Catalytic performance of hybrid Pt@ZnO NRs on carbon fibers for methanol electro-oxidation

A novel Pt@ZnO nanorod/carbon fiber （NR/CF） with hierarchical structure was prepared by atomic layer deposition combined with hydrothermal synthesis and magnetron sputtering （MS）. The morphology of Pt changes from nanoparticle to nanorod bundle with controlled thickness of Pt between 10 and 50 nm. S...

Full description

Saved in:
Bibliographic Details
Published in:Chinese journal of chemical engineering 2017-12, Vol.25 (12), p.1871-1876
Main Authors: Li, Dongyan, Gu, Chen, Han, Feng, Zhong, Zhaoxiang, Xing, Weihong
Format: Article
Language:English
Subjects:
Carbon fibers
Magnetron sputtering
Methanol electro-oxidation
ZnO nanorods
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A novel Pt@ZnO nanorod/carbon fiber （NR/CF） with hierarchical structure was prepared by atomic layer deposition combined with hydrothermal synthesis and magnetron sputtering （MS）. The morphology of Pt changes from nanoparticle to nanorod bundle with controlled thickness of Pt between 10 and 50 nm. Significantly, with the increase of voltage from 0 to 0.6 V （vs. standard calomel electrode）, the prompt photocurrent generated on ZnO NR/CF increases from 0235 to 0.725 mA. Besides, the Pt@ZnO NR/CF exhibited higher electrochemical active surface area （ECSA） value, better methanol oxidation ability and CO tolerance than Pt@CF, which demonstrated the importance of the multifunctional ZnO support. As the thickness of Pt increasing from 10 to 50 rim, the ECSA values were improved proportionally, leading to the improvement of methanol oxidation ability. More importantly, UV radiation increased the density of peak current of Pt@ZnO NR/CF towards methanol oxidation by additional 42.4%, which may be due to the synergy catalysis of UV light and electricity.
ISSN:1004-9541
2210-321X
DOI:10.1016/j.cjche.2017.08.013