Glycothermal Synthesis and Photocatalytic Properties of Highly Crystallized Anatase TiO&lt;SUB&gt;2&lt;/SUB&gt; Nanoparticles

Kil, Hyun-Sig; Jung, Young-Dae; Moon, Jung-In; Song, Jeonghwan; Lim, Dae-Young; Cho, Seung-Beom

doi:10.1166/jnn.2015.10430

Cited by 20 publications

(11 citation statements)

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“…In recent years, many researchers have studied photocatalysis using powder 7,8 or thin film 9–11 titania. Powder titania has a wider application because of its high specific surface area, quantum yield, and photocatalytic efficiency.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of rhodamine B catalyzed by TiO₂films on a capillary column

Yang

2018

RSC Adv.

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TiO 2 films on a capillary column were prepared using tetrabutoxytitanium as a source of TiO 2 via the sol-gel method. The film thickness showed a linear increase with tetrabutoxytitanium concentration. The specific surface area of the film was improved by adding polyethylene glycol with different molecular weights.Under optimal conditions, the prepared film had a good mesoporous structure with specific surface area of 47.72 m 2 g À1, and showed nearly spherical nanoparticles with a 10 nm diameter and anatase phase.Influences of the thickness, specific surface area, and initial solution concentration on photodegradation of rhodamine B using TiO 2 films as a catalyst were investigated. The results showed that the photodegradation efficiency increased with an increasing thickness and specific surface area of TiO 2 films. For a rhodamine B solution of 15 mg L À1, the photodegradation efficiency was 98.33% in 30 min under the optimal conditions. The catalysts could be reused up to eight times with almost the same efficiency, indicating a firm immobilization of films on the inner wall of the capillary. Therefore, TiO 2 films are promising for the treatment of wastewater.

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Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of rhodamine B catalyzed by TiO₂films on a capillary column

Yang

2018

RSC Adv.

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“…The diffractograms of pure and Mg-doped TiO 2 nanoparticles (0.75 and 1.5 at.%) are shown in Figure 1. It is obvious from the patterns, the anatase phase is the main phase in all samples [25]. However, a weak diffraction peak along (1 1 0) indicating the rutile phase is observed for pure titania showing the formation of a mixed phase structure for this sample.…”

Section: X-ray Diffractionmentioning

confidence: 79%

Preparation of Mg-doped TiO2 nanoparticles for photocatalytic degradation of some organic pollutants

Giahi¹,

Pathania²,

Agarwal³

et al. 2019

Studia UBB Chemia

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In this study, the sol-gel method was used to prepare Mgdoped TiO2 nanoparticles from titanium tetraisopropoxide and magnesium sulfate as the dopant precursors. Mg-doped TiO2 shows the formation of anatase phase with polyhedral and spherical particles with an average size of 25-30 nm. X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy and photoluminescence were used to characterize the prepared material. The photocatalytic degradation performance of rhodamine B, nonylphenol ethoxylates, pseudoephedrine hydrochloride, and nicotine on Mg-doped TiO2 was studied under UV irradiation. The photocatalytic degradation shows that 98.92, 98.00, 98.00 and 97.95% of rhodamine B, nonylphenol ethoxylates, pseudoephedrine hydrochloride, and nicotine was decomposed by Mg-doped TiO2, respectively.

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“…To synthesize crystalline particles using the glycothermal concepts embodied in hydrothermal processing approaches, a few investigations have studied the use of nonaqueous systems as glycol media. We have shown that a glycothermal process provides a facile low-temperature route to produce BaTiO 3 , Fe 3 O 4 , Y-doped ZrO 2 , TiO 2 , ZnO, and ZnS particles with the desired morphology and size, as described in our previous study [35][36][37][38][39][40][41]. Our research embodies some novelty concepts that differ from the reported technology for particle synthesis.…”

Section: Introductionmentioning

confidence: 80%

“…This result was consistent with the FT-IR analyses, as shown in Figure 9. The weak band at 1640 cm −1 , between 3600 cm −1 and 4000 cm −1 (bending mode of H 2 O), indicates that some H 2 O is present [38,39]. The two broad peaks at around 750 cm −1 and 3350 cm −1 are associated with the O-H stretching vibration of absorbed water and hydroxyl group [27,38,39].…”

Section: Glycothermal Synthesis Of Knn Particlesmentioning

confidence: 99%

Facile Glycothermal Synthesis of KxNa(1−x)NbO3 Particles

2022

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KxNa(1−x)NbO3 particles (KNN, 0 < × < 1) were successfully synthesized through a facile glycothermal method by using KOH, NaOH and Nb2O5 as precursors and 1,4-butanediol as solvent at 200 °C for 12 h. The effects of varying the 1,4-butanediol/deionized water (B/W) volume ratio as solvent on the growth behavior, the morphological evolution, and the particle size of the synthesized KNN particles were investigated. In order to obtain K0.5Na0.5NbO3 with the morphotropic phase boundary (MPB) at the potassium content of x ≈ 0.5, the effect of varying K+/Na+ molar ratio on the composition of the obtained KNN particles was investigated. The crystal phase structure, morphology, particle size, chemical composition, and thermal behavior of the obtained particle samples were characterized using XRD, FE-SEM, EDS, TG, FT-IR, PSA, and TEM. The pure orthorhombic KNN particle close to NaNbO3 phase was obtained at the same concentration K+/Na+ of 1.0/1.0 and [K++Na+]/Nb molar ratio of 2.0/0.1. The synthesized K0.01Na0.99NbO3 particle exhibited a hexahedron shape with an average crystallite size of approximately 400 nm by glycothermal treated at 200 °C for 12 h. It is also demonstrated that the size of Na-rich KNN particles was decreased from 15 µm to 400 nm with increasing 1,4-butanediol content at various reaction conditions such as the volume ratio of B/W and can be controlled by 1,4-butanediol with an additive of water. Until the molar ratio of K+/Na+ reaches 1.6/0.4, the obtained particles have produced a Na-rich KNN phase, whereas when the molar ratio of K+/Na+ is 1.8/0.2, the particles could obtain a K-rich KNN phase. The results revealed that single-phase K0.5Na0.5NbO3 particles could be obtained at a relatively narrow molar ratio of K+/Na+ to 1.7/0.3. The particles with weakened agglomerate could obtain the average particle size of approximately 400 nm and a hexahedron shape. In comparison with the traditional hydrothermal method, the glycothermal method has been confirmed to be a more efficient method in controlling the particle size of KNN particles from micro- to sub-micron.

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Glycothermal Synthesis and Photocatalytic Properties of Highly Crystallized Anatase TiO<SUB>2</SUB> Nanoparticles

Cited by 20 publications

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Photocatalytic degradation of rhodamine B catalyzed by TiO₂films on a capillary column

Photocatalytic degradation of rhodamine B catalyzed by TiO₂films on a capillary column

Preparation of Mg-doped TiO2 nanoparticles for photocatalytic degradation of some organic pollutants

Facile Glycothermal Synthesis of KxNa(1−x)NbO3 Particles

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Glycothermal Synthesis and Photocatalytic Properties of Highly Crystallized Anatase TiO<SUB>2</SUB> Nanoparticles

Cited by 20 publications

References 0 publications

Photocatalytic degradation of rhodamine B catalyzed by TiO2films on a capillary column

Photocatalytic degradation of rhodamine B catalyzed by TiO2films on a capillary column

Preparation of Mg-doped TiO2 nanoparticles for photocatalytic degradation of some organic pollutants

Facile Glycothermal Synthesis of KxNa(1−x)NbO3 Particles

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Product

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Photocatalytic degradation of rhodamine B catalyzed by TiO₂films on a capillary column

Photocatalytic degradation of rhodamine B catalyzed by TiO₂films on a capillary column