Article Title

A nanoporous oxide interlayer makes a better Pt catalyst on a metallic substrate: Nanoflowers on a nanotube bed

Authors

Hongyi Li, Key Laboratory of Advanced Materials, College of Materials and Engineering, Beijing University of Technology, Beijing 100124, China Department of Nuclear Science and Engineering and Department of Materials Science andEngineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
Jinshu Wang, Key Laboratory of Advanced Materials, College of Materials and Engineering, Beijing University of Technology, Beijing 100124, China
Man Liu, Key Laboratory of Advanced Materials, College of Materials and Engineering, Beijing University of Technology, Beijing 100124, China
Hong Wang, Key Laboratory of Advanced Materials, College of Materials and Engineering, Beijing University of Technology, Beijing 100124, China
Penglei Su, Key Laboratory of Advanced Materials, College of Materials and Engineering, Beijing University of Technology, Beijing 100124, China
Junshu Wu, Key Laboratory of Advanced Materials, College of Materials and Engineering, Beijing University of Technology, Beijing 100124, China
Ju Li, Department of Nuclear Science and Engineering and Department of Materials Science andEngineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA

Keywords

electrocatalyst, titanium dioxide nanotube, platinum nanoflower, catalytic activity, cycle life

Abstract

To improve the contact between platinum catalyst and titanium substrate, a layer of TiO2 nanotube arrays has been synthesized before depositing Pt nanoflowers by pulse electrodeposition. Dramatic improvements in electrocatalytic activity (3×) and stability (60×) for methanol oxidation were found, suggesting promising applications in direct methanol fuel cells. The 3× and 60× improvements persist for Pt/Pd catalysts used to overcome the CO poisoning problem.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-014-0464-5

Publisher

Tsinghua University Press

Recommended Citation

Hongyi Li,Jinshu Wang,Man Liu,Hong Wang,Penglei Su,Junshu Wu,Ju Li, A nanoporous oxide interlayer makes a better Pt catalyst on a metallic substrate: Nanoflowers on a nanotube bed. NanoRes.2014, 7(7): 1007–1017