Influence of silane content on the optical properties of sol gel derived spin coated silica thin films

Satvekar, Rajshri K.; Phadatare, M.R.; Karande, Vidya A.; Patil, RB; Tiwale, B.M.; Pawar, S.H.

doi:10.14419/ijbas.v1i4.292

Cited by 10 publications

(5 citation statements)

References 11 publications

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“…The silica-based xerogel was characterized by XRD analysis, as reported in Figure 2 . The dried material after two hours at 70 °C showed a broadened peak in the 2θ range of 8–15°; the feature corresponds to the amorphous silica matrix [ 21 ]. The results indicated that no crystalline phase was formed during the initial drying of thin films prepared with TEOS at low temperature.…”

Section: Resultsmentioning

confidence: 99%

Water Decontamination from Cr(VI) by Transparent Silica Xerogel Monolith

Zannotti

Rossi

Minicucci

et al. 2023

IJMS

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Cr(VI) is highly soluble and mobile in water solution and extremely toxic. In order to obtain a specific material with adsorption properties towards Cr(VI), and that can be used in environmental remediation of water contaminated with Cr(VI), one-step sol-gel technique, at low temperature (50 °C), has been optimized to prepare transparent silica-based xerogel monolith by using tetraethyl orthosilicate as precursor. The obtained xerogel, with disk shape, was fully characterized by Raman, BET, FE-SEM and XRD analysis. The results indicated that the material showed silica amorphous phase and high porosity. The study of the adsorption properties towards different concentrations of Cr(VI), in the form of HCrO4− in acidic condition, showed prominent results. The absorption kinetics were evaluated by studying different models, the final result showing that the absorption of Cr(VI) occurred through intra-particle diffusion process, following two steps, and that the absorption equilibrium is regulated by Freundlich isotherm model. The material can be restored by reducing the hazardous Cr(VI) to Cr(III), a less toxic form of chromium, by 1,5-diphenylcarbazide, and with successive treatment in acidic water.

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Section: Resultsmentioning

confidence: 99%

Water Decontamination from Cr(VI) by Transparent Silica Xerogel Monolith

Zannotti

Rossi

Minicucci

et al. 2023

IJMS

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“…Figure 2 shows the infrared spectra of the different MMA-SiO2 hybrids. It can be observed absorption band of Si-O-Si at 1070 cm -1 was due to the formation of the silica structure [24]. The shift in the C=O band, 1734 cm -1 , is due to the presence of hydrogen bonds in the system.…”

Section: Chemical and Morphological Characterizationmentioning

confidence: 92%

Effect of SiO₂ concentration on the mechanical and anticorrosive properties of the hybrid PMMA/SiO₂ coating synthesized in situ by sol-gel process.

Reyes-Tesillo,

López-Campos,

Mojica-Gómez

et al. 2024

J. Phys.: Conf. Ser.

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Anti-corrosive evaluation of a hybrid polymethylmethacrylate (PMMA) with silica particles (SiO2) is presented, the hybrid (PMMA-SiO2) was synthetized in situ by sol-gel process. The SiO2 particles were embedded into to matrix PMMA at different concentrations. The hybrid structure of the coatings was characterized and observed with Fourier Transform Infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The deposition of the hybrid in aluminum 7075-T6 (Al7075) substrates was made with the blade coating technique, measuring wet and dry film thickness. For the preparation of the hybrid, PMMA was used without any type of curing, which allowed us to save resources. All tests were performed according to American Society for Testing and Materials (ASTM international) standards. The incorporation of SiO2 to concentrations significantly improved the mechanical and anti-corrosive results. PMMA-SiO2 coating, once deposited on the surface of Al7075 plates, has been tested inside a salt fog chamber (CNS) operated under accelerated conditions. They were improved up to 920 h its corrosion resistance. The abrasion tests had an increase of 50%, its hardness up to 4H and the wear index improved by 50% compared with the hybrids with minor SiO2 concentration, which shows that a higher concentration of SiO2 particles has a higher performance of the coating.

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“…Porous nanomaterials retain native conformation and reactivity of biomolecules. The greater optical transparency makes it valuable in the application of biosensor for medical diagnosis [38].…”

Section: Graphene Oxide (Go)mentioning

confidence: 99%

Emerging Trends in Medical Diagnosis: A Thrust on Nanotechnology

SH¹

2014

Med chem

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Nanotechnology is the manipulation of material on an atomic and molecular scale; by changing its physical, chemical and biological properties to produce novel materials, devices, and systems. Nanomaterials exhibit remarkable characteristics such as high surface to volume ratio, catalytic activity, and biocompatibility which make them suitable for various biomedical applications. Nanotechnology have prospective to improve the whole healthcare process for patient; starts from diagnosis to treatment and follow-up monitoring. Medical diagnosis based on nanotechnology provides two major advantages: rapid testing and early diagnosis. The potential contributions of nanotechnology in the medical diagnosis are extremely broad and improve traditional diagnostic tools and methods in the field of clinical diagnosis, imaging and electro-diagnosis. Emerging modalities such as biochip, microarray, nanobarcode, micro-electromechanical systems, lab on chip and nanobiosensor have revolutionized the field of medical diagnosis. Nanoscale materials and nano-enabled techniques are used for diagnosis of various diseases such as cardiovascular diseases, cancer, diabetes, infectious disease, musculoskeletal and neurodegenerative disease etc. Among all medical applications of nanotechnology, nanobiosensor especially enzyme nanobiosensor are sensitive, reliable, robust, reproducible and cost effective diagnostic tool to meet the requirements of healthcare.

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Influence of silane content on the optical properties of sol gel derived spin coated silica thin films

Cited by 10 publications

References 11 publications

Water Decontamination from Cr(VI) by Transparent Silica Xerogel Monolith

Water Decontamination from Cr(VI) by Transparent Silica Xerogel Monolith

Effect of SiO₂ concentration on the mechanical and anticorrosive properties of the hybrid PMMA/SiO₂ coating synthesized in situ by sol-gel process.

Emerging Trends in Medical Diagnosis: A Thrust on Nanotechnology

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Influence of silane content on the optical properties of sol gel derived spin coated silica thin films

Cited by 10 publications

References 11 publications

Water Decontamination from Cr(VI) by Transparent Silica Xerogel Monolith

Water Decontamination from Cr(VI) by Transparent Silica Xerogel Monolith

Effect of SiO2 concentration on the mechanical and anticorrosive properties of the hybrid PMMA/SiO2 coating synthesized in situ by sol-gel process.

Emerging Trends in Medical Diagnosis: A Thrust on Nanotechnology

Contact Info

Product

Resources

About

Effect of SiO₂ concentration on the mechanical and anticorrosive properties of the hybrid PMMA/SiO₂ coating synthesized in situ by sol-gel process.