scholarly journals Sol‐Gel Materials Used in Phosphoproteomics and Glycoproteomics Applications

2017 ◽  
Author(s):  
Hacı Mehmet Kayili ◽  
Mehmet Atakay ◽  
Bekir Salih
Keyword(s):  
Sol Gel ◽  
Materials Used

Fabrication and Characterization of Sol-Gel Derived PZT/WO3 Ceramics

2008 ◽  
Vol 55-57 ◽  
pp. 369-372 ◽  
Author(s):  
T. Sreesattabud ◽  
Anucha Watcharapasorn ◽  
Sukanda Jiansirisomboon
Keyword(s):  
Lead Zirconate Titanate ◽  
Sol Gel ◽  
Rhombohedral Phase ◽  
Lead Zirconate ◽  
X Ray Diffraction ◽  
Calcination Process ◽  
Materials Used ◽  
Phase Characterization ◽  
Gel Processing

Lead zirconate titanate/tungsten oxide (PZT/WO3) ceramics were prepared from the powders synthesized by a modified triol sol-gel processing method. In this study, the starting materials used for synthesis of PZT-sol were zirconium (IV) propoxide, titanium (IV) isopropxide, lead (II) acetate trihydrate and 1,1,1,- tris (hydroxymethyl) ethane. To prepare PZT/xWO3 powders (where x = 0, 0.5, 1 and 3 wt%), nano-sized WO3 was ultrasonically dispersed and mixed with the PZT sol, dried and calcined at 600°C for 4 h. X-ray diffraction results indicated that fully crystallized powders were obtained. Phase characterization suggested that at high WO3 concentration, the reaction between PZT and WO3 occurred during the calcination process. To prepare PZT/xWO3 ceramics, the powders were pressed and sintered at 1100°C for 6 h. Phase characterization by XRD indicated that the content of WO3 significantly affected tetragonal-to-rhombohedral phase transition. Microstructure of thermally etched samples showed that increasing the content of WO3 decreased grain size of the ceramics.

Investigation of PLA-PEG-45S5 Bioactive Glass Composite Enhancement on Bioactivity

2020 ◽  
Vol 833 ◽  
pp. 214-219
Author(s):  
Nik Syahirah Aliaa Nik Sharifulden ◽  
Siti Noor Fazliah Mohd Noor ◽  
Siti Fatimah Samsurrijal ◽  
Siti Nur Liyana Ramlee ◽  
Nur Syazana Azizan
Keyword(s):  
Thermal Analysis ◽  
Bioactive Glass ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Degradation Study ◽  
Significant Difference ◽  
Biomaterial Science ◽  
Materials Used ◽  
Hdf Cells

Bioactivity is an important aspect in biomaterial science ensuring materials used are safe for clinical application. The study describes fabrication of composites containing polylactic acid (PLA) – polyethylene glycol (PEG) with incorporation of sol-gel derived 45S5 bioactive glass (BG). Thermal analysis via Differential Thermal Analysis shows a favorable point over degree of crystallization that influence cells attachment, although non-significant difference in values indicates BG has homogenously dispersed. This correlates to X-ray diffraction analysis where non-significant difference is seen in intensities of the diffraction peaks, which confirms low impact of BG brittleness properties over the fabricated composite. Composites’ pH and degradation study in Simulated Body Fluid shows a steady increment profile over time and lower degradation rate for the composite after incorporation of BG. In vitro cell proliferation study also showed that HDF cells seeded on composite film of P/BG2.5 exhibit highest cell viability with steady increment of proliferation throughout the observation period.

scholarly journals Growth of Tin Oxide Thin Film by Aluminum and Fluorine Doping Using Spin Coating Sol-Gel Techniques

2019 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Susilawati Susilawati ◽  
Aris Doyan ◽  
Lalu Muliyadi ◽  
Syamsul Hakim
Keyword(s):  
Thin Film ◽  
Thin Layer ◽  
Tin Oxide ◽  
Spin Coating ◽  
Sol Gel ◽  
Spin Coating Technique ◽  
Oxide Thin Film ◽  
Coating Technique ◽  
Materials Used ◽  
Film Making

Abstract: The growth of tin oxide thin film by Aluminum doping and Fluorine has been carried out with the sol-gel spin coating technique. The growth aims to determine the quality of the thin layer formed based on variations in doping aluminum and fluorine. The basic ingredients used were SnCl2.2H2O, while the doping materials used were Al (Aluminium) and F (Fluorine) with variations in dopant concentrations (0, 5, 10, 15, 20 and 25)%. The growth of a thin layer using measured glass (10x10x 3) mm as a substrate. The growth of thin films includes substrate preparation, sol-gel making, thin film making, and heating processes. The growth of thin layer was dripped on a glass substrate with sol-gel spin coating technique at 1 M sol concentration and treated with maturation for 24 hours. The next step is making a thin layer using a spin coater at a speed of 2000 rpm for 3 minutes. After that, the substrate is heated in an oven at 100°C for 60 minutes. The results showed that the transparency level of the tin oxide layer increases with increasing amounts of doping Aluminum and fluorine. Key words: Aluminum, Fluorine, Sol-gel, Spin Coating, Thin Film, Tin Oxide

scholarly journals DEVELOPMENT OF POLYMERIC COMPOSITE MATERIALS BASED ON THERMOPLASTIC ELASTOMERS

2016 ◽  
Vol 1 (12) ◽  
pp. 195-199
Author(s):  
Прут ◽  
Eduard Prut ◽  
Черкашина ◽  
Natalya Cherkashina ◽  
Ястребинская ◽  
...  
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Filler Content ◽  
Sol Gel ◽  
Polymeric Composite ◽  
Thermoplastic Elastomers ◽  
Polymer Composite Materials ◽  
Dynamic Vulcanization ◽  
The Matrix ◽  
Materials Used

This paper presents data on the development of polymer composite materials based on thermoplastic elastomers. As starting materials for the synthesis of the matrix components were selected as follows: isotactic polypropylene and ternary ethylene-propylene-diene elastomer (EPDM). Diene component in EPDM are ethylidene norbornene composition in an amount of 4-5%. Dynamic vulcanization was carried out using the elastomer element sulfur. The filler polymer composite materials used silica gel with dimethyl polysiloxane. Synthesis was carried out by filling the sol-gel technology. The filler content in the composite varied from 10 to 80% by weight. Mixing of filler and the matrix was performed in a laboratory twin-rotor mixer, type "Brabender". It is found that the maximum possible filler content of the matrix used was 80%. With the introduction of more filler mixing of the components it has been difficult. When the filler content from 10 to 70% of parameters such as tensile strength, flexural strength and modulus of longitudinal elasticity increasing and administered at higher filler and 80 wt%. markedly reduced. Thus, it can be concluded that the content of filler in the composite is 70%. Further research should be directed to the evaluation of the radiation resistance of the developed composite materials.

PEMBUATAN SEL SURYA TERSENSITASI PEWARNA (SSTP) LAPISAN TiO2/GRAFIT DARI EKSTRAK KELOPAK BUNGA ROSELLA, BERAS KETAN HITAM, DAN UBI JALAR UNGU

2018 ◽  
Vol 2 (2) ◽  
pp. 6-10
Author(s):  
Nurhidayah Nurhidayah ◽  
Suwarni Suwarni ◽  
Sri Rahayu Alfitri Usna ◽  
Muhammad Ficky Afrianto ◽  
Faizar Farid
Keyword(s):  
Solar Cells ◽  
Sweet Potato ◽  
Spin Coating ◽  
Ipomoea Batatas ◽  
Sol Gel ◽  
Dye Sensitized Solar Cells ◽  
Glutinous Rice ◽  
Composition Materials ◽  
Purple Sweet Potato ◽  
Materials Used

Fabrication of Dye-Sensitized Solar Cells (DSSC) using working electrodes composed of a mixture of TiO2 and 14% of graphite, which then denoted as TiO2:C14%, has been done. The TiO2:C14% colloid was deposited on a conductive Fluorine Doped Tin Oxide (FTO) glass substrate by using sol-gel-spin coating at the speed of 1500 rpm for 50 seconds. This thin layer was then immersed for 24 hours in different dye solutions extracted from Rosella petals (hibiscus sabdariffa), black glutinous rice (oryza sativa) and purple sweet potato (ipomoea batatas). Composition materials used to fabricate the solar cells were characterized by using x-ray diffraction (XRD) and scanning electron microscope (SEM). The power conversion efficiency (PCE) of the solar cells was measured by using a set of I-V characteristic circuit. The result showed that the highest PCE of 3 x 10-3 % was obtained from the cells based on dye extracted from rosella petals compared to those from black glutinous rice and purple sweet potato.   Keywords: DSSC, dye, rosella, TiO2, spin coating, XRD, efficiency.

Preparation and Characterization of Transparent Electrodes Based on CNT-s Doped Metal Oxides

2011 ◽  
Vol 324 ◽  
pp. 133-136
Author(s):  
Madis Paalo ◽  
Tanel Tätte ◽  
Eugene Shulga ◽  
Madis Lobjakas ◽  
Aare Floren ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Electrode Materials ◽  
Sol Gel ◽  
Physical Stability ◽  
Chemical Vapor ◽  
Transparent Electrode ◽  
Electrical And Optical Properties ◽  
Materials Used

In the present work, it is shown that carbon nanotube-doped transition metal oxides are potential candidates for use as ceramic transparent electrode materials. Used carbon nanotubes (CNT-s) are synthesized by using chemical vapor deposition (CVD) method. Electrodes in shape of fibers are obtained via inexpensive and low temperature sol-gel method. Due to extraordinary electrical and optical properties of CNT-s and good chemical and physical stability of metal oxide ceramics, resulting composites could be an interesting subject for industry.

scholarly journals Effect of ZnO on Properties of Gels for Heritage Objects Conservation

Gels ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 251
Author(s):  
Oana-Cătălina Mocioiu ◽  
Irina Atkinson ◽  
Ana-Maria Mocioiu ◽  
Simona Neagu ◽  
Robert Ruginescu ◽  
...  
Keyword(s):  
Raw Materials ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Salt Crystal ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Transitional Metals ◽  
Materials Used ◽  
Growth Of Bacteria ◽  
Scanning Electron

One of the current research objectives is the development of new films for the conservation of glass heritage objects. The value of historical glass objects is given by the technology and raw materials used in production as well as their transparency and color. Their colors are correlated with oxide composition rich in transitional metals, which decrease resistance of corrosive agents from the atmosphere. In this paper, SiO2-ZnO gels have been designed to protect historical glass objects. The sol–gel method used to obtain gels is a powerful tool for functionalizing different materials. An important functionalization is the antibacterial activity. By applying a gel, the coated material is able to decrease the growth of bacteria. After deposition, some gels must be strengthened by heat treatment. The effect of ZnO content (10 mol% and 20 mol%) on the properties of the studied gels was investigated by Differential scanning calorimetry (DSC), Fourier transform infrared (FTIR), X-ray diffraction (XRD), Scanning electron microscopy (SEM), and antibacterial tests. Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 25923, and the halotolerant bacterium, Virgibacillus halodenitrificans, isolated from a salt crystal from Unirea mine, Slănic Prahova, Romania, were used. The gel Gel 2 (SiO2-ZnO (20 mol%)) showed the best properties.

Physicochemical Properties of Advanced Nanostructured Materials for Dental Microimplant Coatings

2017 ◽  
Vol 68 (9) ◽  
pp. 2052-2054
Author(s):  
Georgeta Zegan ◽  
Daniela Anistoroaei ◽  
Loredana Golovcencu ◽  
Eduard Radu Cernei ◽  
Cristina Gena Dascalu ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Nanostructured Materials ◽  
Antimicrobial Agents ◽  
Sol Gel ◽  
Antimicrobial Effect ◽  
Oral Diseases ◽  
Morphological Studies ◽  
Composition Structure ◽  
Materials Used ◽  
Implant Coatings

An important aspect of orthodontic microimplants is represented by biocompatibility and avoidance of infection development at living tissue surrounding it. Therefore, nanotechnology has the ability to improve this issue by coating microimplants with metal oxides type nanomaterials possessing antimicrobial effect. Some features of advanced nanostructured materials used as implant coatings, such as composition, structure, specific surface area, porosity, shape and size are factors that make them suitable as antimicrobial agents. The present work deals with the structural and morphological studies of ZnO and TiO2 nanoparticles used to combat oral diseases. Coating microimplants with nanosized titanium oxide (TiO2) and zinc oxide (ZnO) may improve conditions for osseointegration in accordance with preventing oral infection. These metal oxides nanopowders were synthesized using sol-gel method. Structural and morphological investigation were carried out by XRD and FTIR spectra, SEM-EDX and TEM images respectively. XRD and FTIR analyses confirmed metal oxides crystallization and metal oxide bonds. SEM-EDX and TEM features confirmed elemental composition of these nanoparticles and their textural characteristics such as shape, size, porosity and agglomeration degree.

Spin Coated CuO with Different Additives (PEG) Value Thin Film: Physical, Structural, Optical and Electrical Characteristics of CuO/PEG

2020 ◽  
Vol 301 ◽  
pp. 43-51
Author(s):  
Rohanieza Abdul Rahman ◽  
Muhammad AlHadi Zulkefle ◽  
Nur Syaza Muhammad Kamar ◽  
Zulfakri Mohamad ◽  
Sukreen Hana Herman ◽  
...  
Keyword(s):  
Thin Film ◽  
Indium Tin Oxide ◽  
Sol Gel ◽  
Ultra Violet ◽  
Electrical Characteristics ◽  
X Ray Diffraction ◽  
Current Voltage ◽  
Coating Method ◽  
Materials Used ◽  
Change Material

This study presents an investigation on copper oxide (CuO) composited with polyethylene glycol (PEG) thin film. The main objective for this compositing thin film is to explore and determine the characteristic of the thin film when the value of PEG is varied. In this study, PEG plays a role as phase change material (PCM), where this type of material has the capability to absorb and release heat based on its surrounding condition. Due to this characteristic, the amount of PEG is vary from 0.5, 1.0, 1.5 and 2.0 ml to confirm its influence towards CuO thin film. As for comparison, CuO thin film without PEG is also fabricated. Both of the materials used were prepared using sol-gel route and deposited onto indium tin oxide (ITO) substrate using spin coating method. The influences of the PEG values on CuO thin film were investigated using field emission scanning electron microscope (FESEM), x-ray diffraction (XRD), ultra-violet visible microscope (UV-Vis), and current-voltage (IV) measurement. Based on the investigation conducted, the characteristics of CuO thin film produced in this study are affected with the different value of PEG.

scholarly journals Impact of Overlapping Fe/TiO2Prepared by Sol-Gel and Dip-Coating Process on CO2Reduction

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Akira Nishimura ◽  
Xuyan Zhao ◽  
Takuya Hayakawa ◽  
Noriaki Ishida ◽  
Masafumi Hirota ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Uv Light ◽  
Sol Gel ◽  
Base Material ◽  
Visible Spectrum ◽  
Dip Coating ◽  
Coating Process ◽  
Illumination Condition ◽  
Base Materials ◽  
Materials Used

Fe-doped TiO2(Fe/TiO2) film photocatalyst was prepared by sol-gel and dip-coating process to extend its photoresponsivity to the visible spectrum. To promote the CO2reduction performance with the photocatalyst, some types of base materials used for coating Fe/TiO2, which were netlike glass fiber and Cu disc, were investigated. The characterization of prepared Fe/TiO2film coated on netlike glass fiber and Cu disc was analyzed by SEM and EPMA. In addition, the CO2reduction performance of Fe/TiO2film coated on netlike glass disc, Cu disc, and their overlap was tested under a Xe lamp with or without ultraviolet (UV) light, respectively. The results show that the concentration of produced CO increases by Fe doping irrespective of base material used under the illumination condition with UV light as well as that without UV light. Since the electron transfer between two overlapped photocatalysts is promoted, the peak concentration of CO for the Fe/TiO2double overlapping is approximately 1.5 times as large as the Fe/TiO2single overlapping under the illumination condition with UV light, while the promotion ratio is approximately 1.1 times under that without UV light.

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