Synthesis of TiO2 based on hydrothermal methods using elevated pressures and microwave conditions

Lu, Chia‐Wen; Cao, Yan bo; Li, Hui; Webb, Cathleen; Pan, Wei‐Ping

doi:10.1007/s10973-014-3740-4

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…Obtaining the nanocomposite PMMA/TiO 2 There are different methods applied to synthesize the titania nanoparticles [18,19] each technique presenting its own benefits and specific characteristic depending on the intended applications. However, the hydrothermal and sol-gel process to obtain the TiO 2 nanoparticles are frequently used due to their materials availability, easy procedure and better physical and chemical properties of the final product [20].…”

Section: Experimental Part Reagents and Apparatusmentioning

confidence: 99%

On Physical and Chemical Characteristics of Poly(methylmethacrylate) Nanocomposites for Dental Applications. I.

Totu¹,

Cristache²,

Voicila³

et al. 2017

Mat.Plast.

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The objective of this paper is to present the thermal behavior of various PMMA/TiO2 nanocomposite for complete dentures fabrication with 3D printing technology. There have been prepared and thermally characterized polymeric composites with varied nanofiller content ranging between 0.2% and 2.5% (w/w%). The nanocomposites proved a better thermal performance than that of pure copolymer PMMA-MMA or 3D printing PMMA polymer complex matrix. A small difference in glass transition (Tg) temperature for all compounds studied was recorded.

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Section: Experimental Part Reagents and Apparatusmentioning

confidence: 99%

On Physical and Chemical Characteristics of Poly(methylmethacrylate) Nanocomposites for Dental Applications. I.

Totu¹,

Cristache²,

Voicila³

et al. 2017

Mat.Plast.

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“…Undoped or doped titanium-dioxide powders were obtained by different methods. Among them, the most frequently used methods in the liquid phase are: the sol–gel process [ 11 , 12 , 13 , 14 , 15 , 16 ], hydrothermal methods [ 8 , 17 ], coprecipitation [ 18 ], hydrothermal-assisted sol–gel method [ 19 ], microwave-assisted hydrothermal method [ 20 , 21 ], ultrasound-assisted sol–gel [ 18 , 22 ], and microwave-assisted sol–gel [ 19 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Copper-/Zinc-Doped TiO2 Nanopowders Synthesized by Microwave-Assisted Sol–Gel Method

Predoană

Petcu

Preda

et al. 2023

Gels

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Using the microwave-assisted sol–gel method, Zn- and Cu-doped TiO2 nanoparticles with an anatase crystalline structure were prepared. Titanium (IV) butoxide was used as a TiO2 precursor, with parental alcohol as a solvent and ammonia water as a catalyst. Based on the TG/DTA results, the powders were thermally treated at 500 °C. XRD and XRF revealed the presence of a single-phase anatase and dopants in the thermally treated nanoparticles. The surface of the nanoparticles and the oxidation states of the elements were studied using XPS, which confirmed the presence of Ti, O, Zn, and Cu. The photocatalytic activity of the doped TiO2 nanopowders was tested for the degradation of methyl-orange (MO) dye. The results indicate that Cu doping increases the photoactivity of TiO2 in the visible-light range by narrowing the band-gap energy.

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“…For the preparation of TiO 2 or doped TiO 2 materials, different methods are available [ 26 , 27 , 28 , 29 , 30 ]. Among them, the sol−gel method is often used to synthesize doped TiO 2 because it has advantages such as high purity, relatively low processing temperature and the fact that it offers the possibility of controlling stoichiometry [ 31 , 32 , 33 , 34 , 35 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic and Antibacterial Properties of Doped TiO2 Nanopowders Synthesized by Sol−Gel Method

Preda

Pandele–Cușu

Petrescu

et al. 2022

Gels

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For environmental applications, nanosized TiO2-based materials are known as the most important photocatalyst and are intensively studied for their advantages such as their higher activity, lower price, and chemical and photoresist properties. Zn or Cu doped TiO2 nanoparticles with anatase crystalline structure were synthesized by sol−gel process. Titanium (IV) butoxide was used as a TiO2 precursor, with parental alcohol as a solvent, and a hydrolysing agent (ammonia-containing water) was added to obtain a solution with pH 10. The gels were characterized by TG/DTA analysis, SEM, and XPS. Based on TG/DTA results, the temperature of 500 °C was chosen for processing the powders in air. The structure of the samples thermally treated at 500 °C was analysed by XRD and the patterns show crystallization in a single phase of TiO2 (anatase). The surface of the samples and the oxidation states was investigated by XPS, confirming the presence of Ti, O, Zn and Cu. The antibacterial activity of the nanoparticle powder samples was verified using the gram−positive bacterium Staphylococcus aureus. The photocatalytic efficiency of the doped TiO2 nanopowders for degradation of methyl orange (MO) is here examined in order to evaluate the potential applications of these materials for environmental remediation.

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Synthesis of TiO2 based on hydrothermal methods using elevated pressures and microwave conditions

Cited by 8 publications

References 9 publications

On Physical and Chemical Characteristics of Poly(methylmethacrylate) Nanocomposites for Dental Applications. I.

On Physical and Chemical Characteristics of Poly(methylmethacrylate) Nanocomposites for Dental Applications. I.

Copper-/Zinc-Doped TiO2 Nanopowders Synthesized by Microwave-Assisted Sol–Gel Method

Photocatalytic and Antibacterial Properties of Doped TiO2 Nanopowders Synthesized by Sol−Gel Method

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