Luminescence kinetics of low temperature nano ZnTiO3:Eu3+ red spinel under NUV excitation

Bhagyalekshmi, G. L.; Sha, A. P. Neethu; Rajendran, Deepthi N.

doi:10.1007/s10854-019-01413-x

Cited by 8 publications

(3 citation statements)

References 56 publications

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“…However, when compared to other results obtained, in which the authors opted for other methods of synthesis of zinc titanates [ 3 , 4 , 11 , 21 ], the method adopted by the present work allowed crystallization at a temperature of 500 °C, lower temperature than that obtained by the referred authors. In addition, the cubic phase of ZnTiO 3 has a spinel-like structure, considered rare in the literature and, until now, it has not been possible to obtain it with heat treatment at 500 °C and for 2 h [ 22 ] and its formation appears to be linked to the synthesis method used. The lack of information on atomic positions of this structure does not make it possible to calculate the percentage of phases by means of Rietveld analysis.…”

Section: Resultsmentioning

confidence: 99%

Properties of zinc titanates synthesized by microwave assisted hydrothermal method

Gonzales

Hartwig

Fassbender

et al. 2021

Heliyon

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Zinc titanates are compounds that have shown great application versatility, including in the field of semiconductors. Solid state reactions, the polymeric precursor method and the hydrothermal method are the most mentioned synthesis of these compounds in the literature. In the present work, we use microwave assisted hydrothermal method (MAH) to synthesize zinc titanate and evaluate its potential for solar cell applications through structural and optical characterization techniques. The synthesized samples were also subjected to a variable temperature heat treatment in the range of 500 °C–800 °C. The analysis showed that the crystallization of the material starts at 500 °C and that samples submitted to temperatures of 600 °C–800 °C showed the formation of two phases of zinc titanates, being a cubic phase of ZnTiO 3 , considered rare in the literature, predominant up to a temperature of 800 °C. The optical characterization, based on the techniques of photoluminescence spectroscopy and UV-Visible spectroscopy, showed that the photoluminescent activity and the energy of the band gap increased with the increase of the temperature of the heat treatment, having the highest response in 700 °C, facts that can be linked to the predominant formation of the cubic phase of ZnTiO 3 and simultaneous of the cubic and rhombohedral phases of ZnTiO 3 at 700 and 800 °C. Finally, we highlight as the most important results, the fact that it was possible to obtain these titanates at a temperature lower than that reported in the literature, and that the heat-treated sample at 500 °C is the one with the lowest energy expenditure to be synthesized and the one with the greatest potential for application in dye-sensitized solar cells (DSSC's).

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Section: Resultsmentioning

confidence: 99%

Properties of zinc titanates synthesized by microwave assisted hydrothermal method

Gonzales

Hartwig

Fassbender

et al. 2021

Heliyon

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show abstract

“…CD spectroscopy is used to be a convenient and precise technique, and it has been widely used to screen the changes in protein conformation based on these characteristics (Bhagyalekshmi et al., 2019). The secondary structure of the target protein was monitored by CD spectroscopy (Jahromi et al, 2020), and the effect of ginsenoside Rb 1 on the secondary structure of β‐glucosidase was analyzed.…”

Section: Resultsmentioning

confidence: 99%

Section: Conformation Changes Of β-Glucosidase Induced By Ginsenoside Rbmentioning

confidence: 99%

Spectroscopic and in silico investigation of the interaction between GH1 β‐glucosidase and ginsenoside Rb₁

Zhong

Zou

et al. 2021

Food Science & Nutrition

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The function and application of β‐glucosidase attract attention nowadays. β‐glucosidase was confirmed of transforming ginsenoside Rb1 to rare ginsenoside, but the interaction mechanism remains not clear. In this work, β‐glucosidase from GH1 family of Paenibacillus polymyxa was selected, and its gene sequence bglB was synthesized by codon. Then, recombinant plasmid was transferred into Escherichia coli BL21 (DE3) and expressed. The UV–visible spectrum showed that ginsenoside Rb1 decreased the polarity of the corresponding structure of hydrophobic aromatic amino acids (Trp) in β‐glucosidase and increased new π‐π* transition. The fluorescence quenching spectrum showed that ginsenoside Rb1 inhibited intrinsic fluorescence, formed static quenching, reduced the surface hydrophobicity of β‐glucosidase, and KSV was 8.37 × 103 L/M (298K). Circular dichroism (CD) showed that secondary structure of β‐glucosidase was changed by the binding action. Localized surface plasmon resonance (LSPR) showed that β‐glucosidase and Rb1 had strong binding power which KD value was 5.24 × 10–4 (±2.35 × 10–5) M. Molecular docking simulation evaluated the binding site, hydrophobic force, hydrogen bond, and key amino acids of β‐glucosidase with ginsenoside Rb1 in the process. Thus, this work could provide basic mechanisms of the binding and interaction between β‐glucosidase and ginsenoside Rb1.

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Dynamics of Perovskite Titanite Luminescent Materials

Mofokeng¹,

Noto²,

Mokoena³

et al. 2023

Progress in Optical Science and Photonics

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Luminescence kinetics of low temperature nano ZnTiO3:Eu3+ red spinel under NUV excitation

Cited by 8 publications

References 56 publications

Properties of zinc titanates synthesized by microwave assisted hydrothermal method

Properties of zinc titanates synthesized by microwave assisted hydrothermal method

Spectroscopic and in silico investigation of the interaction between GH1 β‐glucosidase and ginsenoside Rb₁

Dynamics of Perovskite Titanite Luminescent Materials

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Luminescence kinetics of low temperature nano ZnTiO3:Eu3+ red spinel under NUV excitation

Cited by 8 publications

References 56 publications

Properties of zinc titanates synthesized by microwave assisted hydrothermal method

Properties of zinc titanates synthesized by microwave assisted hydrothermal method

Spectroscopic and in silico investigation of the interaction between GH1 β‐glucosidase and ginsenoside Rb1

Dynamics of Perovskite Titanite Luminescent Materials

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Spectroscopic and in silico investigation of the interaction between GH1 β‐glucosidase and ginsenoside Rb₁