XRD, Raman and FT-IR spectroscopic observations of nanosized TiO2 synthesized by the sol–gel method based on an esterification reaction

Ivanda, Mile; Musić, Svetozar; Popović, Stanko; Gotić, Marijan

doi:10.1016/s0022-2860(98)00783-2

Cited by 121 publications

(83 citation statements)

References 5 publications

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“…The band at 1633 cm −1 is strongly screened by the dominant bands at 1553 cm −1 and 1453 cm −1 . This result is similar to that published by Ivanda et al [21] for the modification of Ti(IV)-isopropoxide through an esterification reaction between acetic acid and alcohol. The authors proposed that the hydroxylation of titanium alkoxide with water molecules generated in situ by esterification provided excellent control of the hydrolysis and condensation rate.…”

Section: Effect Of Acetic Acid and In Situ Water On Acetate Coordinatsupporting

confidence: 92%

Novel and facile synthesis of transparent-monolithic TiO2 gels by sol-gel method based on an esterification reaction

Elghniji

Anna-Rabah

Elaloui

2016

Materials Science-Poland

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Transparent TiO 2 monoliths were obtained through a modified sol-gel route from titanium isopropoxide as a precursor. By controlling the hydrolysis of this precursor through the intermediate of esterification reaction between acetic acid and isopropanol at 40°C, transparent TiO 2 xerogel monoliths were obtained. The monoliths prepared by this method were transparent in the wavelengths between 400 nm and 700 nm. Fourier transform infrared (FT-IR) spectroscopy suggested that the acetic acid played also an active role as a chelating agent, forming Ti[(OH) y (OOCCH 3 ) x ] less reactive species. Powder X-ray diffraction confirmed the amorphous-to-anatase phase transformation with the formation of unknown Ti-containing complex at 90°C. Only anatase TiO 2 could be observed in the samples calcined at 250°C and 450°C. Optical aspects of the gel (transparenttransluscent transformation of monolithic gel) and gelation time were controlled by changing the amount of external water.

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Section: Effect Of Acetic Acid and In Situ Water On Acetate Coordinatsupporting

confidence: 92%

Novel and facile synthesis of transparent-monolithic TiO2 gels by sol-gel method based on an esterification reaction

Elghniji

Anna-Rabah

Elaloui

2016

Materials Science-Poland

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“…This bonding suppresses the condensation of the oxide gel films by chelating with coordination bonding to the metal elements. 24 It is expected that the condensation was promoted by decomposing this bonding. After 30 min of UV/O 3 treatment, this bonding was decomposed, and two new symmetrical peaks are observed at 1500 cm À1 and 1395 cm À1 , center fitted by Gaussian peaks in Figure 4(c).…”

Section: -mentioning

confidence: 99%

Impact of UV/O3 treatment on solution-processed amorphous InGaZnO4 thin-film transistors

Umeda

Miyasako

Sugiyama

et al. 2013

Journal of Applied Physics

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Ultraviolet–ozone (UV/O3) treatment was adopted to the fabrication of solution-processed amorphous In–Ga–Zn–O thin-film transistors (TFTs), with metal composition of In:Ga:Zn = 1:1:1 represented by InGaZnO4. By applying UV/O3 treatment In–Ga–Zn–O gel films, their condensation was notably enhanced through decomposition of organic- and hydrogen-based elements, which drastically improved the quality of the amorphous InGaZnO4 films. As a result, high TFT performance, with values of on/off ratio, 108; subthreshold swing, 150 mV/decade; threshold voltage, 9.2 V; and field-effect mobility, 5.1 cm2 V−1 s−1, was achieved.

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“…It has been reported that the used acid catalyst, during sol-gel preparation, plays a crucial role for determining the TiO2 phase, in literature [54,55], they found that powder is amorphous when they use acetic acid as catalyst. However, when using formic acid they found that, in addition to amorphous phase, there is an amount of the anatase nanoparticles.…”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 99%

Synthesis, Characterization and Properties of Zirconium Oxide (ZrO2)-Doped Titanium Oxide (TiO2) Thin Films Obtained via Sol-Gel Process

Bensaha¹,

Bensouyad²

2012

Heat Treatment - Conventional and Novel Applications

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XRD, Raman and FT-IR spectroscopic observations of nanosized TiO2 synthesized by the sol–gel method based on an esterification reaction

Cited by 121 publications

References 5 publications

Novel and facile synthesis of transparent-monolithic TiO2 gels by sol-gel method based on an esterification reaction

Novel and facile synthesis of transparent-monolithic TiO2 gels by sol-gel method based on an esterification reaction

Impact of UV/O3 treatment on solution-processed amorphous InGaZnO4 thin-film transistors

Synthesis, Characterization and Properties of Zirconium Oxide (ZrO2)-Doped Titanium Oxide (TiO2) Thin Films Obtained via Sol-Gel Process

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