TiO2 films in the rutile and anatase phases produced by inductively coupled RF plasmas

Valencia-Alvarado, R.; López-Callejas, Régulo; Barocio, S. R.; Mercado-Cabrera, A.; Peña‐Eguiluz, R.; Muñoz-Castro, A.E.; Piedad‐Beneitez, A. de la; Rosa, J. de la

doi:10.1016/j.surfcoat.2010.02.059

Cited by 10 publications

(7 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is because in plasmas the accelerated electrons can reach kinetic energies beyond the bonding energy of the atoms promoting, by collisions, chemical reactions among radicals and/or ions without involving other reagents or substantially increasing the temperature of the synthesis which could damage the reagents [1]. Plasma techniques have already been used to prepare amorphous and/or crystalline phases of titanium oxides [2]. In these conditions, the TiO x configuration of crystalline phases in which x = 2 can be displaced from 2 to other ratios, obtaining materials generically known as TiO.…”

Section: Introductionmentioning

confidence: 99%

Chemical Structure of TiO Organometallic Particles Obtained by Plasma

Olayo¹,

González-Salgado²,

Cruz³

et al. 2013

ANP

View full text Add to dashboard Cite

This work presents a study about the chemical structure of titanium oxide (TiO) particles synthesized by plasmas using titanium tetrapropoxide, Ti(-O-CH 2 -CH 2 -CH 3 ) 4 . In plasmas, practically all chemical bonds are susceptible to participate in the reactions producing different results than those obtained by the traditional chemical routes. The particles obtained this way are semispheres and fibers grouped in random and layered structures in the 120 -500 nm interval and mean diameter of 86.4 nm (fibers) and 308.6 nm (semispheres). The analysis of the resulting TiO structure was performed by IR and XPS finding that the main chemical state of Ti in these conditions was O 2 -Ti-O 2 (Ti surrounded by O) which is part of the precursor structure, however, in O, the main chemical state was Ti-O-Ti formed with the rupture of the precursor Ti-O-C bonds. These last bonds reduce the conjugation between the structure of both elements, O 2 -Ti-O 2 and Ti-O-Ti, to produce organometallic compounds. Other chemical states appeared showing consecutive dehydrogenation steps during the synthesis with the formation of multiple bonds as a consequence of the continuous collisions in the plasma. These results allow us to follow the chemical reactions promoted by this kind of plasmas to produce TiO nanoparticles which are essentially conformed of intensive dehydrogenation.

show abstract

Section: Introductionmentioning

confidence: 99%

Chemical Structure of TiO Organometallic Particles Obtained by Plasma

Olayo¹,

González-Salgado²,

Cruz³

et al. 2013

ANP

View full text Add to dashboard Cite

show abstract

“…; Valencia‐Alvarado et al. , ). Compared with untreated Ti implants, O‐PIII‐treatment has been shown to improve osseointegration in rat femurs after 3 months of incubation (Mändl et al.…”

mentioning

confidence: 99%

Oxygen plasma immersion ion implantation treatment enhances the human bone marrow mesenchymal stem cells responses to titanium surface for dental implant application

Yang

Tsai

et al. 2013

Clinical Oral Implants Res

View full text Add to dashboard Cite

show abstract

“…The plasma combination of both components, TiOx and Py, have shown an overlap of both sensitivities, resulting in enhanced photosensitive materials . Amorphous and crystalline TiOx structures have also been obtained by inductive plasmas with atomic ratios O/Ti close to 2 …”

Section: Introductionmentioning

confidence: 99%

Carbonization, Hydrogenation, Oxidation and Electromagnetic Absorption of TiOx‐Pyrrole Compounds

González-Salgado

Olayo

García-Rosales

et al. 2017

Macromolecular Symposia

View full text Add to dashboard Cite

This work presents a morphologic, structural and electromagnetic absorption study in plasma‐synthesized organometallic hybrid compounds based on titanium oxide and pyrrole, which could potentially be used as photoconductive materials in solar cells. The synthesis was carried out with the combination in liquid phase of titanium tetra isopropoxide and pyrrole with 1:1 mass ratio in a glass vacuum tubular reactor with resistive electric discharges and reaction intervals from 60 to 240 min. Films and particles were formed with mean particle diameter of 438 nm. The hybrid compounds presented functional groups with multiple bonds related with pyrrole and TiOx structures. Organic and inorganic phases were detected in the hybrid matrices in which carbonization, hydrogenation, oxidation and nitridation were quantified which suggested strong dehydrogenation and the formation of multiple bonds in the plasma reactions. The compounds absorbed electromagnetic radiation in two regions with different intensity. The first and most intense one was between 190 and 350 nm wavelength, the second one was identified from 350 to 800 nm, this effect suggests that the titanium oxide is the dominant fraction in the first region and pyrrole in the second.

show abstract

TiO2 films in the rutile and anatase phases produced by inductively coupled RF plasmas

Cited by 10 publications

References 18 publications

Chemical Structure of TiO Organometallic Particles Obtained by Plasma

Chemical Structure of TiO Organometallic Particles Obtained by Plasma

Oxygen plasma immersion ion implantation treatment enhances the human bone marrow mesenchymal stem cells responses to titanium surface for dental implant application

Carbonization, Hydrogenation, Oxidation and Electromagnetic Absorption of TiOx‐Pyrrole Compounds

Contact Info

Product

Resources

About