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Published in: Journal of Nanoparticle Research 1/2018

01-01-2018 | Research Paper

Pd/WO3/C nanocomposite with APTMS-functionalized tungsten oxide nanosheet for formic acid electrooxidation enhancement

Authors: Yang Yang, Yun-Hua Li, Ya-Fei Zhao, Peng-Wei Li, Qiao-Xia Li

Published in: Journal of Nanoparticle Research | Issue 1/2018

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Abstract

A Pd/WO3/C nanocomposite with 3-aminopropyltrimethoxysilane (APTMS)-functionalized tungsten oxide nanosheets (Pd/WO3/C-APTMS) was synthesized and applied as the efficient anode catalyst for direct formic acid fuel cells (DFAFCs). The mechanism for synthesizing the nanocomposite is as follows: initially, [PdCl4]2− was assembled onto the tungsten oxide nanosheets modified with APTMS. Following this, Pd nanoparticles were reduced via traditional impregnation reduction of [PdCl4]2− with NaBH4. The transmission electron microscope (TEM) images revealed that the Pd nanoparticles were uniformly dispersed on WO3 nanosheets and were approximately 2.7 nm in size. The electrochemical test results showed that enhanced electrocatalytic activity for the formic acid oxidation reaction (FAOR) was obtained on the Pd/WO3/C catalyst compared with Pd/C. The higher electrocatalytic activity might be attributed to the uniform distribution of Pd with smaller particles. Furthermore, it is likely that the improvement in catalytic stability for the Pd/WO3/C catalyst is due to the hydrogen spillover effect of WO3 particles. These results indicate that this novel Pd/WO3/C-APTMS nanocomposite exhibits promising potential for use as an anode electrocatalyst in DFAFCs.

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Literature
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Metadata
Title
Pd/WO3/C nanocomposite with APTMS-functionalized tungsten oxide nanosheet for formic acid electrooxidation enhancement
Authors
Yang Yang
Yun-Hua Li
Ya-Fei Zhao
Peng-Wei Li
Qiao-Xia Li
Publication date
01-01-2018
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 1/2018
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-017-4116-z

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