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Avoiding Loss of Catalytic Activity of Pd Nanoparticles Partially Embedded in Nanoditches in SiC Nanowires

By Xiao-Ning Guo, Ru-Jing Shang, Dong-Hua Wang, Guo-Qiang Jin, Xiang-Yun Guo and KN Tu

Abstract

Nanoditches from selective etching of periodically twinned SiC nanowires were employed to hinder the migration and coalescence of Pd nanoparticles supported on the nanowires, and thus to improve their catalytic stability for total combustion of methane. The results show that the etched Pd/SiC catalyst can keep the methane conversion of almost 100% while the unetched one has an obvious decline in the catalytic activity from 100 to 82% after ten repeated reaction cycles. The excellent catalytic stability originates from the limitation of the nanoditches to the migration and growth of Pd nanoparticles

Topics: Nano Express
Publisher: Springer
OAI identifier: oai:pubmedcentral.nih.gov:2893827
Provided by: PubMed Central

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