ie7b02793_si_001.pdf (87.27 kB)
Novel Synthesis of a High-Performance Pt/ZnO/SiC Filter for the Oxidation of Toluene
journal contribution
posted on 2017-10-26, 00:00 authored by Linlin Li, Feng Zhang, Zhaoxiang Zhong, Ming Zhu, Chenyang Jiang, Jian Hu, Weihong XingIn this work, a novel Pt/ZnO/SiC
filter was successfully prepared
by first coating ZnO nanoparticles on a silicon carbide filter by
a sol–gel process and then loading Pt nanoparticles on the
ZnO layer through impregnation. The microstructure, crystal morphology,
composition and elemental valence of the prepared filter were characterized
by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission
electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS).
It was found that the ZnO coating layer improved the dispersity of
the Pt nanoparticles and significantly enhanced the catalytic performance.
Toluene was used as a model volatile organic compound and reached
complete conversion of up to 100% over the porous tubular Pt/ZnO/SiC
material at a filtration velocity of 0.72 m/min within 240 h at 210
°C. The synthetic ceramic filter presented a good capacity for
the catalytic oxidation of volatile organic compounds (VOCs), and
accordingly, a simple approach is suggested here for preparing this
catalyst on a support to increase the catalytic efficiency.