Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 191, Issue -, Pages 239-245Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2012.03.043
Keywords
Noble metal; Platinum mesoflower; Methanol oxidation reaction; Porous nanostructure
Funding
- National Natural Science Foundation of China [50901056]
- Doctoral Fund for New Teachers [20090201120053]
- Fundamental Research Funds for the Central Universities
- Tengfei Talent Project of Xi'an Jiaotong University
Ask authors/readers for more resources
Porous Pt and Pt-Ag alloy mesoflowers (MFs) with about 2 mu m in diameter and high porosity were synthesized using Ag mesoflowers as sacrificial template by galvanic reaction. The silver content in Pt-Ag alloys can be facilely controlled by nitric acid treatment. And the pure Pt MFs can be obtained by selective removal of silver element from Pt72Ag28 MFs electrochemically. Both Pt45Ag55, Pt72Ag28 and pure Pt show a high catalytic performance in methanol oxidation reaction (MOR). Especially, pure Pt MFs exhibited a 2 to 3 times current density enhancement in MOR compared with the commercial used Pt black, which can be attributed to their porous nanostructure with 3-dimentional nature and small crystal sizes. (C) 2012 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
