Preparation and characterization of spinel type Zn 2 TiO 4 nanocomposite

Mebrek, Alima; Alleg, S.; Benabdeslem, M.

doi:10.1016/j.ceramint.2018.03.153

Cited by 31 publications

(11 citation statements)

References 37 publications

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“…Fourier transform infrared spectra (FTIR) in the region of 4000-400 cm -1 , are shown in Figure 8, for the cds-Zn 2 Ti 3 O 8 (bottom) and p-ZnTiO 3 (top). As observed in these Figures, the marked bands that appear in the region from 1000-400 cm -1 are attributed to the metal-oxygen bonds [42][43][44]. In Figure 8 (bottom), corresponding to cds-ZTO, two bands are observed within the region of 750-400 cm -1 wavenumbers (711 and 509 cm -1 ) in which, the 711 cm -1 band corresponds to the Zn-O polyhedra [42], while the 509 cm -1 band can be attributed to Ti-O vibrations of the rutile TiO 2 phase mode [44].…”

Section: Ft-ir Analysissupporting

confidence: 60%

“…As observed in these Figures, the marked bands that appear in the region from 1000-400 cm -1 are attributed to the metal-oxygen bonds [42][43][44]. In Figure 8 (bottom), corresponding to cds-ZTO, two bands are observed within the region of 750-400 cm -1 wavenumbers (711 and 509 cm -1 ) in which, the 711 cm -1 band corresponds to the Zn-O polyhedra [42], while the 509 cm -1 band can be attributed to Ti-O vibrations of the rutile TiO 2 phase mode [44]. These same bands are present in p-ZTO sample, where absorption bands show up at 718 and 503 cm -1 [43].…”

Section: Ft-ir Analysissupporting

confidence: 60%

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Methanol and Triethanolamine Effect as Sacrifice Agents in the Photocatalytic Production of Hydrogen over Zinc Titanates

Pantoja-Espinoza¹,

Meléndez-Zaragoza²,

Salinas-Gutiérrez³

et al. 2021

Prime Archives in Chemistry

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Section: Ft-ir Analysissupporting

confidence: 60%

Section: Ft-ir Analysissupporting

confidence: 60%

Methanol and Triethanolamine Effect as Sacrifice Agents in the Photocatalytic Production of Hydrogen over Zinc Titanates

Pantoja-Espinoza¹,

Meléndez-Zaragoza²,

Salinas-Gutiérrez³

et al. 2021

Prime Archives in Chemistry

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“…The bandgap energy values of each ZT material and other reported values for zinc titanates and rutile TiO2 are summarized in Table 1. According to the reported literature, the bandgap value of c-Zn2Ti3O8 would be in the range of 3.20-3.50 eV [5,6], for spl-Zn2Ti3O8 in the range of 3.56 eV or higher [8,24], for c-Zn2TiO4 would be in the range of 3.22-3.45 eV [25], while for rutile TiO2 in the range of 3.00-3.20 eV [26,27]. Therefore, it can be proposed here that the ZT-700 would ( ) ( )…”

Section: Characterizations Of Zt Materialsmentioning

confidence: 97%

Effect of Calcination Temperature on the Photocatalytic Activity of Zn2Ti3O8 Materials for Phenol Photodegradation

Priyangga

Kurniawan

Yuliati

2021

Bull. Chem. React. Eng. Catal.

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Zinc titanate (Zn2Ti3O8) is a bimetal oxide material that is especially attractive as a photocatalyst. In the preparation of the Zn2Ti3O8, the calcination temperature is a crucial parameter. Hence, in the present work, we aimed to synthesize the Zn2Ti3O8 materials from zinc(II) nitrate and titanium(IV) isopropoxide as precursors by using a sol-gel method and followed by calcination at 700, 900, and 1100 °C to give ZT-700, ZT-900, and ZT-100 materials, respectively. The ZT materials were characterized using Fourier transform infrared (FTIR), diffuse reflectance ultraviolet-visible (DR UV-vis), and fluorescence spectroscopies. It was confirmed that the ZT materials contained O−Ti−O, Zn−O−Ti, Zn−O, Ti−O−Ti, and Ti−O functional groups as shown from their FTIR spectra. Similar fluorescence properties were only observed on the ZT-700 and ZT-900. From the bandgap energy analysis, ZT-700 and ZT-900 contained spinel and cubic Zn2Ti3O8 (spl-Zn2Ti3O8 and c-Zn2Ti3O8) crystal phases), while ZT-1100 contained c-Zn2TiO4 and TiO2 rutile crystal phases. The kinetic analysis of photocatalytic phenol degradation showed that both ZT-700 and ZT-900 materials exhibited high photocatalytic activity with the reaction rate constants of 0.0353 and 0.0355 h−1, respectively. These values were higher than that of the ZT-1100 (0.0206 h−1). This study demonstrated that calcination at 700 and 900 °C resulted in the formation of the spl-Zn2Ti3O8 and c-Zn2Ti3O8 phases, which were effective as the photocatalyst, but the formation of c-Zn2TiO4 and rutile TiO2 at calcination of 1100 °C deteriorated the photocatalytic activity. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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“…Moreover, how mechanical energy is transformed into chemical energy is a question that remains unclear [4,24]. Most published works pay very little attention to the effect of milling conditions on the resulting products and a large number of published papers lack a detailed description of the experimental conditions employed, thereby making very difficult the reproduction of results from lab to lab or its scale up [25][26][27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Unveiling mechanochemistry: Kinematic-kinetic approach for the prediction of mechanically induced reactions

Gil‐González

Rodríguez-Laguna

Jiménez

et al. 2021

Journal of Alloys and Compounds

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Mechanochemistry has attracted a lot of attention over the last few decades with a rapid growth in the number of publications due to its unique features. However, very little is known about how mechanical energy is converted into chemical energy. Most of the published works using mechanochemistry neglect the required attention to the experimental parameters and their effect over the resulting products, what makes extremely difficult to reproduce the results from lab to lab. Moreover, if it is taken into consideration the broad range of experimental conditions used in different studies, it is quite difficult to compare results and set optimum conditions. As a result, mechanochemistry is generally viewed as a "black box". The aim of this work is to provide some insight into mechanochemistry. Thus, a simple kinematic-kinetic approach that allows the full parametrization of mechanically induced reactions is proposed. In an analogous way to thermally activated process, it is shown that kinetic modeling can serve to parametrize and model mechanically induced reactions as a function of the milling parameters with great reliability, thereby gaining prediction capability. As a way of example, this methodology has been applied for the first time to the mechanochemical reaction of Co and Sb to form CoSb3, a skutterudite-type thermoelectric material. Moreover, the universality of this methodology has also been validated with data from the literature. A key feature of the proposed kinematickinetic approach is that it can be extrapolated to other mechanically induced reactions, either inorganic or organic.

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Preparation and characterization of spinel type Zn 2 TiO 4 nanocomposite

Cited by 31 publications

References 37 publications

Methanol and Triethanolamine Effect as Sacrifice Agents in the Photocatalytic Production of Hydrogen over Zinc Titanates

Methanol and Triethanolamine Effect as Sacrifice Agents in the Photocatalytic Production of Hydrogen over Zinc Titanates

Effect of Calcination Temperature on the Photocatalytic Activity of Zn2Ti3O8 Materials for Phenol Photodegradation

Unveiling mechanochemistry: Kinematic-kinetic approach for the prediction of mechanically induced reactions

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