Premium
Enhanced mechanical properties of amorphous Si OC nanofibrous membrane through in situ embedding nanoparticles
Author(s) -
Wu Nan,
Wang Bing,
Wang Yingde
Publication year - 2018
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.15732
Subject(s) - materials science , membrane , nanofiber , electrospinning , ceramic , composite material , flexural strength , amorphous solid , ultimate tensile strength , filtration (mathematics) , nanoparticle , fiber , chemical engineering , flexural modulus , fabrication , nanotechnology , polymer , chemistry , biochemistry , mathematics , alternative medicine , organic chemistry , pathology , engineering , medicine , statistics
Flexible ceramic nanofibers are highly desired due to their potential applications in free‐standing catalyst supports, fine particulate filters and flexible electronic devices. In this work, robust Si OC fibrous membranes composed of randomly oriented nanofibers with an average diameter of 550 nm were fabricated by a combination of electrospinning and post heat‐treatment process. The mechanical properties of the as‐prepared membranes were enhanced significantly through in situ embedding of palladium nanoparticles into the Si OC fibers. The optimized palladium‐doped Si OC fibrous membrane demonstrated a low flexural modulus of 7.79 kP a and a high tensile strength of 33.2 MP a. Reduced flaw size, initiation of nanocracks and pinning effect were proposed to explain the enhancement mechanism. Furthermore, the flexible Si OC membrane with excellent corrosion resistance exhibits a high filtration efficiency of 99.6% when the membrane weight is 4.8 g m −2 , suggesting efficient filtration applications in harsh environments. This work also provides a feasible strategy for the design and fabrication of the flexible amorphous ceramic fiber membranes for various applications.