Excellent flexibility of high-temperature-treated SiO2-TiO2 hybrid fibres and their enhanced luminescence with Eu3+ doping

Li, Jianjun; Wu, Yanfeng; Cao, Jungang; Wei, Zhonglin; Guo, Ying; Wang, Qun; Peng, Qingyu; Li, Yibin; He, Xiaodong

doi:10.1016/j.ceramint.2017.06.155

Cited by 12 publications

(15 citation statements)

References 34 publications

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“…In particular aluminum doping has demonstrated to retard the anatase to rutile transition, as well as to improve the TiO 2 sensing response to different gases or efficiency of dye‐sensitized solar cells . TiO 2 nanostructures have been successfully synthesized by different methods so far, like sol‐gel, hydrothermal, chemical vapor deposition (CVD), pulsed laser deposition (PLD), vapor–liquid–solid (VLS), cathodic anodization, or electrospinning technique . In particular, the growth of TiO 2 elongated structures by means of the vapor–solid (VS) method using TiO 2 as precursor is complicated due to the high melting point of TiO 2 (1840 °C), which hinders the achievement of the conditions necessary for their growth .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of TiO₂ Micro‐ and Nano‐Structures with Variable Morphology and Aluminum Content

Vásquez

Taeño

Maestre

et al. 2018

Physica Status Solidi (a)

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Achieving a high surface to volume ratio is of advantage in many applications of semiconducting oxides, which can be obtained by reducing the size of the material toward the nanoscale. Beside size reduction, morphology variability and doping content could also induce differences in the luminescence of structures in the micro‐ and nano‐scale widening their applicability. Elongated rutile TiO2 nano‐ and micro‐structures are fabricated by an evaporation‐deposition method using TiN as precursor at temperatures ranging from 800 to 900 °C. Aluminum doped TiO2 micro‐ and nano‐structures are also grown at 940 °C. The presence of Al hinders the growth of structures and retards the anatase to rutile transition. The as‐grown low dimensional structures are characterized by X‐ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, and cathodoluminescence (CL). The luminescence of the samples depends on the size, morphology, and aluminum content and is mainly dominated by an emission at 1.52 eV and weaker emissions at 2.45 and 2.9 eV, the origin of which is discussed in this work.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of TiO₂ Micro‐ and Nano‐Structures with Variable Morphology and Aluminum Content

Vásquez

Taeño

Maestre

et al. 2018

Physica Status Solidi (a)

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“…However, doping of TiO 2 materials causes the increase of calcination temperature to the formation of crystalline TiO 2 . Researchers have studied different metal oxides and reached anatase to rutile phase transformation at higher temperatures. ,, Li et al studied hybrid SiO 2 and TiO 2 nanofiber calcined at 600 °C, and they did not reach the crystalline TiO 2 . In another study, Vieira et al synthesized CeO 2 -doped TiO 2 photocatalysts and reported that the increase in calcination temperature did not cause the change of the crystallinity of the material .…”

Section: Resultsmentioning

confidence: 99%

“… 14 , 30 , 65 Li et al studied hybrid SiO 2 and TiO 2 nanofiber calcined at 600 °C, and they did not reach the crystalline TiO 2 . 30 In another study, Vieira et al synthesized CeO 2 -doped TiO 2 photocatalysts and reported that the increase in calcination temperature did not cause the change of the crystallinity of the material. 65 The transformation of the anatase to rutile phase was inhibited in the Ce-doped TiO 2 materials after heat treatment even at 600 °C.…”

Section: Resultsmentioning

confidence: 99%

“…Doping of SiO 2 to the nanofiber structure causes delay in the anatase to rutile phase transformation for TiO 2 , even at high calcination temperatures. 30 − 32 …”

Section: Introductionmentioning

confidence: 99%

“… 44 Frontera et al produced nickel, niobium, and tantalum-doped TiO 2 with a high surface area by the sol–gel and electrospinning process to investigate the crystalline structure. 45 Moreover, nanocomposites such as TiO 2 –Er, 46 , 47 TiO 2 –SiO 2 , 15 , 32 , 41 Eu 3+ -doped TiO 2 –SiO 2 , 30 TiO 2 –CeO 2 , 23 Li–TiO 2 , 48 TiO 2 –Ca, 29 , 48 Fe 2 O 3 –TiO 2 , 49 and TiO 2 /g-C 3 N 50 were produced from sol–gel and polymer mixture using the electrospinning method and calcination processes.…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic and Antimicrobial Properties of Electrospun TiO₂–SiO₂–Al₂O₃–ZrO₂–CaO–CeO₂ Ceramic Membranes

Soylu

Dikmetaş

et al. 2023

ACS Omega

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In this study, TiO 2 -based ceramic nanofiber membranes in the system of TiO 2 −SiO 2 −Al 2 O 3 −ZrO 2 −CaO− CeO 2 were synthesized by combining sol−gel and electrospinning processes. In order to investigate the thermal treatment temperature effect, the obtained nanofiber membranes were calcined at different temperatures ranging from 550 to 850 °C. Different characterization methods such as X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR), and high-resolution transmission electron microscopy (HR-TEM) were conducted on the obtained membranes to investigate the structural and morphological properties of the nanofibers. The Brunauer−Emmett−Teller surface area of the nanofiber membranes was very high (46.6−149.2 m 2 /g) and decreased with increasing calcination temperature as expected. Photocatalytic activity investigations were determined using methylene blue (MB) as a model dye under UV and sunlight irradiation. High degradation performances were achieved with the calcination temperatures of 650 and 750 °C because of the high specific surface area and the anatase structure of the nanofiber membranes. Moreover, the ceramic membranes showed antibacterial activity against Escherichia coli as a Gram-negative bacterium and Staphylococcus aureus as a Gram-positive bacterium. The superior properties of the novel TiO 2 -based multi-oxide nanofiber membranes proved as a promising candidate for various industries, especially the removal of textile dyes from wastewater.

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Review of electrospinning technology of photocatalysis, electrocatalysis and magnetic response

Jianxin,

Hengzhe,

Xuedi

et al. 2024

J Mater Sci

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Excellent flexibility of high-temperature-treated SiO2-TiO2 hybrid fibres and their enhanced luminescence with Eu3+ doping

Cited by 12 publications

References 34 publications

Synthesis and Characterization of TiO₂ Micro‐ and Nano‐Structures with Variable Morphology and Aluminum Content

Synthesis and Characterization of TiO₂ Micro‐ and Nano‐Structures with Variable Morphology and Aluminum Content

Photocatalytic and Antimicrobial Properties of Electrospun TiO₂–SiO₂–Al₂O₃–ZrO₂–CaO–CeO₂ Ceramic Membranes

Review of electrospinning technology of photocatalysis, electrocatalysis and magnetic response

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Excellent flexibility of high-temperature-treated SiO2-TiO2 hybrid fibres and their enhanced luminescence with Eu3+ doping

Cited by 12 publications

References 34 publications

Synthesis and Characterization of TiO2 Micro‐ and Nano‐Structures with Variable Morphology and Aluminum Content

Synthesis and Characterization of TiO2 Micro‐ and Nano‐Structures with Variable Morphology and Aluminum Content

Photocatalytic and Antimicrobial Properties of Electrospun TiO2–SiO2–Al2O3–ZrO2–CaO–CeO2 Ceramic Membranes

Review of electrospinning technology of photocatalysis, electrocatalysis and magnetic response

Contact Info

Product

Resources

About

Synthesis and Characterization of TiO₂ Micro‐ and Nano‐Structures with Variable Morphology and Aluminum Content

Synthesis and Characterization of TiO₂ Micro‐ and Nano‐Structures with Variable Morphology and Aluminum Content

Photocatalytic and Antimicrobial Properties of Electrospun TiO₂–SiO₂–Al₂O₃–ZrO₂–CaO–CeO₂ Ceramic Membranes