Structure and size distribution of TiO2 nanoparticles deposited on stainless steel mesh

Li, W.; Shah, S. İsmat; Sung, Menghau; Huang, Chia-Hung

doi:10.1116/1.1520557

Cited by 42 publications

(28 citation statements)

References 26 publications

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“…The main precursors of TiO nanoparticles in chemical syntheses up to now have been TTIP [10,11] and TiCl 4 [12,13]. In plasma syntheses, commercially pure titanium oxidized in Ar/O mixtures [14] and TTIP degraded in resistive coupling discharges [15] have been used.…”

Section: Introductionmentioning

confidence: 99%

Chemical Structure of TiO Organometallic Particles Obtained by Plasma

Olayo¹,

González-Salgado²,

Cruz³

et al. 2013

ANP

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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.

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Section: Introductionmentioning

confidence: 99%

Chemical Structure of TiO Organometallic Particles Obtained by Plasma

Olayo¹,

González-Salgado²,

Cruz³

et al. 2013

ANP

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show abstract

“…Up to now, many methods such as, sol-gel process [40][41][42][43], metal organic chemical vapor deposition (MOCVD) [44,45], microemulsion or reverse micelles and hydrothermal process, have been established for TiO 2 synthesis. A multitude of polar or nonpolar solvents have been used in these processes.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic antibacterial performance of Sn4+-doped TiO2 thin films on glass substrate

Sayılkan

Asiltürk

Kiraz

et al. 2009

Journal of Hazardous Materials

129

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“…[1][2][3] Substitutional doping of nitrogen of TiO 2 has revealed an improvement in visible light photocatalytic activity. [1][2][3] Substitutional doping of nitrogen of TiO 2 has revealed an improvement in visible light photocatalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Visible light photocatalysis with nitrogen-doped titanium dioxide nanoparticles prepared by plasma assisted chemical vapor deposition

Buzby

Barakat

Lin

et al. 2006

Journal of Vacuum Science &Amp; Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena

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Visible light photocatalytic activity in nitrogen-doped TiO 2 nanobelts Appl. Phys. Lett. 94, 093101 (2009); 10.1063/1.3093820 Hydrothermal synthesis and visible light photocatalysis of metal-doped titania nanoparticles Structure and size distribution of TiO 2 nanoparticles deposited on stainless steel mesh Nitrogen-doped TiO 2 nanoparticles were synthesized via plasma assisted metal organic chemical vapor deposition. Nitrogen dopant concentration was varied from 0 to 1.61 at. %. The effect of nitrogen ion doping on visible light photocatalysis has been investigated. Samples were analyzed by various analytical techniques such as x-ray diffraction, transmission electron microscopy, x-ray photoelectron spectroscopy, and near-edge x-ray absorption fine structure. Titanium tetraisopropoxide was used as the titanium precursor, while rf-plasma-decomposed ammonia was used as the source for nitrogen doping. The N-doped TiO 2 nanoparticles were deposited on stainless steel mesh under a flow of Ar and O 2 gases at 600°C in a tube reactor. The photocatalytic activity of the prepared N-doped TiO 2 samples was tested by the degradation of 2-chlorophenol ͑2-CP͒ in an aqueous solution using a visible lamp equipped with an UV filter. The efficiency of photocatalytic oxidation of 2-CP was measured using high performance liquid chromatography. Results obtained revealed the formation of N-doped TiO 2 samples as TiO 2−x N x , and a corresponding increase in the visible light photocatalytic activity.

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Structure and size distribution of TiO2 nanoparticles deposited on stainless steel mesh

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Cited by 42 publications

References 26 publications

Chemical Structure of TiO Organometallic Particles Obtained by Plasma

Chemical Structure of TiO Organometallic Particles Obtained by Plasma

Photocatalytic antibacterial performance of Sn4+-doped TiO2 thin films on glass substrate

Visible light photocatalysis with nitrogen-doped titanium dioxide nanoparticles prepared by plasma assisted chemical vapor deposition

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