Sol-gel titania films were deposited on 316L stainless steel using titanium isopropoxide as a chemical precursor. Dipcoating was performed at withdrawal speeds of 6 mm/min, 30 mm/min, and 60 mm/min. Deposited gel films were heat treated in air at 80 ̊C, 100 ̊C, 300 ̊C, and 400 ̊C. The structural evolution of the coatings was evaluated by infrared reflection-absorption spectroscopy. The influence of...

The most common spectrophotometric reagents employed for the determination of titanium (IV) are hydrogen peroxide[1] and tiron[2]. However, N-benzoylN-phenylhydroxylamine[3,4] and N-phenyllaurohydroxamic acid[5] are introduced for extractive spectrophotometric determination of titanium (IV). Aroylhydraones such as pyridoxal salicyloylhydrazone[6], diphenylglyoxal bis (benzoylhydrazone)[7] and d...

Since, the inception of the vast field of implantology in 1969, this method still remains a popular and reliable one for the replacement of missing teeth. Over the years designs by various researchers have been introduced as well as modifications to the surface of the titanium being used. Characteristics of titanium implant surfaces have been modified by additive methods (e.g. titanium plasma s...

Modafinil (Diphenyl methyl Sulfinyl acetamid) is used clinically in the treatment of narcolepsy and sleeping disorders. The synthesis of R-modafinil, have started with the reaction of benzhydrol and thioglycolic acid in trifluoroacetic acid to afford benzhydryl sulfanyl acetic acid. The reaction of acid with thionyl chloride in benzene followed by treatment with ammonium hydroxide gave acetamid...

Reaction of titanium(IV) isopropoxide, Ti(OiPr)4, with an equimolar amount of phthalic anhydride resulted in the transfer of an isopropoxido group from the metal atom to one carbonyl group of the anhydride and coordination of the thus formed monoester to the titanium atom. One monoester ligand in Ti2(OiPr)6(μ2-OOC-C6H4-COOiPr)(η1-OOC-C6H4-COOiPr)(iPrOH) is bridging and the other is η1-coordinat...

PURPOSE To analyze the surface composition of 34 different commercially available titanium dental implants. MATERIALS AND METHODS Surface composition was evaluated by x-ray photoelectron spectroscopy (XPS). Samples were divided into 4 groups, depending on their surface topography (machined, sandblasted, acid etched, or plasma sprayed). RESULTS Statistical analysis of the data showed a clear...

In this paper, silica gel supported titanium dioxide particles (TiO2/SiO2) prepared by acid-catalyzed sol–gel method was as photocatalyst in the degradation of acid orange 7 (AO7) in water under visible light irradiation. The particles were characterized by X-ray diffraction, BET specific surface area determination, and point of zero charge measurement. The supported catalyst had large surface ...