Promoting role of transition metal oxide on ZnTiO3–TiO2 nanocomposites for the photocatalytic activity under solar light irradiation

Ozturk, Beysim; Soylu, Gülin Selda Pozan

doi:10.1016/j.ceramint.2016.04.027

Cited by 41 publications

(11 citation statements)

References 41 publications

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“…On the other hand, in agreement with other authors [ 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 ], the clay minerals and clay-derived materials have many diverse applications including catalysis and adsorption, which are based on their unique surface properties. The evidence of this work indicates that raw clays can be valuable supports for materials used for the removal of dyes.…”

Section: Discussionsupporting

confidence: 87%

Synthesis of the ZnTiO3/TiO2 Nanocomposite Supported in Ecuadorian Clays for the Adsorption and Photocatalytic Removal of Methylene Blue Dye

et al. 2020

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Currently, the study of semiconductor materials is very promising for the photocatalytic remediation of hazardous organic substances present in the air and water. Various semiconductors have been investigated in this interesting photo-assisted methodology, among them metal oxides such as ZnO, TiO2 and their derivatives. In this study, ZnTiO3/TiO2 was synthesized by the sol-gel method using Ti(OC3H7)4 and Zn(CH3COO)2 · 2H2O as reagents. The role of several conditions such as synthesis temperature and TiO2:ZnO proportion on the morphology and purity of compounds obtained was studied, and the suitable conditions for the synthesis of photocatalysts were determined. Various techniques were used to conduct a systematic investigation on the structural, morphological, and photocatalytic properties of ZnTiO3/TiO2. Scanning Electron Microscopy (SEM) images show that ZnTiO3/TiO2 have a typical particle size of approximately 100 nm with a quasi-spherical shape. The adsorption and photocatalytic activity were investigated by the decolorization of Methylene Blue (MB) as an organic contaminant under UV irradiation both in TiO2 and ZnTiO3/TiO2 supported over some Ecuadorian clays. The materials evaluated were prepared in the shape of 0.2 cm (diameter) and 1.0 cm (length) cylindrical extrudates. The degradation percentage of MB obtained was 85% approximately after 150 min of irradiation. The results obtained allow us to conclude that these synthesized materials can be used as adsorbents and photocatalysts.

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Section: Discussionsupporting

confidence: 87%

Synthesis of the ZnTiO3/TiO2 Nanocomposite Supported in Ecuadorian Clays for the Adsorption and Photocatalytic Removal of Methylene Blue Dye

et al. 2020

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“…Over the past decade, Ti-and Zn-based oxides have received much attention due to their competitive cost, non-toxicity, excellent stability, availability, and ability to produce highly oxidizing radicals [1][2][3][4]. Titanium oxide (TiO 2 ) and zinc oxide (ZnO) are two well-known semiconductors that have been widely used to construct electron transport channels due to their appropriate bandgaps, efficient electron mobilities, and simple synthesis methods [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

DFT Study of Methylene Blue Adsorption on ZnTiO3 and TiO2 Surfaces (101)

et al. 2021

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The search for alternative materials with high dye adsorption capacity, such as methylene blue (MB), remains the focus of current studies. This computational study focuses on oxides ZnTiO3 and TiO2 (anatase phase) and on their adsorptive properties. Computational calculations based on DFT methods were performed using the Viena Ab initio Simulation Package (VASP) code to study the electronic properties of these oxides. The bandgap energy values calculated by the Hubbard U (GGA + U) method for ZnTiO3 and TiO2 were 3.17 and 3.21 eV, respectively, which are consistent with the experimental data. The most favorable orientation of the MB adsorbed on the surface (101) of both oxides is semi-perpendicular. Stronger adsorption was observed on the ZnTiO3 surface (−282.05 kJ/mol) than on TiO2 (–10.95 kJ/mol). Anchoring of the MB molecule on both surfaces was carried out by means of two protons in a bidentate chelating (BC) adsorption model. The high adsorption energy of the MB dye on the ZnTiO3 surface shows the potential value of using this mixed oxide as a dye adsorbent for several technological and environmental applications.

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“…ZnTiO 3 has wide applications such as photoluminescent materials and sorbents for the desulfurization of hot coal gases, CO and NO sensors, photocatalysis, paint pigments and also in microwave dielectric ceramics . Some articles are there regarding composite particles included ZnTiO 3 consisting of titanium dioxide coated with zinc oxide that has used to develop anti‐pulverization of titanium dioxide, utilized as a photocatalyst for organic pollutants . Recently, Titanium dioxide and titania‐based nanocomposites or heterostructure nanomaterial are of huge interest due to their nontoxicity, excellent stability, and low‐cost.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnTiO₃@TiO₂ Heterostructure Nanomaterial as a Visible light Photocatalyst

Bhagwat

Asiri³

et al. 2019

ChemistrySelect

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Here ZnTiO3@TiO2 heterostructure nanomaterial was prepared through a simple sonochemical strategy using TiO2 (P25) with zinc nitrate as a precursor and then calcined the obtained sample at 700 °C in 2h for the photocatalytic degradation of Congo red dye solution. XRD result confirms that the diffraction patterns related to the ZnTiO3 and TiO2 as heterostructure with high purity. SEM confirms that particles are irregular in shape with high agglomeration and HRTEM reveals that ZnTiO3@TiO2 is highly crystalline with a lattice spacing of 0.37 nm. The calculated band gap of as‐synthesized ZnTiO3@TiO2 heterostructure nanomaterial is found to be 3.07 eV. The photocatalytic degradation of as prepared ZnTiO3@TiO2 heterostructure was investigated for the degradation of Congo red dye by varying the effect of catalyst amount and initial dye concentration. The ZnTiO3@TiO2 heterostructure nanomaterial exhibited 96% degradation efficiency of Congo red in 4h under visible light illumination. Moreover, the photodegradation mechanism of Congo red was studied with various scavengers such as EDTA, IPA, and Benzoquinone. Further, the detection of OH radicals during photocatalytic processes was confirmed by luminescence technique using terephthalic acid (TA) as a test molecule.

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Promoting role of transition metal oxide on ZnTiO3–TiO2 nanocomposites for the photocatalytic activity under solar light irradiation

Cited by 41 publications

References 41 publications

Synthesis of the ZnTiO3/TiO2 Nanocomposite Supported in Ecuadorian Clays for the Adsorption and Photocatalytic Removal of Methylene Blue Dye

Synthesis of the ZnTiO3/TiO2 Nanocomposite Supported in Ecuadorian Clays for the Adsorption and Photocatalytic Removal of Methylene Blue Dye

DFT Study of Methylene Blue Adsorption on ZnTiO3 and TiO2 Surfaces (101)

Synthesis of ZnTiO₃@TiO₂ Heterostructure Nanomaterial as a Visible light Photocatalyst

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Promoting role of transition metal oxide on ZnTiO3–TiO2 nanocomposites for the photocatalytic activity under solar light irradiation

Cited by 41 publications

References 41 publications

Synthesis of the ZnTiO3/TiO2 Nanocomposite Supported in Ecuadorian Clays for the Adsorption and Photocatalytic Removal of Methylene Blue Dye

Synthesis of the ZnTiO3/TiO2 Nanocomposite Supported in Ecuadorian Clays for the Adsorption and Photocatalytic Removal of Methylene Blue Dye

DFT Study of Methylene Blue Adsorption on ZnTiO3 and TiO2 Surfaces (101)

Synthesis of ZnTiO3@TiO2 Heterostructure Nanomaterial as a Visible light Photocatalyst

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Synthesis of ZnTiO₃@TiO₂ Heterostructure Nanomaterial as a Visible light Photocatalyst