scholarly journals Silver DopedTiO2Nanostructure Composite Photocatalyst Film Synthesized by Sol-Gel Spin and Dip Coating Technique on Glass

2008 ◽  
Vol 2008 ◽  
pp. 1-11 ◽  
Author(s):  
Mojtaba Nasr-Esfahani ◽  
Mohammad Hossein Habibi
Keyword(s):  
Methyl Orange ◽  
Anatase Phase ◽  
Sol Gel ◽  
Composite Films ◽  
Methyl Cellulose ◽  
Dip Coating ◽  
Silver Addition ◽  
Coating Technique ◽  
Xrd Diffraction ◽  
Dip Coating Technique

New composite films (P25SGF-MC-Ag, MPC500SGF-MC-Ag, and ANPSGF-MC-Ag) have been synthesized by a modified sol-gel method using different particle sizes ofTiO2powder and silver addition. NanostructureTiO2/Ag composite thin films were prepared by a sol-gel spin and dip coating technique. while, by introducing methyl cellulose (MC) porous,TiO2/Ag films were obtained after calcining at a temperature of 500°C. The as-preparedTiO2andTiO2/Ag films were characterized by X-ray diffractometry, and scanning electron microscopy to reveal the structural and morphological differences. In addition, the photocatalytic properties of these films were investigated by degrading methyl orange (MO) under UV irradiation. After 500°C calcination, the microstructure of MC-TiO2film without Ag addition exhibited a microstructure, while significant sintering effect was noticed with Ag additions and the films exhibited a porous microstructure. Nanostructure anatase-phaseTiO2can be observed with respect to the sharpening of XRD diffraction peaks. The photodegradation of porousTiO2deposited with5×10−4 mol Ag exhibited the best photocatalytic efficiency, where 69% methyl orange can be decomposed after UV exposure for 1 hour.

Growth of ZnO Nanorods by Template-Free Sol-Gel Dip-Coating Technique: Effect of Pre-Annealing Temperature

2019 ◽  
Vol 397 ◽  
pp. 111-117
Author(s):  
Djamal Eddine Guitoume ◽  
Fayssal Ynineb ◽  
Djelloul Mendil ◽  
Hichem Farh ◽  
Nadhir Attaf ◽  
...  
Keyword(s):  
Optical Properties ◽  
Heating Temperature ◽  
Sol Gel ◽  
Zno Nanorods ◽  
Visible Region ◽  
Dip Coating ◽  
Coating Technique ◽  
Xrd Diffraction ◽  
Different Temperatures ◽  
Dip Coating Technique

In this work, we studied the effect of pre-heating temperature on the structural and optical properties of ZnO nanorods grown by free template sol-gel dip-coating technique. The prepared films were pre-heated at different temperatures: 240, 260, 280 and 300 °C, then annealed at 500 °C for one hour. The structural properties of the prepared samples were investigated by X-ray diffraction (XRD) and the surface morphologies were studied by scanning electron microscope (SEM). The optical properties were studied by means of UV-Visible spectrophotometer. The XRD diffraction spectra show that all the prepared samples have a ZnO wurtzite structure with a preferential orientation along (002) axis. SEM micrographs revealed the formation of well-aligned ZnO nanorods for the sample preheated at 280 °C. The prepared ZnO nanorod structured thin films are highly transparent in the visible region with an average transmittance above 85 % in the 400–800 nm wavelength range.

scholarly journals High Refractive Index Silica-Titania Films Fabricated via the Sol–Gel Method and Dip-Coating Technique—Physical and Chemical Characterization

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7125
Author(s):  
Magdalena Zięba ◽  
Katarzyna Wojtasik ◽  
Cuma Tyszkiewicz ◽  
Ewa Gondek ◽  
Jacek Nizioł ◽  
...  
Keyword(s):  
Refractive Index ◽  
Sol Gel ◽  
Composite Films ◽  
Dip Coating ◽  
Root Mean Square Roughness ◽  
Soda Lime Glass ◽  
Gel Method ◽  
Sol Gel Method ◽  
Coating Technique ◽  
Dip Coating Technique

Crack-free binary SiOx:TiOy composite films with the refractive index of ~1.94 at wavelength 632.8 nm were fabricated on soda-lime glass substrates, using the sol–gel method and dip-coating technique. With the use of transmission spectrophotometry and Tauc method, the energy of the optical band gap of 3.6 eV and 4.0 eV were determined for indirect and direct optical allowed transitions, respectively. Using the reflectance spectrophotometry method, optical homogeneity of SiOx:TiOy composite films was confirmed. The complex refractive index determined by spectroscopic ellipsometry confirmed good transmission properties of the developed SiOx:TiOy films in the Vis-NIR spectral range. The surface morphology of the SiOx:TiOy films by atomic force microscopy (AFM) and scanning electron microscopy (SEM) methods demonstrated their high smoothness, with the root mean square roughness at the level of ~0.15 nm. Fourier-transform infrared (FTIR) spectroscopy and Raman spectroscopy were used to investigate the chemical properties of the SiOx:TiOy material. The developed binary composite films SiOx:TiOy demonstrate good waveguide properties, for which optical losses of 1.1 dB/cm and 2.7 dB/cm were determined, for fundamental TM0 and TE0 modes, respectively.

scholarly journals Development of Adhesive, Bioactive and Antibacterial Titania Sol-Gel Coating on Titanium Substrate by Dip-Coating Technique

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 243
Author(s):  
Diana Horkavcová ◽  
Quentin Doubet ◽  
Gisèle Laure Lecomte-Nana ◽  
Eva Jablonská ◽  
Aleš Helebrant
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Sol Gel ◽  
Titanium Substrate ◽  
Dip Coating ◽  
Coating Technique ◽  
Metal Implants ◽  
Excellent Adhesion ◽  
Titania Sol ◽  
Dip Coating Technique

The sol-gel method provides a wide variety of applications in the medical field. One of these applications is the formation of coatings on the metal implants. The coatings containing specific additive can enhance or improve the existing surface properties of the substrate. In this work, titania sol-gel coatings were doped with two forms of silver (AgNO3, Ag3PO4) and synthetic hydroxyapatite and applied on the titanium samples by dip-coating technique. After drying and slow firing, all coatings were characterized with scanning electron microscopy. Thin coatings were successfully prepared with excellent adhesion to the substrate (measured by ASTM D 3359-2), despite cracks. Coatings containing silver and hydroxyapatite demonstrated a 100% antibacterial effect against Escherichia coli after 24 h. The bioactivity of the coatings containing hydroxyapatite tested in modified simulated body fluid under static-dynamic conditions was confirmed by bone-like hydroxyapatite precipitation. To better understand the interaction of the coatings with simulated body fluid (SBF), changes of Ca2+ and (PO4)3− ions concentrations and pH values were studied.

Solar-Water-Splitting BiVO4 Thin-Film Photoanodes Prepared By Using a Sol-Gel Dip-Coating Technique

ChemPhotoChem ◽  
2017 ◽  
Vol 1 (6) ◽  
pp. 273-280 ◽  
Author(s):  
Samantha Hilliard ◽  
Dennis Friedrich ◽  
Stéphane Kressman ◽  
Henri Strub ◽  
Vincent Artero ◽  
...  
Keyword(s):  
Thin Film ◽  
Water Splitting ◽  
Sol Gel ◽  
Dip Coating ◽  
Solar Water ◽  
Coating Technique ◽  
Solar Water Splitting ◽  
Dip Coating Technique

scholarly journals Enhanced visible transmittance and reduced transition temperature for VO2 thin films modulated by index-tunable SiO2 anti-reflection coatings

RSC Advances ◽  
2018 ◽  
Vol 8 (51) ◽  
pp. 28953-28959 ◽  
Author(s):  
Maodong Zhu ◽  
Hongji Qi ◽  
Bin Wang ◽  
Hu Wang ◽  
Dongping Zhang ◽  
...  
Keyword(s):  
Thin Films ◽  
Transition Temperature ◽  
Sol Gel ◽  
Dip Coating ◽  
Coating Technique ◽  
Infrared Transmittance ◽  
Visible Transmittance ◽  
P Index ◽  
Dip Coating Technique ◽  
Vo2 Thin Films

Index-tunable anti-reflection SiO2 coatings prepared on the surface of VO2 films by sol–gel dip-coating technique to enhance the visible and infrared transmittance of SiO2/VO2 films.

Properties of CaO-SiO2 nanocomposites prepared on pure magnesium by using a sol-gel dip-coating technique

2015 ◽  
Vol 67 (11) ◽  
pp. 1925-1929 ◽  
Author(s):  
Seong Mo Koo ◽  
Ka Ram Kim ◽  
Chunhua Jiang ◽  
Hye Sung Kim ◽  
Kwon Koo Cho
Keyword(s):  
Sol Gel ◽  
Dip Coating ◽  
Pure Magnesium ◽  
Coating Technique ◽  
Sio2 Nanocomposites ◽  
Dip Coating Technique

scholarly journals Characteristics of Al-doped ZnO:Ni films grown on glass by sol–gel dip coating technique

2017 ◽  
Vol 21 (4) ◽  
pp. 425-433 ◽  
Author(s):  
Zohra N. Kayani ◽  
Fareeha Naz ◽  
Saira Riaz ◽  
Shahzad Naseem
Keyword(s):  
Sol Gel ◽  
Dip Coating ◽  
Coating Technique ◽  
Dip Coating Technique
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