Modifier ligands effects on the synthesized TiO2 nanocrystals

Sadeghzadeh‐Attar, Abbas; Ghamsari, M. Sasani; Hajiesmaeilbaigi, F.; Mirdamadi, Sh.

doi:10.1007/s10853-007-2244-z

Cited by 63 publications

(48 citation statements)

References 53 publications

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“…Additionally, the exothermic peak observed at 390°C correlates with the crystallization of the amorphous phase into the anatase. For sample obtained with chelating agent addition, this peak appears at 395°C, different as in the case of TiO 2 powder prepared without AcAc (310°C), which is in agreement with [43]. It can be assumed that above 400°C the powder completely transforms into crystalline form, which is confirmed by weight stabilization.…”

Section: Thermal Analysissupporting

confidence: 84%

“…Several literature reports have confirmed the influence of different modified alkoxide precursors on the physicochemical properties of the resulting titania. Attar et al [43] reported the effect of modifier ligands such as acetylacetone and acetic acid on the formation of titanium dioxide via the sol-gel method. The authors studied the influence of chelating agent on the morphology, thermal stability and crystalline structure of the resulting titania.…”

Section: Discussionmentioning

confidence: 99%

“…In the sol-gel method, control of the reactivity of the metal alkoxides used as precursors is very important in order to obtain sols and gels with desirable properties. In sol-gel processing, for better control of the hydrolysis and condensation process, many different modifiers of alkoxide precursors can be used, including acetylacetone [43][44][45], acetic acid [43,46] and other complex ligands.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The influence of addition of a catalyst and chelating agent on the properties of titanium dioxide synthesized via the sol–gel method

Siwińska-Stefańska

Zdarta

Paukszta

et al. 2015

J Sol-Gel Sci Technol

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Titanium dioxide powders were prepared via the sol-gel method, using titanium alkoxide as a precursor. It was investigated how the addition of a catalyst (ammonia) and chelating agent (acetylacetone), as well as the temperature of calcination, affects the properties of the resulting TiO 2 powder. The physicochemical properties of samples were determined, including the dispersion, morphology and microstructure of the systems (particle size distribution, TEM images), crystalline structure (XRD), characteristics of porous structure (BET), and thermal stability (TGA/DTA). The samples were also analyzed using Fourier transform infrared spectroscopy. In addition, for selected TiO 2 systems, their photocatalytic activity in the decomposition of C.I. Basic Blue 9 was investigated. Our research results show that the presence of chelating agent in the synthesis of titanium dioxide caused significant changes in dispersive properties, crystalline structure and porous structure parameters. The novel feature of this work is the proposed method of synthesis of highly photoactive titanium dioxide with desirable physicochemical properties in the presence of a chelating agent such as acetylacetone. Graphical Abstract

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Section: Thermal Analysissupporting

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The influence of addition of a catalyst and chelating agent on the properties of titanium dioxide synthesized via the sol–gel method

Siwińska-Stefańska

Zdarta

Paukszta

et al. 2015

J Sol-Gel Sci Technol

View full text Add to dashboard Cite

show abstract

“…Small peaks at 1400 and 1124 cm À1 can be attributed to the adsorbed CO 2 . A broad band below 800 cm À1 is related to the characteristic adsorptions of TiO 2 [36,37]. A broad peak centered at 3400 cm À1 was related to the stretching vibrations of OH group of absorbed water molecules [37].…”

Section: Resultsmentioning

confidence: 99%

Electrophoretic deposition of TiO2 and composite TiO2–MnO2 films using benzoic acid and phenolic molecules as charging additives

Wang

Zhitomirsky

2010

Journal of Colloid and Interface Science

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“…7d, sample 3 and sample 4). Because the esterification reaction is reversible, the equilibrium (reaction 1) is driven to the left by adding water [35]. The gel remains transluscent without any precipitate.…”

Section: Optical Aspect Of Gelmentioning

confidence: 99%

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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Modifier ligands effects on the synthesized TiO2 nanocrystals

Cited by 63 publications

References 53 publications

The influence of addition of a catalyst and chelating agent on the properties of titanium dioxide synthesized via the sol–gel method

The influence of addition of a catalyst and chelating agent on the properties of titanium dioxide synthesized via the sol–gel method

Electrophoretic deposition of TiO2 and composite TiO2–MnO2 films using benzoic acid and phenolic molecules as charging additives

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

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