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89 articles for “sol–gel”
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A Comparative Study of Zinc Oxide Nano Particles Synthesized by Hydrothermal, Sol-gel and Thermal Decomposition
Abstract: In the proposed work, Zinc oxide nano particles (ZnO NP's) are synthesized using three different methods: Hydrothermal, Sol-gel and Thermal decomposition. The samples are characterized using X- ray diffraction (XRD), UV visible spectroscopy (UV-Vis), Fourier Transform Infrared Spectroscopy (FT-IR) and scanning electron microscopy (SEM). The XRD pattern exhibit single-phase polycrystalline nature of all the samples exhibiting the most intense peak at (101). The diffraction peaks are located at 31.80, 34.46, …
Published in Journal of Polymer & Composites · Vol. 11, Issue 7, 2023 · pp. 39–45 Read article
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Metal corrosion prevention control with uses of sol-gel coatings
Abstract: The potential for sol-gel generated films to replace methods for pre-treating metal surfaces with chromate is very high. Metallic and organic paint can be painted on with good adherence thanks to inorganic sol-gel generated coatings. Their significant crack-forming propensity prevents them from offering appropriate corrosion protection. A thicker, more flexible, functionalized film is produced with improved compatibility to various organic top coatings when an organic component is added to an …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 9, Issue 2, 2022 · pp. 22–26 Read article
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Effect of Sol-Gel Coating on Fire Performance and Optical Properties of Wood Panels
Abstract: Investigates the impact of sol-gel coating on the fire performance and optical properties of wood panels.SEM, EDX, and infrared spectroscopy with the Fourier transform were used to characterize the sol-gel coating, which was put on to the wood panels using a dip-coating technique. The fire performance of the coated and uncoated wood panels was evaluated by measuring the ignition time, flame spread rate, and total heat release rate. The optical …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 10, Issue 1, 2023 · pp. 20–24 Read article
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Comparative Study of Structural and Optical Properties of Bismuth Ferrite Nanoparticles for Photovoltaic Applications Synthesized via Different Sol-Gel Methods
Abstract: Pure multiferroic bismuth ferrite (BiFeO3) nanoparticles were successfully synthesized using an energy-efficient, low-temperature sol-gel method, comparing two distinct approaches: auto-combustion and non-auto-combustion. To ensure phase stability, the precursor solution's pH was strictly maintained between 1 and 2 using ammonia solution (NH4OH), while ethylene glycol (C2H6O2) was employed as a chelating agent for the Fe3+ and Bi3+ cations. All samples underwent a final annealing process at 500 °C to promote crystallization. …
Published in Journal of Materials & Metallurgical Engineering · Vol. 16, Issue 1, 2026 · pp. 83–94 Read article
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Electrooxidation of Methylene Blue over nanoparticle coated DSA synthesized by sol-gel method
Abstract: The current study uses the sol-gel approach to synthesize a new Dimensionally Stable Anode (DSA) covered with nanoparticles. The objective is to enhance the electrocatalytic activity and overall performance of the anodes in treating synthetic industrial wastewater containing reactive dyes. CuO and TiO2 nanoparticles are coated using a thermal decomposition technique on a titanium electrode. The DSA surface gains more surface area and better catalytic capabilities when nanoparticles are coated …
Published in Emerging Trends in Chemical Engineering · Vol. 11, Issue 2, 2024 · pp. 34–43 Read article
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Hot Corrosion Behaviour of Sol-Gel Alumina Coated IN625 Alloy in Alkali Metal Chlorides and Sulphates Salt Deposit Systems
Abstract: Sol-gel derived alumina coating was applied on Inconel 625 alloy using dip coating technique and their hot corrosion studies were carried out in LiCl-NaCl and Na2SO4-K2SO4 salt deposits system at 650 °C and 850 °C respectively. Oxidation kinetics measurement indicated the occurrence of an order of magnitude lower oxidation rate and around 15–20 % higher activation energy for the coated substrate as compared to uncoated one. EDS analysis of the …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 3, Issue 1, 2016 · pp. 9–16 Read article
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Influence of Gd Doping in Structural, Morphological and Optical Properties of Zno Nanostructures Synthesised Via Sol-Gel Processes
Abstract: In this study, nanocrystalline Zn1-xGdx (x=0.0 and 0.03) samples were synthesised via the Sol-gel combustion process. An array of analytical techniques was employed to examine the prepared samples to determine their different physical features. For both pristine and Gd-doped samples, the crystal symmetry is hexagonal with the P63mc space group which is verified via the Rietveld refinement analysis of X-ray diffraction (XRD) data. The atoms' bond length Zn-O and bond …
Published in Journal of Polymer & Composites · Vol. 12, Issue 4, 2024 · pp. 219–225 Read article
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A Sol-Gel Approach for the Fabrication of Zinc Oxide Nanoparticles and Their Nanocomposite with Urea Formaldehyde (UF)
Abstract: In the performed work, zinc oxide nanoparticles were synthesized via the sol-gel method using zinc sulphate as the precursor material. Urea-formaldehyde (UF) resin was employed as a polymer matrix to encapsulate the produced ZnO through an acid-catalyzed polymerization process. This encapsulation aimed to improve the dispersion stability and surface reactivity of ZnO within the polymeric medium. The synthesized materials were subjected to comprehensive characterization using Fourier Transform Infrared Spectroscopy (FT-IR), …
Published in International Journal of Crystalline Materials · Vol. 2, Issue 2, 2025 · pp. 21–27 Read article
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THE THICKNESS EFFECT ON TiO 2 THIN FILMS FABRICATED BY USING SOL- GEL DIP COATING METHOD
Abstract: Titanium dioxide films were prepared by sol-gel dip-coating technique onto glass substrates at room temperature. The study focuses on the structural pattern of TiO 2 films which were dominated by the parameters such as the film thickness, pH, annealing temperature and number of dipping layers. At first the dipping speed is optimized with the refractive index of the film along with the number of dipping layers. Then the film deposited …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 1–10 Read article
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Analysis of Thermo-Mechanical Properties in Cement Mortar Using Synthesized Silicate Microencapsulation of Phase Change Materials by Sol-Gel Process
Abstract: This investigation delves into improving building thermal comfort using microencapsulated phase change materials (PCM@SiO2) in cement mortar. The encapsulation process, achieved via a sol-gel method, envelops PCM in a silicate shell Differential Scanning Calorimetry (DSC) and Fourier-Transform Infrared Spectroscopy (FTIR) were used to confirm the thermal properties and integrity of encapsulated PCM, which showed an encapsulation efficiency of 92.7% and a thermal storage capacity of 99.7%. The study involved the …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 152–160 Read article
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High-strength Indian Kaolin Development by Adding Vanadium Pentoxide (V2O5) by Sol-gel Method
Abstract: The development of high strength in Indian kaolinite has been studied in the presence of vanadium pentoxide. It is observed that the strength of Indian kaolinite is increased with addition of V2O5 by sol-gel techniques and characterized by Vickers hardness, X-ray diffraction and scanning electronmicroscopy studies. The kaolinite was compacted with different proportions of V2O5 additives and sintered at four different high temperatures. It was observed that V2O5 showed a …
Published in Journal of Catalyst & Catalysis · Vol. 10, Issue 1, 2023 · pp. 28–32 Read article
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Substitution of La3+ in Cu0.5Co0.5 LaxFe2-x O4 (x=0.02, 0.06) spinel ferrites improves the structural and dielectric Properties
Abstract: Nanosized Spinel ferrites with composition Cu0.5Co0.5 LaxFe2-x O4 (x=0.2, 0.6) synthesized by Sol-Gel auto Combustion method. The prepared sample was calcinated at 8000c for 4 hours. The substitution of La3+ effects the structural parameters, which is characterized by X-ray diffraction (XRD). The X-rd analysis shows that the crystallite size is 34.609 nm for 0.02 and 38.994 nm for 0.06 was calculated by using Debye-Scherrer’s formula. dislocation density shows at value …
Published in Journal of Materials & Metallurgical Engineering · Vol. 15, Issue 3, 2025 · pp. 45–48 Read article
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Composite Gel-Fibers and Solid-State-Processed Tapes Based on Disentangled Ultra-High Molecular Weight Polyethylene and Electrically Conductive Carbon Black: a Comparative Study
Abstract: In this study, oriented nanocomposite gel-spun fibers and solid-state-processed tapes were manufactured and analyzed. The fibers and tapes were produced using a specific type of nascent disentangled ultra-high molecular weight polyethylene (UHMWPE) reactor powder. As the filler, commercially available electrically conductive carbon black (CB) was used. The ultra-high filler content values up to 75 wt.% were achieved for the UHMWPE/CB gel-spun fibers, while the degree of filling was limited (up …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 151–165 Read article
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An Overview of Surface Coating Methodologies and Their Use in Technical Materials
Abstract: To safeguard the product or structure against chemical harm, a variety of procedures and materials can be applied in coating applications today. Nowadays, coatings are used extensively in manufacturing all over the world to increase efficiency and reduce expenses two factors that are essential to preserving the sector's profitability. Coated materials have greater strength compared to uncoated materials. A variety of materials, including bio glass, polymers, ceramics, strong and hard …
Published in Journal of Polymer & Composites · Vol. 12, Issue 6, 2024 · pp. 19–35 Read article
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A Study on the Effect of Ionic Conductivity on Addition of Salt for Polymer Nanocomposite Gel Electrolyte for Solar Cell Applications
Abstract: AbstractDye sensitized solar cells (DSSC) have attracted greater attention in the recent years because of their relatively high energy conversion efficiency and low cost. In the DSSCs, the electrolytes play a vital role in the determination of the efficiency and long term stability. In this investigation, we report on the synthesis, characterization and conductivity study of polymer nanocomposite gel electrolyte. Cadmium oxide nanoparticles were added into polymer blend of poly …
Published in Journal of Polymer & Composites · Vol. 3, Issue 3, 2015 · pp. 8–15 Read article
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Structure–Optical Property Correlation of Co-Doped TiO₂ and ZnO Nanofillers for Advanced Functional Composite Applications
Abstract: This study investigates the enhancement of the structural and optical properties of titanium dioxide (TiO₂) and zinc oxide (ZnO) nanoparticles through cobalt (Co) doping. Pristine TiO₂ and ZnO are widely studied metal oxides; however, their large band gaps and limited visible-light absorption restrict their performance in optoelectronic, photocatalytic, and environmental applications. Co doping is employed as an effective strategy to overcome these limitations by inducing band-gap narrowing, creating defect-related electronic …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1374–1394 Read article
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Study of Nano Germanium and Composited Forms
Abstract: This article has reviewed refinement synergism to same as earlier bulk semi-conduction. Colloidal 5 nm suspension from photolysis and pyrolysis for aerogel of II-VI quantum dots has subsidized extinction contour of semiconductor nano-crystal. Thereby transitional has accused between 0.6 to 5 eV to access from size-dependent optical and electrical effect instead of precipitation technique. Structure-oriented electronic and optical property has relevance to nano-semiconductor preparation method synergistic to earlier bulk. Nano-crystals …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 8, Issue 2, 2021 · pp. 8–15 Read article
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Parametric Study of a Solar Heat Driven Silica Gel–Water Paired Adsorption Chiller
Abstract: Heat driven sorption based cooling systems are gaining interest as they are environmentally friendly and have the potential to save precious fossil fuel resources. Low grade thermal sources like solar or waste heat can run a silica gel-water paired adsorption chiller to generate chilled water below 10°C. However, the performance of the adsorption chillers is poor when compared to vapour absorption or vapour compression based cooling systems. An effort has …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 6, Issue 2, 2015 · pp. 19–29 Read article
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Aluminum based types of hydrophobic coatings for Engineering Materials: A Review
Abstract: Today's coating applications allow for the employment of a wide range of techniques and substances to safeguard products and structures from chemical and chemical harm. Coatings are now widely utilized in manufacturing across the globe to boost productivity and cut costs, both of which are crucial for maintaining the industry's profitability. Materials with coatings are stronger than those without coatings. Strong and hard metals, ceramics, bioglass, polymers, and plastic materials …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 113–133 Read article
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6000 inhibitors for aluminum and its alloys
Abstract: 6XXX series of aluminum alloys suffer from severe corrosion in acidic saline medium. These alloys are used for architectural, automobiles, aviation, household appliances, containers and electronic devices. Organic-inorganic sol-gel hybrid coatings are synthesized on these alloys. Rear earth inhibitors consider lanthanum inhibitors to be better than cerium inhibitors. These contexts discuss epoxy-silica-zirconia by sol-gel coatings, paddy residue, colchicines, rare earth coatings and ionic liquid for composites
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 6, Issue 2, 2019 · pp. 18–25 Read article