Nanoparticulate titanium dioxide synthesized by sol–gel and solution combustion techniques

Jongprateep, Oratai; Puranasamriddhi, Rachata; Palomas, Jednupong

doi:10.1016/j.ceramint.2015.03.193

Cited by 20 publications

(11 citation statements)

References 12 publications

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“…The obtained results are in agreement with those reported in literature [47,48]. Indeed, Sasani Ghamsari et al [49] synthesized TiO 2 nanoparticles by the sol–gel method and obtained very small particle even if the presence of agglomeration among the particles is evident.…”

Section: Resultssupporting

confidence: 92%

Influence of the Heat Treatment on the Particles Size and on the Crystalline Phase of TiO2 Synthesized by the Sol-Gel Method

Catauro

Tranquillo

Poggetto³

et al. 2018

Materials

101

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Titanium biomaterials’ response has been recognized to be affected by particles size, crystal structure, and surface properties. Chemical and structural properties of these nanoparticle materials are important, but their size is the key aspect. The aim of this study is the synthesis of TiO2 nanoparticles by the sol-gel method, which is an ideal technique to prepare nanomaterials at low temperature. The heat treatment can affect the structure of the final product and consequently its biological properties. For this reason, the chemical structure of the TiO2 nanoparticles synthesized was investigated after each heat treatment, in order to evaluate the presence of different phases formed among the nanoparticles. FTIR spectroscopy and XRD have been used to evaluate the different structures. The results of these analyses suggest that an increase of the calcination temperature induces the formation of mixed-crystalline-phases with different content of anatase and rutile phases. The results obtained by SEM measurements suggest that an increase in the particles size accompanied by a noticeable aggregation of TiO2 nanoparticles is due to high temperatures achieved during the thermal treatments and confirmed the presence of different content of the two crystalline phases of titanium dioxide.

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Section: Resultssupporting

confidence: 92%

Influence of the Heat Treatment on the Particles Size and on the Crystalline Phase of TiO2 Synthesized by the Sol-Gel Method

Catauro

Tranquillo

Poggetto³

et al. 2018

Materials

101

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“…Titanium dioxide is a widely accepted photocatalyst due to its high oxidation efficiency, non-toxicity, high photo stability, chemical inertness and environmental friendly nature [24,25]. It is a wide band gap (~ 3.2eV) semiconductor and mineralizes a large range of organic pollutants such as herbicides, dyes, pesticides, phenolic compounds, tetracycline, sulfamethazine, etc under UV irradiation [26].…”

Section: Introductionmentioning

confidence: 99%

“…In this regard photo catalytic processes have advantages for the removal of pollutants even at low concentration for industrial waste water [22]. Moreover in photo oxidation, complete oxidation of organic pollutants take place within few hours, even at ppb level, without formation of secondary hazardous products using highly active and cheap catalysts which can be used in specially design reactor systems [23].Titanium dioxide is a widely accepted photocatalyst due to its high oxidation efficiency, non-toxicity, high photo stability, chemical inertness and environmental friendly nature [24,25]. It is a wide band gap (~ 3.2eV) semiconductor and mineralizes a large range of organic pollutants such as herbicides, dyes, pesticides, phenolic compounds, tetracycline, sulfamethazine, etc under UV irradiation [26].…”

mentioning

confidence: 99%

A Review on the Factors Affecting the Photocatalytic Degradation of Hazardous Materials

Kumar

Gajanan

ey³

2017

MSEIJ

207

141

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The oxidation rates and efficiency of the photocatalytic system are highly dependent on a number of operational parameters that govern the photodegradation of the organic molecule. Several study have been reported the significance of operational parameter. The photodegradation depends on the some basic parameters which are concentration of substrate, amount of photocatalyst, pH of the solution, temperature of reaction medium, time of irradiation of light, the intensity of light, surface area of photocatalyst, dissolve oxygen in the reaction medium, nature of the photocatalyst, nature of the substrate, doping of metal ions and non metal and structure of photocatalyst and substrate. The photodegradation of organic compound have been studied by the several scientists and conclude the optimum conditions for the photodegradation of organic compound.The photodegradation of organic compounds was found maximum at low concentration of organic substrate with optimum amount of photocatalyst. The pH of the solution is also affect the photodegradation of organic substrate. The Titania show the maximum adsorption at low pH hence the photodegradation also found maximum at low pH. The surface area is the crucial factor for the photodegradation of organic substrate. If we are increasing the surface area of photocatalyst, the photodegradation of organic substrate increase. This is because that the number of active site increased with increasing the surface area. The amount of photocatalyst is the primary requirement of any photocatalysis process. The amount of photocatalyst should be optimum, if we take the high amount of photocatalyst the photodegradation is decreased, if we take the low amount of photocatalyst the photodegradation also decreased. The doping of metal ions and non-metal ions affect the photodegradation of organic substrate. Therefore, we have to use the metal ions which increased the positive charge on the surface of photocatalyst. The temperature and irradiation of light also affect the photodegradation of organic substrate. For the maximum photodegradation, the photocatalytic reaction should perform at room temperature not greater than 80 °C. The light of irradiation should be used which exit the electron easily from valence band to conduction band or equal to band gap energy. Keywords: A Review on the Factors Affecting the Photocatalytic Degradation of Hazardous Materials 2/10Copyright: ©2017 Kumar et al. for the removal of pollutants at high concentrations. The biological treatments are very slow, dispose large amount of sludge and required strict control of proper pH and temperature [21]. In this regard photo catalytic processes have advantages for the removal of pollutants even at low concentration for industrial waste water [22]. Moreover in photo oxidation, complete oxidation of organic pollutants take place within few hours, even at ppb level, without formation of secondary hazardous products using highly active and cheap catalysts which can be used in specially design reactor systems [23].Ti...

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“…The solution was then heated at 60 °C for 1 h in a closed vessel. The solution was calcined at 600 °C for 3 h to obtain white titanium oxide powder …”

Section: Methodsmentioning

confidence: 99%

“…The solution was calcined at 600 C for 3 h to obtain white titanium oxide powder. [20][21][22] 2.3. Synthesis of TiO 2 /PAni Nanocomposite Nanocomposite of TiO 2 /PAni Synthesis was prepared as 5 μL (0.06 mmol) aniline injected to 7.5 mL phosphate buffer pH 4.3 containing nano-TiO 2 with constant stirring for 15 min at room temperature.…”

Section: Synthesis Of Titanium Dioxidementioning

confidence: 99%

Synthesis, Characterization of Titania/Polyaniline/GO Nanocomposites, and Its Photocatalytic Activity Under UV‐Visible Light

Kumar

Pandey

2018

Macromolecular Symposia

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In the present study, to prepare the TiO2, TiO2/PAni, and TiO2/PAni/GO nanocomposites wet chemical method and they are used as photocatalyst for the photodegradation of Vitoria Blue B dye. The prepared TiO2, TiO2/PAni, and TiO2/PAni/GO are subjected to XRD analysis, which gives the information about the presence of phase rutile and anatase both phases are present in the samples. The SEM and TEM of the prepared samples are shown in the particles morphology. The prepared samples are found in nanodiamension. The Photocatalytic degradation of Vitoria Blue B dye is done at different condition of concentration of dye, time of illumination pH, and dose of photocatalyst. The % photodegradation efficiency of Vitoria Blue B dye occur efficiently with TiO2, TiO2/PAni, and TiO2/PAni/GO and highest for TiO2/PAni/GO.

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Nanoparticulate titanium dioxide synthesized by sol–gel and solution combustion techniques

Cited by 20 publications

References 12 publications

Influence of the Heat Treatment on the Particles Size and on the Crystalline Phase of TiO2 Synthesized by the Sol-Gel Method

Influence of the Heat Treatment on the Particles Size and on the Crystalline Phase of TiO2 Synthesized by the Sol-Gel Method

A Review on the Factors Affecting the Photocatalytic Degradation of Hazardous Materials

Synthesis, Characterization of Titania/Polyaniline/GO Nanocomposites, and Its Photocatalytic Activity Under UV‐Visible Light

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