NDLI: Electrospinning of preceramic polymers for the preparation of SiBNC felts and their modification with semiconductor nanowires

Content Provider	Royal Society of Chemistry (RSC)
Author	Jansen, Martin Fiz, Raquel Wilfert, Jakob Hagen, Robin Mathur, Sanjay
Copyright Year	2012
Abstract	Preceramic polymers obtained from the aminolysis of dichloroboryl-methyl-trichlorosilyl-amine (DMTA) were processed to ceramic felts of SiBNC by electrospinning, followed by curing in ammonia and subsequent pyrolysis. An amorphous ceramic with the composition SiBN2.4C1.4 was obtained in 60% yield, which was stable against crystallization and mass loss above 1565 °C. The pyrolysed felts showed a fiber thickness ranging between 2 and 3 μm and revealed seamless connectivity among the fibers. The rheological properties of the precursor could be tuned by adjusting the polymer/solvent ratio. Solutions with 40 wt% polymer were reproducibly spun into preceramic felts, whereas lower concentrations (10 wt%) mainly led to agglomerated powders containing few fibers. Given their intertwined morphology and high-temperature stability, the SiBNC felts were used as substrates to grow tin oxide nanowires by chemical vapour deposition for potential application as electrode materials in gas sensing, demonstrated by preliminary experiments.
Starting Page	2099
Ending Page	2104
Page Count	6
File Format	HTM / HTML PDF
ISSN	09599428
Volume Number	22
Issue Number	5
Journal	Journal of Materials Chemistry
DOI	10.1039/c1jm14497a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Aminolysis Electrospinning Ammonia Pyrolysis Micrometre Rheology Polymer Solvent Tin Chemical vapor deposition Electrode
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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