Electrospinning preparation and microstructure characterization of homogeneous diphasic mullite ceramic nanofibers
Source abstract
Abstract
Abstract In this work, diphasic mullite (3Al2O3·2SiO2) nanofibers with good homogeneity were prepared by electrospinning method. Aluminum nitrate (AN) and aluminum isopropoxide (AIP) were used as alumina sources, commercial colloidal silica as silica source, and polyvinyl alcohol (PVA) as polymer additive. Precursor nanofibers with continuous and uniform structures were acquired at mass ratio of PVA to precursor sol from 0.06 to 0.09. γ-Al2O3 phase was obtained at 878 °C and mullite phase formed at 1322 °C upon heating of the precursor under air atmosphere. Calcined samples suggested mullite as dominant phase at 1300 °C and amorphous SiO2 could even exist at 1400 °C. As-prepared nanofibers possessed continuous structures with subequal average diameters at 900–1200 °C. However, such morphological characteristics were lost at temperatures above 1300 °C due to rapid growth of crystal grains. Al and Si elements were uniformly distributed in fibers and mixed at nanoscale, confirming homogeneity and diphasic features of nanofibers.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Electrospun Nanofibers in Biomedical Applications · MXene and MAX Phase Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (31)
Show source-provided references
1. Electrospun flexible self-standing Cu-Al2O3 fibrous membranes as Fenton catalysts for bisphenol A degradation10.1039/C7TA04386D ↗
2. Fabrication of electrospun Al2O3 fibers with CaO-SiO2 additive10.1016/j.matlet.2012.09.077 ↗
3. A new route of alumina template modification into dense-packed fibrilous material10.1016/j.matlet.2006.10.013 ↗
4. γ-Alumina nanofibers prepared from aluminum hydrate with poly(ethylene oxide) surfactant10.1021/cm010736a ↗
5. Solid-based hydrothermal synthesis and characterization of alumina nanofibers with controllable aspect ratios10.1111/j.1551-2916.2009.03005.x ↗
6. Growth mechanism of single-crystal α-Al2O3 nanofibers fabricated by electrospinning techniques10.1016/j.jeurceramsoc.2010.11.011 ↗
7. Temperature-induced changes in morphology and microstructure of electrospun mullite nanofibers fabricated from a hybrid mullite sol10.1016/j.ceramint.2017.11.200 ↗
8. Tunable white light emission by variation of composition and defects of electrospun Al2O3-SiO2 nanofibers10.3762/bjnano.6.29 ↗
9. Review of mullite synthesis routes by sol-gel method10.1007/s10971-010-2222-9 ↗
10. Crystal Chemistry of mullite and related phases
11. Fabrication and characterization of electrospun mullite nanofibers10.1016/j.matlet.2009.07.059 ↗
12. Synthesis and characterization of electrospun mullite nanofibers10.1002/adem.200900222 ↗
13. Synthesis of mullite nanofibres by electrospinning of solutions containing different proportions of polyvinyl butyral10.1016/j.ceramint.2013.05.003 ↗
14. Effect of viscosity of polyvinyl alcohol solution on morphology of the electrospun mullite nanofibres10.1016/j.ceramint.2013.10.132 ↗
15. Electrospun mullite fibers from the sol-gel precursor10.1007/s10971-014-3599-7 ↗
16. Chen · 2016 · vol. 1511 · 1504
17. Synthesis of flexible mullite nanofibres by electrospinning based on nonhydrolytic sol-gel method10.1007/s10971-017-4354-7 ↗
18. Effects of added polyvinyl pyrrolidone on morphology and microstructure of multiple-phase mullite nanofibers10.1016/j.ceramint.2018.05.195 ↗
19. Electrospun mullite nanofibers derived from diphasic mullite sol
20. Homogeneous and flexible mullite nanofibers fabricated by electrospinning through diphasic mullite sol-gel route10.1007/s10853-018-2667-8 ↗
21. Mullite fibres prepared by sol-gel method using polyvinyl butyral10.1016/j.jeurceramsoc.2008.08.008 ↗
22. Evolution of aluminosilicate structure and mullite crystallization from homogeneous nanoparticulate sol-gel precursor with organic additives10.1016/j.jeurceramsoc.2007.12.033 ↗
23. Dehydration and structural development of mullite precursors: an FTIR spectroscopic study10.1016/S0955-2219(01)00265-5 ↗
24. Sol-gel transition study and pyrolysis of alumina-based gels prepared from alumatrane precursor10.1016/j.colsurfa.2003.11.019 ↗
25. Sol-gel fabrication of compact, crack-free alumina film10.1016/j.materresbull.2006.08.005 ↗
26. Beaded nanofibers formed during electrospinning10.1016/S0032-3861(99)00068-3 ↗
27. A new assignment of IR vibrational modes in mullite10.1016/S0924-2031(02)00030-9 ↗
28. Infrared frequency calculations for ideal mullite (3Al2O3·2SiO2)10.1111/j.1151-2916.1972.tb11211.x ↗
29. Boron mullite: formation and basic characterization10.1016/j.materresbull.2012.08.064 ↗
30. Microstructure and elastic modulus of electrospun Al2O3-SiO2-B2O3 composite nanofibers with mullite-type structure prepared at elevated temperatures10.1016/j.jeurceramsoc.2017.08.007 ↗
31. Growth mechanism of single-crystal α-Al2O3 nanofibers fabricated by electrospinning techniques10.1016/j.jeurceramsoc.2010.11.011 ↗