Fabrication of highly porous SiC fiber mat for gas burner media application having well dispersed palladium nano catalyst

Jin Rye Kim; Yoon Joo Lee; Dong Geun Shin; Chang Gon Kim; Doh Hyung Riu

doi:10.1016/j.matlet.2026.140676

Fabrication of highly porous SiC fiber mat for gas burner media application having well dispersed palladium nano catalyst

Jin Rye Kim
, Yoon Joo Lee
, Dong Geun Shin
, Chang Gon Kim
, Doh Hyung Riu

Dept. of Materials Science & Engineering

Seoul National University of Science and Technology (SNUST)
Korea Institute of Ceramic Engineering And Technology
Korcarb

Research output: Contribution to journal › Article › peer-review

Abstract

This study presents a processing strategy for anchoring palladium nanoparticles onto porous SiC fiber mats. Polycarbosilane served as an anchoring medium, with Pd acetylacetonate premixed and coated onto CVD-treated fiber substrates. Pre-oxidation samples exhibited particle coarsening and embedment within a dense, catalytically inactive SiO₂-rich matrix. In contrast, direct pyrolysis in air at 1200 °C produced uniformly distributed nanoparticles stabilized within an amorphous SiOC coating. These non-pre-oxidation samples showed clear activity in CO chemisorption tests, attributed to a porous matrix that preserved accessibility and distribution of active sites. Supported by TG–DTA, XRD, and TEM analyses, these results demonstrate a route to achieving nanoscale metal anchoring on fiber supports and highlight the microstructural tunability of polymer derived ceramic based catalytic systems.

Original language	English
Article number	140676
Journal	Materials Letters
Volume	416
DOIs	https://doi.org/10.1016/j.matlet.2026.140676
State	Published - 1 Aug 2026

Keywords

CO chemisorption
Coating
Palladium nanoparticle
Polycarbosilane
SiC fiber mats

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10.1016/j.matlet.2026.140676

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@article{4d61247ecec245a8b017aba31268ae22,

title = "Fabrication of highly porous SiC fiber mat for gas burner media application having well dispersed palladium nano catalyst",

abstract = "This study presents a processing strategy for anchoring palladium nanoparticles onto porous SiC fiber mats. Polycarbosilane served as an anchoring medium, with Pd acetylacetonate premixed and coated onto CVD-treated fiber substrates. Pre-oxidation samples exhibited particle coarsening and embedment within a dense, catalytically inactive SiO₂-rich matrix. In contrast, direct pyrolysis in air at 1200 °C produced uniformly distributed nanoparticles stabilized within an amorphous SiOC coating. These non-pre-oxidation samples showed clear activity in CO chemisorption tests, attributed to a porous matrix that preserved accessibility and distribution of active sites. Supported by TG–DTA, XRD, and TEM analyses, these results demonstrate a route to achieving nanoscale metal anchoring on fiber supports and highlight the microstructural tunability of polymer derived ceramic based catalytic systems.",

keywords = "CO chemisorption, Coating, Palladium nanoparticle, Polycarbosilane, SiC fiber mats",

author = "Kim, \{Jin Rye\} and Lee, \{Yoon Joo\} and Shin, \{Dong Geun\} and Kim, \{Chang Gon\} and Riu, \{Doh Hyung\}",

note = "Publisher Copyright: {\textcopyright} 2026 Elsevier B.V.",

year = "2026",

month = aug,

day = "1",

doi = "10.1016/j.matlet.2026.140676",

language = "English",

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journal = "Materials Letters",

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TY - JOUR

T1 - Fabrication of highly porous SiC fiber mat for gas burner media application having well dispersed palladium nano catalyst

AU - Kim, Jin Rye

AU - Lee, Yoon Joo

AU - Shin, Dong Geun

AU - Kim, Chang Gon

AU - Riu, Doh Hyung

PY - 2026/8/1

Y1 - 2026/8/1

N2 - This study presents a processing strategy for anchoring palladium nanoparticles onto porous SiC fiber mats. Polycarbosilane served as an anchoring medium, with Pd acetylacetonate premixed and coated onto CVD-treated fiber substrates. Pre-oxidation samples exhibited particle coarsening and embedment within a dense, catalytically inactive SiO₂-rich matrix. In contrast, direct pyrolysis in air at 1200 °C produced uniformly distributed nanoparticles stabilized within an amorphous SiOC coating. These non-pre-oxidation samples showed clear activity in CO chemisorption tests, attributed to a porous matrix that preserved accessibility and distribution of active sites. Supported by TG–DTA, XRD, and TEM analyses, these results demonstrate a route to achieving nanoscale metal anchoring on fiber supports and highlight the microstructural tunability of polymer derived ceramic based catalytic systems.

AB - This study presents a processing strategy for anchoring palladium nanoparticles onto porous SiC fiber mats. Polycarbosilane served as an anchoring medium, with Pd acetylacetonate premixed and coated onto CVD-treated fiber substrates. Pre-oxidation samples exhibited particle coarsening and embedment within a dense, catalytically inactive SiO₂-rich matrix. In contrast, direct pyrolysis in air at 1200 °C produced uniformly distributed nanoparticles stabilized within an amorphous SiOC coating. These non-pre-oxidation samples showed clear activity in CO chemisorption tests, attributed to a porous matrix that preserved accessibility and distribution of active sites. Supported by TG–DTA, XRD, and TEM analyses, these results demonstrate a route to achieving nanoscale metal anchoring on fiber supports and highlight the microstructural tunability of polymer derived ceramic based catalytic systems.

KW - CO chemisorption

KW - Coating

KW - Palladium nanoparticle

KW - Polycarbosilane

KW - SiC fiber mats

UR - https://www.scopus.com/pages/publications/105036449149

U2 - 10.1016/j.matlet.2026.140676

DO - 10.1016/j.matlet.2026.140676

M3 - Article

AN - SCOPUS:105036449149

SN - 0167-577X

VL - 416

JO - Materials Letters

JF - Materials Letters

M1 - 140676

ER -

Fabrication of highly porous SiC fiber mat for gas burner media application having well dispersed palladium nano catalyst

Abstract

Keywords

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