Electrospinning amorphous SiO2-TiO2 and TiO2 nanofibers using sol-gel chemistry and its thermal conversion into anatase and rutile

Fei Huang, Behrooz Motealleh, Wenjian Zheng, Matthew T. Janish, C. Barry Carter, Christopher J Cornelius

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

SiO2-TiO2 nanofibers were electrospun from partially hydrolyzed tetraethyl orthosilicate, and titanium isopropoxide using sol-gel chemistry. SiO2-TiO2 sol phase diagrams were created summarizing the role of composition on solution homogeneity and electrospinnability. Inorganic nanofiber spinnability was studied without the addition of any organic polymer, oligomer, gelator, or binder. TiO2 concentration within SiO2-TiO2 fibers ranged from 25 to 100 mol%. SiO2, SiO2-TiO2, and TiO2 nanofiber structures were investigated using scanning electron microscopy and transmission electron microscopy. Inorganic fiber spinning was highly dependent on sol reaction temperature, time, and solution composition. At high TiO2 concentrations, twisted and ribbon-like nanofibers with dumbbell-shaped cross-sections were observed. This was attributed to jet branching and splitting during electrospinning. Electrospun fibers were amorphous at room temperature, but thermally converted into crystalline anatase, which underwent additional structural changes at higher temperatures into rutile. This anatase-rutile thermal phase transformation was highly dependent upon TiO2 concentration. Nanofiber composition, thermal stability, and crystalline structures were characterized by energy-dispersive X-ray spectroscopy; Fourier transform infrared spectroscopy, thermal gravimetric analysis, and wide-angle X-ray diffraction.

Original languageEnglish (US)
Pages (from-to)4577-4585
Number of pages9
JournalCeramics International
Volume44
Issue number5
DOIs
StatePublished - Apr 1 2018

Fingerprint

Electrospinning
Nanofibers
Titanium dioxide
Sol-gels
Polymethyl Methacrylate
Sols
Fibers
Chemical analysis
Crystalline materials
Organic polymers
Gravimetric analysis
Oligomers
Temperature
Phase diagrams
Binders
Fourier transform infrared spectroscopy
Thermodynamic stability
Titanium
Phase transitions
Hot Temperature

Keywords

  • Inorganic sol electrospinning
  • Nanocomposite fibers
  • SiO-TiO phase diagram
  • Sol-gel chemistry

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Electrospinning amorphous SiO2-TiO2 and TiO2 nanofibers using sol-gel chemistry and its thermal conversion into anatase and rutile. / Huang, Fei; Motealleh, Behrooz; Zheng, Wenjian; Janish, Matthew T.; Carter, C. Barry; Cornelius, Christopher J.

In: Ceramics International, Vol. 44, No. 5, 01.04.2018, p. 4577-4585.

Research output: Contribution to journalArticle

Huang, Fei ; Motealleh, Behrooz ; Zheng, Wenjian ; Janish, Matthew T. ; Carter, C. Barry ; Cornelius, Christopher J. / Electrospinning amorphous SiO2-TiO2 and TiO2 nanofibers using sol-gel chemistry and its thermal conversion into anatase and rutile. In: Ceramics International. 2018 ; Vol. 44, No. 5. pp. 4577-4585.
@article{a94f4465ef10438284c5fdf9bd93ca99,
title = "Electrospinning amorphous SiO2-TiO2 and TiO2 nanofibers using sol-gel chemistry and its thermal conversion into anatase and rutile",
abstract = "SiO2-TiO2 nanofibers were electrospun from partially hydrolyzed tetraethyl orthosilicate, and titanium isopropoxide using sol-gel chemistry. SiO2-TiO2 sol phase diagrams were created summarizing the role of composition on solution homogeneity and electrospinnability. Inorganic nanofiber spinnability was studied without the addition of any organic polymer, oligomer, gelator, or binder. TiO2 concentration within SiO2-TiO2 fibers ranged from 25 to 100 mol{\%}. SiO2, SiO2-TiO2, and TiO2 nanofiber structures were investigated using scanning electron microscopy and transmission electron microscopy. Inorganic fiber spinning was highly dependent on sol reaction temperature, time, and solution composition. At high TiO2 concentrations, twisted and ribbon-like nanofibers with dumbbell-shaped cross-sections were observed. This was attributed to jet branching and splitting during electrospinning. Electrospun fibers were amorphous at room temperature, but thermally converted into crystalline anatase, which underwent additional structural changes at higher temperatures into rutile. This anatase-rutile thermal phase transformation was highly dependent upon TiO2 concentration. Nanofiber composition, thermal stability, and crystalline structures were characterized by energy-dispersive X-ray spectroscopy; Fourier transform infrared spectroscopy, thermal gravimetric analysis, and wide-angle X-ray diffraction.",
keywords = "Inorganic sol electrospinning, Nanocomposite fibers, SiO-TiO phase diagram, Sol-gel chemistry",
author = "Fei Huang and Behrooz Motealleh and Wenjian Zheng and Janish, {Matthew T.} and Carter, {C. Barry} and Cornelius, {Christopher J}",
year = "2018",
month = "4",
day = "1",
doi = "10.1016/j.ceramint.2017.10.134",
language = "English (US)",
volume = "44",
pages = "4577--4585",
journal = "Ceramics International",
issn = "0272-8842",
publisher = "Elsevier Limited",
number = "5",

}

TY - JOUR

T1 - Electrospinning amorphous SiO2-TiO2 and TiO2 nanofibers using sol-gel chemistry and its thermal conversion into anatase and rutile

AU - Huang, Fei

AU - Motealleh, Behrooz

AU - Zheng, Wenjian

AU - Janish, Matthew T.

AU - Carter, C. Barry

AU - Cornelius, Christopher J

PY - 2018/4/1

Y1 - 2018/4/1

N2 - SiO2-TiO2 nanofibers were electrospun from partially hydrolyzed tetraethyl orthosilicate, and titanium isopropoxide using sol-gel chemistry. SiO2-TiO2 sol phase diagrams were created summarizing the role of composition on solution homogeneity and electrospinnability. Inorganic nanofiber spinnability was studied without the addition of any organic polymer, oligomer, gelator, or binder. TiO2 concentration within SiO2-TiO2 fibers ranged from 25 to 100 mol%. SiO2, SiO2-TiO2, and TiO2 nanofiber structures were investigated using scanning electron microscopy and transmission electron microscopy. Inorganic fiber spinning was highly dependent on sol reaction temperature, time, and solution composition. At high TiO2 concentrations, twisted and ribbon-like nanofibers with dumbbell-shaped cross-sections were observed. This was attributed to jet branching and splitting during electrospinning. Electrospun fibers were amorphous at room temperature, but thermally converted into crystalline anatase, which underwent additional structural changes at higher temperatures into rutile. This anatase-rutile thermal phase transformation was highly dependent upon TiO2 concentration. Nanofiber composition, thermal stability, and crystalline structures were characterized by energy-dispersive X-ray spectroscopy; Fourier transform infrared spectroscopy, thermal gravimetric analysis, and wide-angle X-ray diffraction.

AB - SiO2-TiO2 nanofibers were electrospun from partially hydrolyzed tetraethyl orthosilicate, and titanium isopropoxide using sol-gel chemistry. SiO2-TiO2 sol phase diagrams were created summarizing the role of composition on solution homogeneity and electrospinnability. Inorganic nanofiber spinnability was studied without the addition of any organic polymer, oligomer, gelator, or binder. TiO2 concentration within SiO2-TiO2 fibers ranged from 25 to 100 mol%. SiO2, SiO2-TiO2, and TiO2 nanofiber structures were investigated using scanning electron microscopy and transmission electron microscopy. Inorganic fiber spinning was highly dependent on sol reaction temperature, time, and solution composition. At high TiO2 concentrations, twisted and ribbon-like nanofibers with dumbbell-shaped cross-sections were observed. This was attributed to jet branching and splitting during electrospinning. Electrospun fibers were amorphous at room temperature, but thermally converted into crystalline anatase, which underwent additional structural changes at higher temperatures into rutile. This anatase-rutile thermal phase transformation was highly dependent upon TiO2 concentration. Nanofiber composition, thermal stability, and crystalline structures were characterized by energy-dispersive X-ray spectroscopy; Fourier transform infrared spectroscopy, thermal gravimetric analysis, and wide-angle X-ray diffraction.

KW - Inorganic sol electrospinning

KW - Nanocomposite fibers

KW - SiO-TiO phase diagram

KW - Sol-gel chemistry

UR - http://www.scopus.com/inward/record.url?scp=85039708246&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85039708246&partnerID=8YFLogxK

U2 - 10.1016/j.ceramint.2017.10.134

DO - 10.1016/j.ceramint.2017.10.134

M3 - Article

AN - SCOPUS:85039708246

VL - 44

SP - 4577

EP - 4585

JO - Ceramics International

JF - Ceramics International

SN - 0272-8842

IS - 5

ER -