Synthesis, Activity and Durability of Pt Nanoparticles Supported on Multi-walled Carbon Nanotubes for Oxygen Reduction
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Shao_Horn_Synthesis, activity.pdf
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435.3 KB
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Date Issued
October 2011
Journal
Journal of The Electrochemical Society
Publisher
Electrochemical Society
Citation
Sheng, Wenchao, Seung Woo Lee, Ethan J. Crumlin, Shuo Chen, and Yang Shao-Horn. Synthesis, Activity and Durability of Pt Nanoparticles Supported on Multi-walled Carbon Nanotubes for Oxygen Reduction. Journal of The Electrochemical Society 158, no. 11 (2011): B1398. ©2011 ECS - The Electrochemical Society
Version
Final published version
Abstract
Carbon nanotube supported metal nanoparticles (NPs) have attracted considerable attention due to their great potential for heterogeneous catalysis. In this paper, surfactant-free and well dispersed platinum (Pt) NPs supported on multi-walled carbon nanotubes (MWCNTs) were synthesized by immobilization of negatively charged Pt precursor (PtCl4[superscript 2−]) onto positively charged MWCNTs (NH3[superscript +]-MWCNTs) by electrostatic interactions, which was reduced subsequently to Pt NPs of ∼2 nm supported on MWCNTs by heating in 4% H2 atmosphere. The Pt loading on MWCNTs could be controlled by the pH of the suspension of Pt precursor and MWCNTs, and the Pt-precursor concentration in the suspension. These Pt NPs supported on MWCNTs showed comparable oxygen reduction reaction (ORR) activity to a commercial Pt catalyst supported on high-surface-area carbon but with enhanced durability.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Department of Mechanical Engineering
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DOI of Published Version
https://doi.org/10.1149/2.066111jes
