Efficient UV photocatalytic dye decomposition activity with cost effective solid state reaction grown Zinc Orthotitanate (Zn2TiO4) nanoparticles

Khatua, Lizina; Panda, Rakesh Kumar; Nayak, Arpan Kumar; Singh, Avanendra; Sahoo, Pratap K.; Pradhan, Debabrata; Singh, Udai P.; Das, Susanta Kumar

doi:10.1016/j.jallcom.2018.06.126

Cited by 16 publications

(5 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on these two aspects, in the present work, we investigated the influence of synthesis conditions, annealing temperature and ZnO concentration in zinc orthotitanate (Zn 2 TiO 4 ). Zn 2 TiO 4 is an inverse spinel that exhibits interesting dielectric and optical properties, making it potentially useful in electronics, photonics, and optoelectronics [8][9][10][11]. A Zn 2 TiO 4 application for photocatalysis involves light to drive chemical reactions, which can be used for environmental remediation and water purification [11].…”

Section: Introductionmentioning

confidence: 99%

Band Gap Modulation in Zn2TiO4 Spinels for Efficient UV-A Persistent Luminescence

Sharma,

Chouhan,

Sharma

2024

Applied Sciences

View full text Add to dashboard Cite

Spinels are important materials for an application in bioimaging. The key advantage with spinel-type hosts is the presence of antisite defects, which act as charge reservoirs for trapping electrons and holes at complementary defect sites. This makes them a host system similar to a molecular system. Herein, we present a systematic approach to modulating the band gap of an inverse Zn2TiO4 spinel. With a change in ZnO concentration, the absorption band at 375 nm diminishes and disappears at a ZnO:TiO2 concentration of 1.40:1.00. The band gap of the material is modified from 3.30 to 4.40 eV. The crystal structure of the sample does not change drastically as determined using X-ray diffraction and Rietveld refinement. The Zn2TiO4 emits in the UV-A region with a lifetime in the time domain of `ns’. The sample also shows persistent luminescence of at least 15 min upon excitation with 254 nm with prominent emission in the UV-A region (300–390 nm). The present results open a new avenue for the synthesis of spinel hosts where the band gap can be modified with ease. The UV emission thus observed is expected to find usage in interesting applications like photocatalysis, anti-counterfeiting, water disinfecting, etc.

show abstract

Section: Introductionmentioning

confidence: 99%

Band Gap Modulation in Zn2TiO4 Spinels for Efficient UV-A Persistent Luminescence

Sharma,

Chouhan,

Sharma

2024

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Apart from anatase and rutile phases, a ternary Zn 2 TiO 4 phase is often formed when ZnO and TiO 2 are mixed in technological processes. This phase is also photocatalyticactive [29][30][31][32][33], and it can be used in propanol [34] and acetone [35] gas sensing. ZnO/Zn 2 TiO 4 core/shell nanowires have been proposed for the photocatalytic oxidation of acetone [36].…”

Section: Introductionmentioning

confidence: 99%

Aero-TiO2 Prepared on the Basis of Networks of ZnO Tetrapods

et al. 2022

View full text Add to dashboard Cite

In this paper, new aeromaterials are proposed on the basis of titania thin films deposited using atomic layer deposition (ALD) on a sacrificial network of ZnO microtetrapods. The technology consists of two technological steps applied after ALD, namely, thermal treatment at different temperatures and etching of the sacrificial template. Two procedures are applied for etching, one of which is wet etching in a citric acid aqua solution, while the other one is etching in a hydride vapor phase epitaxy (HVPE) system with HCl and hydrogen chemicals. The morphology, composition, and crystal structure of the produced aeromaterials are investigated depending on the temperature of annealing and the sequence of the technological steps. The performed photoluminescence analysis suggests that the developed aeromaterials are potential candidates for photocatalytic applications.

show abstract

“…Zinc ortho titanate (Zn 2 TiO 4 ) is present in ZnO-TiO 2 binary systems and is one of the most stable structures of these binary oxide system. It is a typical inverse spinel photocatalyst, particularly attractive thanks to its inexpensive, non-toxicity, outstanding stability, and optical properties in UV and near-visible light (Girish et al 2018 ; Khatua et al 2018 ; Lim et al 2017 ; Purushan et al 2018 ). Due to the high photocatalytic performances of ZnO and Zn 2 TiO 4 , many researches have been devoted to the coupling of both photocatalysts, in search of associated synergistic effect (Manchala et al 2018 ; Behineh et al 2022 ).…”

Section: Introductionmentioning

confidence: 99%

ZnO-Zn2TiO4 heterostructure for highly efficient photocatalytic degradation of pharmaceuticals

Janani

Khiar

Taoufik

et al. 2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

In this study, ZnO-Zn 2 TiO 4 (ZTM) material was prepared through a novel synthesis method based on a ultrasound-assisted polyol-mediated process followed by calcination at a different temperature. Physical features of the samples were studied by using various analysis techniques including XRD, FT-IR, SEM/EDX, pH PZC , and UV–Vis DRS. Subsequently, the materials were employed as catalysts for the photocatalytic degradation of clofibric acid as a model pharmaceutical contaminant. The photocatalytic performance was evaluated under different conditions of calcination temperature, catalyst dosage, starting concentration, and initial pH of clofibric acid solution. The finding results revealed that hexagonal-tetragonal phases of ZnO-Zn 2 TiO 4 calcined at 600 °C (ZTM-600) with an average crystallite size of 97.8 Å exhibited the best degradation efficiency (99%). The primary bands characteristic of ZnO and Zn 2 TiO 4 were displayed by FT-IR analysis and the UV–visible DRS confirms the larger absorption capacity in UV–visible regions. The photogenerated electrons are the powerful reactive species involved in clofibric acid photodegradation process. This study shows a promising photocatalyst and provides new sight to rational design the facets of photocatalysis process for enhanced photocatalytic performances and effective wastewater treatment.

show abstract

Efficient UV photocatalytic dye decomposition activity with cost effective solid state reaction grown Zinc Orthotitanate (Zn2TiO4) nanoparticles

Cited by 16 publications

References 32 publications

Band Gap Modulation in Zn2TiO4 Spinels for Efficient UV-A Persistent Luminescence

Band Gap Modulation in Zn2TiO4 Spinels for Efficient UV-A Persistent Luminescence

Aero-TiO2 Prepared on the Basis of Networks of ZnO Tetrapods

ZnO-Zn2TiO4 heterostructure for highly efficient photocatalytic degradation of pharmaceuticals

Contact Info

Product

Resources

About