Photocatalytic Evaluation of Anatase TiO<sub>2</sub> Coating on Ceramic Tiles by Raman Spectroscopy

Medda, Samar Kumar; Manna, Srikrishna; De, Goutam

doi:10.1080/0371750x.2019.1696233

Cited by 7 publications

(3 citation statements)

References 23 publications

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“…Figure 3 shows the Raman spectra of the TiO2 films these spectrums present vibrational modes at Eg (144 cm -1 , 197 cm -1 , and 638 cm -1 ), B1g (399 cm -1 and 519 cm -1 ), A1g (519 cm -1 ) confirming the presence of TiO2 anatase phase [9], with the increase of temperature the vibrational modes increase their intensity. The vibrational mode with the highest intensity is Eg(144 cm -1 ) which is related to a particle size smaller than 40 nm and is confirmed by the calculated grain size of the preferential plane (101) [10]. The B1g modes correspond to the vibration of titanium atoms and the A1g mode to the vibrations of oxygen atoms, the peak at 519 cm-1 is superimposed with the B1g(2) mode so the increase of A1g + B1g is due to the oxygen vacancies [11].…”

Section: Resultssupporting

confidence: 55%

Electrical properties of TiO₂ films synthetized by sol-gel process

Argüelles-Lucho,

Pérez-Cuapio,

Montes de Oca-Mora

et al. 2024

J. Phys.: Conf. Ser.

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Titanium oxide (TiO2) is one of the most used metal oxides for its multiple applications due to its high sensitivity, fast response, low cost, no toxicity and used in hostile environments. In this work was deposited TiO2 film on 304 stainless steel substrates using the spin coating technique. The synthesis of the deposited solution was with the sol-gel method a temperature environment, obtained TiO2 films on different thermal treatments. The results of the experiment show film: with a thickness from 0.6 to 1μm, anatase phase at the plane (101). The Raman spectroscopy confirms the TiO2 anatase phase. The resistivity decreases, and conductivity increases with increasing temperature. The micrograph SEM observes a compact and smooth homogeneous surface with an average size of 18.40nm to 7nm.

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Section: Resultssupporting

confidence: 55%

Electrical properties of TiO₂ films synthetized by sol-gel process

Argüelles-Lucho,

Pérez-Cuapio,

Montes de Oca-Mora

et al. 2024

J. Phys.: Conf. Ser.

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“…Recently, pollution, especially organic dyes afecting water resources, has become quite serious. With the background of energy utilization and environmental protection, the photo-degradation of organic pollutants has been actively studied (Medda et al, 2020;Cheng et al, 2021a;Wang et al, 2021a). To reduce the pressure on the environment caused by organic pollutants, many processes including ozone-oxidation method, photo-degradation method, activated-carbon adsorption method, and so on have been designed to degrade the organic pollutants (Caballero-Espitia et al, 2020;Wang et al, 2021b;Wang et al, 2021c).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Fibrous Micro-nano Hierarchical Porous Cerium Dioxide Materials by the Impregnation and Thermal Decomposition Method and Its Enhanced Photocatalytic Activity

Zhang

Chen

et al. 2022

Front. Mater.

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Fibrous micro-nano hierarchical porous cerium dioxide materials were prepared from oriental paperbush flower stems by impregnation and thermal decomposition methods. Thermogravimetric analyzer (TG, DSC), field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), N2 adsorption-desorption isothermals, temperature-programmed reduction (TPR), and UV-Vis spectrophotometer were used to characterize the thermal decomposition behavior, microstructure and photocatalytic properties of fibrous micro-nano hierarchical porous cerium dioxide materials. The results proved that the achieved products retained a fibrous morphology similar to oriental paperbush flower stems with the original biotemplate in material completely removed. The average diameter of CeO2 particles on the surface of the material is about 9 nm, and the large specific surface area is around 55.6 m2/g. UV-Vis absorption spectra showed that the fibrous micro-nano hierarchical porous cerium dioxide materials have high light absorption capacity and can respond to simulated sunlight. The effects of initial dye concentration, catalyst concentration, pH value, cycle number, and irradiation time on the photocatalytic activity of fibrous micro-nano hierarchical porous cerium dioxide materials for the photo-degradation of methylene blue under simulated solar irradiation were systematically studied. A reasonable photocatalytic mechanism is proposed based on the experimental results and theoretical analysis. This strategy can be extended to synthesize other broad bandgap semiconductor oxides with high photocatalytic activity for the photo-degradation of organic dyes under simulated solar irradiation.

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“…[23][24][25]. Doping with carbon nanostructures leads to the formation of interfacial heterostructural transitions, an increase in interphase boundaries, as well as conductivity, which has a significant effect on the photocatalytic properties of ceramics [26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Phase Transformations and Photocatalytic Activity of Nanostructured Y2O3/TiO2-Y2TiO5 Ceramic Such as Doped with Carbon Nanotubes

et al. 2020

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This work is devoted to the study of phase transition processes in nanostructured ceramics of the Y2O3/TiO2-Y2TiO5 type doped with carbon nanotubes as a result of thermal annealing, as well as to the assessment of the prospects of the effect of phase composition on photocatalytic activity. By the method of X-ray phase analysis, it was found that an increase in the annealing temperature leads to the formation of the orthorhombic phase Y2TiO5, as well as structural ordering. Based on the obtained UV spectra, the band gap was calculated, which varies from 2.9 eV (initial sample) to 2.1 eV (annealed at a temperature of 1000 °C). During photocatalytic tests, it was established that the synthesized nanostructured ceramics Y2O3/TiO2-Y2TiO5 doped CNTs show a fairly good photocatalytic activity in the range of 60–90% decomposition of methyl orange.

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Photocatalytic Evaluation of Anatase TiO₂ Coating on Ceramic Tiles by Raman Spectroscopy

Cited by 7 publications

References 23 publications

Electrical properties of TiO₂ films synthetized by sol-gel process

Electrical properties of TiO₂ films synthetized by sol-gel process

Synthesis of Fibrous Micro-nano Hierarchical Porous Cerium Dioxide Materials by the Impregnation and Thermal Decomposition Method and Its Enhanced Photocatalytic Activity

Phase Transformations and Photocatalytic Activity of Nanostructured Y2O3/TiO2-Y2TiO5 Ceramic Such as Doped with Carbon Nanotubes

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Photocatalytic Evaluation of Anatase TiO2 Coating on Ceramic Tiles by Raman Spectroscopy

Cited by 7 publications

References 23 publications

Electrical properties of TiO2 films synthetized by sol-gel process

Electrical properties of TiO2 films synthetized by sol-gel process

Synthesis of Fibrous Micro-nano Hierarchical Porous Cerium Dioxide Materials by the Impregnation and Thermal Decomposition Method and Its Enhanced Photocatalytic Activity

Phase Transformations and Photocatalytic Activity of Nanostructured Y2O3/TiO2-Y2TiO5 Ceramic Such as Doped with Carbon Nanotubes

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Photocatalytic Evaluation of Anatase TiO₂ Coating on Ceramic Tiles by Raman Spectroscopy

Electrical properties of TiO₂ films synthetized by sol-gel process

Electrical properties of TiO₂ films synthetized by sol-gel process