Fabrication and characterization of ZnTiO3/Zn2Ti3O8/ZnO ternary photocatalyst for synergetic removal of aqueous organic pollutants and Cr(VI) ions

Chen, Fanyun; Yu, Changlin; Wei, Longfu; Fan, Qizhe; Ma, Fei; Zeng, Ju‐Lan; Yi, Junhui; Yang, Kai; Ji, Hongbing

doi:10.1016/j.scitotenv.2019.136026

Cited by 75 publications

(35 citation statements)

References 63 publications

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“…While the absorption peaks at 214 and 254 nm were not changed as compared to those of the ZT-700, the broadening and peak shifting was observed from 286 to 339 nm. This change indicated that some amounts of Zn2Ti3O8 were transformed to ZnTiO3, which was in agreement with the previous report [7]. For the ZT-1100, the band at 214 nm nearly vanished and the band at 254 nm was significantly decreased.…”

Section: Characterizations Of Zt Materialssupporting

confidence: 92%

“…On the other hand, all composites showed some weak absorption signals in the fingerprint region of 418 cm −1 as well as in the range of 545-549, 639-642, 696-708, and 837-990 cm −1 (see Figure 2(b)). The sharp band at 418 cm −1 could be assigned to the Ti−O bending vibration in [TiO6] 2− octahedral in ZT materials [7]. This was supported by the absorption signals present in a region of 900 cm −1 as well as the peaks observed in the range of 639-642 cm −1 , which corresponded to the O−Ti−O stretching vibration of [TiO6] 2− octahedral in ZT materials [17].…”

Section: Characterizations Of Zt Materialsmentioning

confidence: 61%

“…In order to increase the performance of the TiO2, modifications have been made by creating bimetallic oxides, which are attractive due to their unique properties. Combining two metal oxides could give better properties, which lead to a better photocatalytic activity, such as in the case of zirconium titanates [4] and zinc titanates [5][6][7][8][9]. Particular attention is made to the zinc titanates (ZnxTiyOz, ZT)-based materials, which have been reported as good photocatalysts for either water splitting or photocatalytic degradation of aqueous organic pollutants [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…Combining two metal oxides could give better properties, which lead to a better photocatalytic activity, such as in the case of zirconium titanates [4] and zinc titanates [5][6][7][8][9]. Particular attention is made to the zinc titanates (ZnxTiyOz, ZT)-based materials, which have been reported as good photocatalysts for either water splitting or photocatalytic degradation of aqueous organic pollutants [5][6][7][8][9]. As an example, when the Zn2Ti3O8 was combined with TiO2 in a thin film for photocatalytic hydrogen evolution, it was found that the material owing to the Zn2Ti3O8 phase yielded a remarkable photocatalytic enhancement [5].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Characterizations Of Zt Materialssupporting

confidence: 92%

Section: Characterizations Of Zt Materialsmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…This adsorbent could be recycled with an EDTA solution and reprocessed with only slightly less efficient than that of the fresh sample [108]. heterojunction which displays excellent performance for the degradation of organic pollutants as well as reduction of heavy metal Cr(VI) ions from wastewater [109]. Figure 5 schematically represent the heavy metal ion (Cd 2+ ) adsorb with LaFeO 3 perovskite prepared with the different chelating agent.…”

Section: Heavy Metals From Contaminated Watermentioning

confidence: 99%

Lead-Free Perovskite Nanocomposites: An Aspect for Environmental Application

De¹

2021

Perovskite and Piezoelectric Materials

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Perovskites possess an interesting crystal structure and its structural properties allow us to achieve various applications. Beside its ferroelectric, piezoelectric, magnetic, multiferroic, etc., properties, these branches of materials are also useful to develop materials for various environmental applications. As the population is increasing nowadays, different type of environmental pollution is one of the growing worries for society. The effort of researchers and scientists focuses on developing new materials to get rid of these individual issues. With modern advances in synthesis methods, including the preparation of perovskite nanocomposites, there is a growing interest in perovskite-type materials for environmental application. Basically, this chapter concludes with a few of the major issues in the recent environment: green energy (solar cell), fuel cell, sensors (gas and for biomedical), and remediation of heavy metals from industrial wastewater.

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Strategies to Enhance ZnO Photocatalyst's Performance for Water Treatment: A Comprehensive Review

Hezam

Drmosh

Ponnamma

et al. 2022

The Chemical Record

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Despite the photocatalytic organic pollutant degradation using ZnO started in 1910–1911, many challenges are still ahead, and several critical issues have to be addressed. Large band gap, and short life‐time of photogenerated electrons and holes are critical issues negatively affect the photocatalytic activity of ZnO. Various approaches have been introduced to overcome these issues including intrinsic doping, extrinsic doping, and heterostructure. This review introduces unique and deep insights into tuning of the photocatalytic activity of ZnO. It starts by description of how to tune the photocatalytic activity of pristine ZnO through tuning its morphology, surface area, exposed face, and intrinsic defects. Afterward, the review explains how the Z‐scheme approach succeed to address the redox weakened issue of heterojunction approach. In general, this review provides a clear image that helps the researcher to tune the photocatalytic activity of pristine ZnO and its heterostructure.

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Fabrication and characterization of ZnTiO3/Zn2Ti3O8/ZnO ternary photocatalyst for synergetic removal of aqueous organic pollutants and Cr(VI) ions

Cited by 75 publications

References 63 publications

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

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

Lead-Free Perovskite Nanocomposites: An Aspect for Environmental Application

Strategies to Enhance ZnO Photocatalyst's Performance for Water Treatment: A Comprehensive Review

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