Influence of high-energy ball milling on structural, microstructural, and optical properties of Mg2TiO4 nanoparticles

Bhuyan, Rashmi; Mohapatra, Ranjan K.; Nath, G.; Sahoo, B. K.; Das, Dillip Kumar; Pamu, D.

doi:10.1007/s10854-019-02568-3

Cited by 17 publications

(4 citation statements)

References 27 publications

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“…Previous study suggested that pristine Mg 2 TiO 4 is a wide band gap semiconductor with band gap larger than 3.7 eV [31] . This can be inferred from the white color of Mg 2 TiO 4 powders.…”

Section: Resultsmentioning

confidence: 97%

Mg2TiO4 spinel modified by nitrogen doping as a Visible-Light-Active photocatalyst for antibacterial activity

Chang

Qian

et al. 2021

Chemical Engineering Journal

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“…Previous study suggested that pristine Mg 2 TiO 4 is a wide band gap semiconductor with band gap larger than 3.7 eV [31] . This can be inferred from the white color of Mg 2 TiO 4 powders.…”

Section: Resultsmentioning

confidence: 97%

Mg2TiO4 spinel modified by nitrogen doping as a Visible-Light-Active photocatalyst for antibacterial activity

Chang

Qian

et al. 2021

Chemical Engineering Journal

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“…The difference is mainly because Scherrer's equation may not account for the lattice strain effect on the peak broadening. 39 Calculated dislocation densities are 10 × 10 −4 nm −2 and 17 × 10 −4 nm −2 for ZnO, respectively. Estimated micro-strainsare 3.61 × 10 −3 and 4.60 × 10 −3 according to Scherrer's method, 0.89 × 10 −3 and 1.13 × 10 −3 according to the W-H method, and 3.57 × 10 −3 and 45.4 × 10 −3 according to H-W method for ZnO and HZO, respectively.…”

Section: Whmentioning

confidence: 92%

Impedance Spectroscopy and Structural Characterization of Nanostructured ZnO and Hf-Doped ZnO Ceramics

Seçkin¹,

Koralay²,

Çavdar³

et al. 2022

ECS J. Solid State Sci. Technol.

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Nanostructured zinc oxide (ZnO) and hafnium-doped zinc oxide ceramic samples were prepared by the sol-gel technique. ZnO and %0.5 hafnium-doped ZnO (HZO) nanostructures and their surface morphologies were studied by X-ray diffraction and field-emission scanning electron microscopy. AC electrical properties (capacitance, conductance, and complex impedance) of ZnO and HZO were studied by impedance analyzer with the frequency range from 20 Hz to 1.5 MHz and temperature range from 300 to 500 K. General analysis of AC electrical measurements showed that both samples had different equivalent circuit diagrams. The best-fitted equivalent circuit diagram for ZnO was "R(RC)(RC)" at all temperatures. The circuit diagram for HZO was "R(RCPE)" at 300, 350, and 400 K temperatures and "R(RCPE)(RCPE)" at 450 and 500 K temperatures. Negative temperature coefficient of resistance (NTCR), non-Debye behavior, and multiple relaxation times were observed.

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“…Nitrogen-doped Mg 2 TiO 4 spinel has been synthesized and investigated as a photocatalyst for antibacterial activity [3]. Impacts of mechanical activation on structural, microstructural, thermal, and optical properties of Mg 2 TiO 4 nano-ceramics prepared by high-energy ball milling and mechanical alloying method were reported [14] and exhibited promising optical properties which are suitable for commercial optoelectronic applications. Also, the dielectric properties and AC electrical conductivity of Mg 2 TiO 4 ceramics synthesized via high-energy ball milling process have been studied [15] and promising this material for commercial technological applications.…”

Section: Introductionmentioning

confidence: 99%

Crystallization and electrical measurements of sintered qandilite (Mg2TiO4)-borosilicate glass composite

2023

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Qandilite Mg2TiO4 ceramic was prepared from MgO-TiO2 powder/borosilicate glass composite. Composite materials were prepared by nominal MgTiO3 alone and with 10, 30, and 50% borosilicate glass. The sintering process resulted in qandilite alone either in nominal Mg2TiO4 alone or with 10% glass. Incorporation of 30% and 50% glass gave crystalline magnesium titanate (MgTi2O5) in both sintered samples with either forsterite (Mg2SiO4) in 30% containing glass or rutile (TiO2) and enstatite (MgSiO3) in 50% containing glass. The microstructure of sintered samples presented clear tetragonal or octahedral which referred to qandilite in the case of nominal MgTiO3 alone or that containing 10% glass. Also, the later crystals appeared in the case of 70% glass-containing samples whereas in the case of 50% containing glass, in addition to the later clear crystals, rod-like crystals were embedded in glassy matrix. The dielectric constant of the studied composite samples was decreased with increasing the glass fraction until 30 wt%, and then increased to lead to the highest values of dielectric constant (⁓125 at room temperature and 1 kHz) at a glass fraction of 50 wt%. The activation energy (Ea) attained values in the range 0.145–0.438 eV. The results of Ea values and AC conductivity may indicate the dominance of electronic mechanism over the ionic transfer one in the studied sample. The prepared composite samples exhibited a semiconducting nature.

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Influence of high-energy ball milling on structural, microstructural, and optical properties of Mg2TiO4 nanoparticles

Cited by 17 publications

References 27 publications

Mg2TiO4 spinel modified by nitrogen doping as a Visible-Light-Active photocatalyst for antibacterial activity

Mg2TiO4 spinel modified by nitrogen doping as a Visible-Light-Active photocatalyst for antibacterial activity

Impedance Spectroscopy and Structural Characterization of Nanostructured ZnO and Hf-Doped ZnO Ceramics

Crystallization and electrical measurements of sintered qandilite (Mg2TiO4)-borosilicate glass composite

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