Synthesis, structural and electrical properties of PVA/TiO2 nanocomposite films with different TiO2 phases prepared by sol–gel technique

El‐Desoky, M. M.; Morad, Ibrahim; Wasfy, M. H.; Mansour, Ahmed

doi:10.1007/s10854-020-04313-7

Cited by 72 publications

(30 citation statements)

References 33 publications

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“…These results are in in good agreement with the researcher investigation [24] .which was confirmed by the JCPDS card No. 01-1292.…”

Section: X-ray Diffraction (Xrd)supporting

confidence: 92%

Preparation of PVA/TiO2 Nanocomposite Films with Various TiO2 Phases by Sol–Gel Technique

2022

djps

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The titanium oxide (TiO2) nanoparticles were prepared using the sol-gel technique. The calcination temperature (650, 850) ∁ ° has produced the different TiO2 structures (anatase and rutile), and the effect of the calcination temperature of particles was studied. (TiO2) on the structural properties of the prepared nanomaterial. Furthermore, at room-temperature casting process was used to create a PVA/TiO2 nanocomposite with different TiO2 phases. showed the results of X-ray diffraction (XRD) that a qualitative tetragonal crystal structure (antase, rutile) and scanning electron microscopy FE-SEM used to confirm the microstructure of TiO2 nanoparticles and the effect of each of the calcinations (650, 850) and weight percentages (0.2, 0.4, 0.6, 0.8, 1 wt%) from titanium dioxide nanoparticles on electrical properties of the prepared polymeric (PVA) films. The A. C. conductivity, dielectric constant, and the influence of frequency on the value of A. C. conductivity have been investigated. The results of the electrical properties of alternate current have shown that the dielectric constant decreases with increasing the frequency of the applied field and that alternative conductivity and dielectric constantincrease by increasing the concentration of the nanoparticle.

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“…These results are in in good agreement with the researcher investigation [24] .which was confirmed by the JCPDS card No. 01-1292.…”

Section: X-ray Diffraction (Xrd)supporting

confidence: 92%

Preparation of PVA/TiO2 Nanocomposite Films with Various TiO2 Phases by Sol–Gel Technique

2022

djps

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“…The optical phonon frequency ( o) and Debye temperature D could be estimated from FTIR spectra utilizing the reported absorption band [25], which owning to bending and stretching Fe-O vibrations bonds. by utilizing the equation…”

Section: Fourier Transform Infrared (Ftir) Spectramentioning

confidence: 99%

Influence of BaO Doping on the Structural, Ac Conductivity, and Dielectric Properties of BiFeO3 Multiferroic Nanoparticles

Salah

Morad

Ali

et al. 2021

J Inorg Organomet Polym

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“…The appearance of the absorption peaks of −OH was mainly attributed to the Ti–OH vibrations from the [Ti(OH) h (H 2 O) 6– h ] 4– h monomer, which was the hydrolysis production of the TiCl 4 precursor and acted as a basic unit that composes TiO 2 colloid in water. , In addition, water molecules absorbed by TiO 2 coating on the surface also contributed to the intensity of −OH vibrations . On the other hand, the absorption band at 996–700 cm –1 indicated the existence of Ti–O bonds on the membrane surface. − Based on the existence of −OH and Ti–O vibrations in the IR spectrum, it can be concluded that with the aid of the PFSS, TiO 2 was successfully loaded onto the PTFE membrane. Comparatively, the PTFE@PFS@TiO 2 membrane which was prepared using PFS as a molecular bridge (PFS, 1 H ,1 H ,2 H ,2 H -perfluorohexyltriethoxysilane, which is the same as PFSS, except for sulfonyl amide group) did not show the typical bands of −OH ascribed to Ti–OH; instead, the bands of Si–O–Si still remained, indicating no TiO 2 uploading.…”

Section: Resultsmentioning

confidence: 99%

Robust and Scalable In Vitro Surface Mineralization of Inert Polymers with a Rationally Designed Molecular Bridge

Zhang

Wang

Xue

et al. 2023

ACS Appl. Mater. Interfaces

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The artificial integration of inorganic materials onto polymers to create the analogues of natural biocomposites is an attractive field in materials science. However, due to significant diversity in the interfacial properties of two kinds of materials, advanced synthesis methods are quite complicated and the resultant materials are always vulnerable to external environments, which limits their application scenarios and makes them unsuitable for scalable production. Herein, we report a simple and universal approach to achieve robust and scalable surface mineralization of polymers using a rationally designed triple functional molecular bridge of fluorosilane, 3-[(perfluorohexyl sulfonyl) amino] propyltriethoxy silane (PFSS). In a twostep solution deposition, the fluoroalkyl and siloxane of the PFSS take charge of its adhesion and immobilization onto polymers by hydrophobic interaction and wrapping-like chemical cross-linking, and then the assembly and growth of inorganic nanoclusters for integration are achieved by strong chemical coordination of PFSS sulfonamide. The versatile mineralization of inorganic oxides (e.g., TiO 2 , SiO 2 , and Fe 2 O 3 ) onto chemically inert polymer surfaces was realized very well. The resultant mineralized materials exhibit robust and multiple functionalities for hostile applications, such as hydrophilic membranes for removing oils in strong acidic and alkaline wastewaters, fabrics with advanced anti-bacteria for healthy wearing, and plates with strong mechanical performance for better use. Experimental results and theoretical calculations confirmed the homogenous distribution of the PFSS onto polymers via cross-linking for robust coordination with inorganic oxides. These results demonstrate a skillful enlightenment in the design of high-performance mineralized polymer materials used as membranes, fabrics, and medical devices.

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Synthesis, structural and electrical properties of PVA/TiO2 nanocomposite films with different TiO2 phases prepared by sol–gel technique

Cited by 72 publications

References 33 publications

Preparation of PVA/TiO2 Nanocomposite Films with Various TiO2 Phases by Sol–Gel Technique

Preparation of PVA/TiO2 Nanocomposite Films with Various TiO2 Phases by Sol–Gel Technique

Influence of BaO Doping on the Structural, Ac Conductivity, and Dielectric Properties of BiFeO3 Multiferroic Nanoparticles

Robust and Scalable In Vitro Surface Mineralization of Inert Polymers with a Rationally Designed Molecular Bridge

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