Synthesis of nanosized TiO2 powders via a hydrothermal microemulsion process

Lu, Chung‐Hsin; Wen, Ming-Chang

doi:10.1016/j.jallcom.2007.01.043

Cited by 37 publications

(20 citation statements)

References 20 publications

(23 reference statements)

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“…In this study, a microemulsion technique was used to prepare BaCe 1−x Gd x O 3−˛c eramic samples due to its advantages in obtain- * Corresponding author. ing high component homogeneity and phase purity and reducing sintering temperature of the samples [9,10].…”

Section: Introductionmentioning

confidence: 98%

Proton conduction in BaCe1−xGdxO3−α at intermediate temperature and its application to synthesis of ammonia at atmospheric pressure

Chen

Guo

2009

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 98%

Proton conduction in BaCe1−xGdxO3−α at intermediate temperature and its application to synthesis of ammonia at atmospheric pressure

Chen

Guo

2009

Journal of Alloys and Compounds

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“…A higher photocatalytic activity has been proved by anatase phase in degradation of organic compounds. TiO 2 NPs can be synthesised by various methods like sol-gel, hydrothermal, emulsion, anodization, vapour deposition, sonication, and microwave [3][4][5][6][7][8][9][10]. Reddy et al reported the synthesis of TiO 2 NPs by molten salt method [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterisation of Mesoporous TiO2 Nanoparticles by Novel Surfactant Assisted Sol-gel Method for the Degradation of Organic Compounds

Phattepur¹,

Siddaiah²,

Nagaraju³

2018

Period. Polytech. Chem. Eng.

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A sol-gel method was employed to synthesise pure titanium dioxide (TiO 2 ) and surfactant assisted TiO 2 nanoparticles (NPs).The effect of novel surfactant viz., Lauryl lactyl lactate on photocatalytic properties of TiO 2 was studied. TiO 2 NPs were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), UV-Vis Diffuse Reflectance spectra (DRS), Field emission scanning electron microscopy (FE-SEM), Transmission electron microscopy (TEM), Thermo gravimetric analysis (TGA), and Brunauer -Emmet -Teller (BET) surface area. Anatase phase of TiO 2 was confirmed by X-Ray diffraction pattern and the crystallite size was between 9-19 nm. Addition of surfactant improved the BET surface area, surface defects, while the agglomeration of particles was reduced. DRS results revealed that the addition of surfactant to TiO 2 sol induced a red shift of the absorption edge which resulted in the reduction of band gap from 3.23 to 3.21 eV. These physicochemical properties of TiO 2 NPs were correlated with photocatalytic degradation of phenol. About 92% of phenol degradation was observed for surfactant assisted TiO 2 NPs (SA-TiO 2 ). Salicylic acid and caffeine were also degraded using SA-TiO 2 NPs.

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“…Together with this, the control of morphological properties is also essential for material reactivity (Yuan et al, 2002;Addamo et al, 2004). The literature reports several synthetic methods to obtain titanium oxide with tetragonal-anatase structure and controlled morphological properties; the most important are the sol-gel method, hydrolysis of inorganic salts, ultrasound technique, micro-emulsion method or reverse micelle and some hydrothermal processes (Kim et al, 2007;Lu et al, 2008;Štengl et al, 2008;Štengl et al, 2010). The sol-gel method and hydrothermal process are the most common synthetic routes used to prepare the transition metal oxide previously mentioned (Chuang et al, 2009;Collazzo et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and physicochemical characterization of titanium oxide and sulfated titanium oxide obtained by thermal hydrolysis of titanium tetrachloride

Benito

Sánchez

García-Alamilla

et al. 2014

Braz. J. Chem. Eng.

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-This work reports the synthesis of titanium oxide (TiO 2 ) and sulfated titanium oxide (TiO 2 -SO 4 2-) obtained by thermal hydrolysis of titanium tetrachloride. Titanium hydroxide synthesized by this method was impregnated with a 1 N H 2 SO 4 solution, to give amounts of sulfate ions (SO 4 2-) of 3 and 7 wt%. The synthesized samples were dried at 120 °C during 24 h and then calcined for 3 h at 400 °C. Thermal analyses, X-ray diffraction, nitrogen physisorption, infrared spectroscopy, potentiometric titration with n-butylamine, U.V.-visible diffuse reflectance spectroscopy and scanning electron microscopy were used to characterize the materials. The results of physicochemical characterization revealed that a mixture of crystalline structures, anatase, brookite and rutile developed in the titanium oxide, stabilizing the anatase structure in the sulfated titanium oxides, and coexisting with a small amount of brookite structure. The synthesized mesoporous materials developed specific surface areas between 62 and 70 m 2 g -1, without detecting an important influence of sulfation on this parameter. The presence of sulfate ions improved the acidity of titanium oxide and modified the characteristics of light absorption in the 425-600 nm region, which suggests the possibility of using these materials in reactions assisted by visible light.

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Synthesis of nanosized TiO2 powders via a hydrothermal microemulsion process

Cited by 37 publications

References 20 publications

Proton conduction in BaCe1−xGdxO3−α at intermediate temperature and its application to synthesis of ammonia at atmospheric pressure

Proton conduction in BaCe1−xGdxO3−α at intermediate temperature and its application to synthesis of ammonia at atmospheric pressure

Synthesis and Characterisation of Mesoporous TiO2 Nanoparticles by Novel Surfactant Assisted Sol-gel Method for the Degradation of Organic Compounds

Synthesis and physicochemical characterization of titanium oxide and sulfated titanium oxide obtained by thermal hydrolysis of titanium tetrachloride

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