indicate that PVA films doped with ZrO<sub>2</sub>/(g-C<sub>3</sub>N<sub>4</sub>/CNT) hold promise for optoelectronic applications due to their enhanced optical properties.</div></div>","PeriodicalId":20628,"journal":{"name":"Polymer Testing","volume":null,"pages":null},"PeriodicalIF":5.0000,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer Testing","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0142941824002812","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CHARACTERIZATION & TESTING","Score":null,"Total":0}
引用次数: 0
Abstract
This study successfully prepared polyvinyl alcohol (PVA) polymer films doped with ZrO2/(g-C3N4/CNT) nanofillers using the solution casting technique. The crystal structure of the nanocomposite films was characterized by X-ray diffraction (XRD), revealing the semi-crystalline nature of PVA and an average ZrO2 crystallite size of 13.17 nm. Fourier-transform infrared (FTIR) spectroscopy confirmed the chemical composition and functional groups present in the nanocomposites. Scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) analysis showed uniform dispersion of the nanofillers without noticeable phase separation, with EDX confirming the successful incorporation of ZrO2, g-C3N4, and CNT into the PVA matrix. X-ray photoelectron spectroscopy (XPS) further validated the elemental composition and chemical states, indicating the presence of carbon, oxygen, nitrogen, and zirconium. Optical analysis demonstrated that increasing ZrO2/(g-C3N4/CNT) content reduced the direct and indirect band gaps from 5.41 eV to 5.25 eV and from 5.18 eV to 4.92 eV, respectively. In addition, the single-oscillator energy (E0) and dispersion energy (Ed) increased, while the static refractive index (n0) decreased. Improvements were also observed in linear optical susceptibility (χ(1)) and third-order nonlinear optical susceptibility (χ(3)), enhancing the polarizability of the polymer molecules. These results indicate that PVA films doped with ZrO2/(g-C3N4/CNT) hold promise for optoelectronic applications due to their enhanced optical properties.
期刊介绍:
Polymer Testing focuses on the testing, analysis and characterization of polymer materials, including both synthetic and natural or biobased polymers. Novel testing methods and the testing of novel polymeric materials in bulk, solution and dispersion is covered. In addition, we welcome the submission of the testing of polymeric materials for a wide range of applications and industrial products as well as nanoscale characterization.
The scope includes but is not limited to the following main topics:
Novel testing methods and Chemical analysis
• mechanical, thermal, electrical, chemical, imaging, spectroscopy, scattering and rheology
Physical properties and behaviour of novel polymer systems
• nanoscale properties, morphology, transport properties
Degradation and recycling of polymeric materials when combined with novel testing or characterization methods
• degradation, biodegradation, ageing and fire retardancy
Modelling and Simulation work will be only considered when it is linked to new or previously published experimental results.