Synthesis of Uniform Anatase TiO2 Nanoparticles by Gel–Sol Method

Sugimoto, Tadao; Zhou, Xingping; Muramatsu, Atsushi

doi:10.1006/jcis.2002.8454

Cited by 221 publications

(172 citation statements)

References 20 publications

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“…Recently, fine particles of titania have attracted a great deal of attention, because of their specific properties as an advanced semiconductor material, such as a solar cell, luminescent material, and photocatalyst for photolysis of water or organic compounds and for bacteriocidal action (Sugimoto et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of undoped and cobalt-doped TiO2 nanoparticles via sol–gel technique

et al. 2014

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TiO 2 nanoparticles doped with different concentrations of cobalt (4, 8, 12 and 16 %) were synthesized by sol-gel method at room temperature with appropriate reactants. In general, TiO 2 can exist in anatase, rutile, and brookite phases. In this present study, we used titanium tetra iso propoxide and 2-propanol as a common starting materials and the obtained products were calcined at 500°C and 800°C to get anatase and rutile phases, respectively. The crystalline sizes of the doped and undoped TiO 2 nanoparticles were observed with X-ray diffraction (XRD) analysis. The functional groups of the samples were identified by Fourier transform infrared spectroscopy (FTIR). From UV-VIS diffuse reflectance spectra (DRS), the band gap energy and excitation wavelength of doped and undoped TiO 2 nanoparticles were identified. The defect oriented emissions were seen from photoluminescence (PL) study. The spherical uniform size distribution of particles and elements present in the samples was determined using two different techniques viz., scanning electron microscopy (SEM) with energy-dispersive spectrometer (EDX) and transmission electron microscope (TEM) with selected area electron diffraction (SAED) pattern. The second harmonic generation (SHG) efficiency was also found and the obtained result was compared with potassium di hydrogen phosphate (KDP).

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of undoped and cobalt-doped TiO2 nanoparticles via sol–gel technique

et al. 2014

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“…The precursor solution of titania nano-crystals was prepared by mixing TIPO with TEA according to the previous literature. 53),54) After adding the Mont powder to the precursor solution (CEC of Mont : TIPO : TEA : H 2 O＝0.0033 : 0.1 : 0.2 : 7.8 (mol)), the mixed aqueous suspension was refluxed at 50°C for 24 h in a dark. After centrifugation at 5000 rpm for 1.5 h, the collected precipitation was rinsed with 1 dm 3 of distilled-deionized water (DDW) and ethanol, respectively.…”

Section: Methodsmentioning

confidence: 99%

Preparation of organoclay having titania nano-crystals in interlayer hydrophobic field and its characterization

Sasai

Hotta

Itoh

2008

J. Ceram. Soc. Japan

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To prepare the material for cleaning up the water polluted by the toxic organic compounds with poor polarity such the endocrine disruptor chemicals, we attempted to prepare the cation-exchangeable titania-pillared clay by the hydrothermal synthesis. White powder obtained by the hydrothermal treatment of the montmorillonite with titania precursor in water still had the cation-exchangeable property. Both TEM image and XRD patterns showed that anatase-type nano-crystals (crystalline size: ca. 20 nm) were incorporated in the montmorillonite interlayer space. The organoclay having titania nano-crystals (OCT) could be prepare by intercalating the cetyltrimentylammonium cations to the montmorillonite with titania nano-crystals (CT) due to the cation-exchange reaction. The adsorption amount of bisphenol A (BPA) by the OCT from water was about 6th times larger than that by the CT, because the OCT has higher hydrophobicity than CT. From UV irradiation experiment by 300 W highpressure Hg lamp, it was found that OCT exhibited the higher photocatalytic decomposition ability for BPA dissolved in water than both CT and titania nano-crystal powder, which was synthesized under the hydrothermal condition. Moreover, the present OCT exhibited the high durability against the continuous UV irradiation.

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“…Ellipsoidal titania particles are synthesized by a "gel-sol" chemistry in the presence of ethylenediamine. 120 The polycrystalline nanoparticles have an equatorial radius a = 24 ± 4 nm, a polar radius b = 130 ± 31 nm and a density of 2.74 ± 0.10 g/cm 3 . Films of titania particles are deposited on aluminum coated glass slide by flow coating.…”

Section: 133106 (2011))mentioning

confidence: 98%

Interfacial electron and phonon scattering processes in high-powered nanoscale applications.

Hopkins¹

2011

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The overarching goal of this Truman LDRD project was to explore mechanisms of thermal transport at interfaces of nanomaterials, specifically linking the thermal conductivity and thermal boundary conductance to the structures and geometries of interfaces and boundaries. Deposition, fabrication, and post possessing procedures of nanocomposites and devices can give rise to interatomic mixing around interfaces of materials leading to stresses and imperfections that could affect heat transfer. An understanding of the physics of energy carrier scattering processes and their response to interfacial disorder will elucidate the potentials of applying these novel materials to next-generation high powered nanodevices and energy conversion applications. An additional goal of this project was to use the knowledge gained from linking interfacial structure to thermal transport in order to develop avenues to control, or "tune" the thermal transport in nanosystems.4

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Synthesis of Uniform Anatase TiO2 Nanoparticles by Gel–Sol Method

Cited by 221 publications

References 20 publications

Synthesis and characterization of undoped and cobalt-doped TiO2 nanoparticles via sol–gel technique

Synthesis and characterization of undoped and cobalt-doped TiO2 nanoparticles via sol–gel technique

Preparation of organoclay having titania nano-crystals in interlayer hydrophobic field and its characterization

Interfacial electron and phonon scattering processes in high-powered nanoscale applications.

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