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Get Free AccessCeria (CeO 2 ) nanofibers with high porosity are fabricated using an approach involving sol–gel, electrospinning, and calcination. Specifically, cerium(III) acetylacetonate and polyacrylonitrile (PAN) are dissolved in N , N ‐dimethylformamide (DMF) and then electrospun into nanofibers. The PAN matrix plays a critical role in stabilizing the porous structure from collapse during calcination in air up to 800 °C. CeO 2 porous nanofibers comprising an interconnected network of single crystalline and fully oxidized CeO 2 nanoparticles about 40 nm in size are obtained. The hierarchically porous structure of the CeO 2 nanofibers enables the facile deposition of Pt nanoparticles via heterogeneous nucleation in a photochemical method. When conducted in the presence of poly(vinyl pyrrolidone) (PVP) and 4‐benzyolbenzoic acid, uniform Pt nanoparticles with an average diameter of 1.7 nm are obtained, which are evenly dispersed across the entire surface of each CeO 2 nanofiber. The high porosity of CeO 2 nanofibers and the uniform distribution of Pt nanoparticles greatly improve the activity and stability of this catalytic system toward the water‐gas shift reaction. It is believed that this method could be extended to produce a variety of catalysts and systems sought for various industrial applications.
Ping Lü, Botao Qiao, Ning Lü, Dong Choon Hyun, Jinguo Wang, Moon J. Kim, Jingyue Liu, Younan Xia (2015). Photochemical Deposition of Highly Dispersed Pt Nanoparticles on Porous CeO<sub>2</sub> Nanofibers for the Water‐Gas Shift Reaction. , 25(26), DOI: https://doi.org/10.1002/adfm.201501392.
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Type
Article
Year
2015
Authors
8
Datasets
0
Total Files
0
Language
en
DOI
https://doi.org/10.1002/adfm.201501392
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