One-pot, high-yield synthesis of titanate nanotube bundles decorated by Pd (Au) clusters for stable electrooxidation of methanol

Journal Article · Thu Oct 15 00:00:00 EDT 2009 · Journal of Solid State Chemistry

OSTI ID:21372366

Xiudong, Xue ^[1]; Li, Gu ^[2]; Yingying, Song; Lianwen, Zhu; Peng, Chen ^[1]

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1. Key Lab of Organic Synthesis of Jiangsu Province and Department of Chemistry, Soochow University, Suzhou, Jiangsu 215123 (China)
2. College of Biology and Chemical Engineering, Jiaxing University, Jiaxing, Zhejiang 314001 (China)

Titanate nanotube bundles assembled by several simple nanotubes were synthesized through a simple reaction between TiO{sub 2} crystallites and highly concentrated NaOH in the presence of Au or Pd sols. Due to the unique scrolling growth mechanism of titanate nanotubes (TNTs), Au or Pd clusters were encapsulated in situ by TNTs, and titanate/Au and titanate/Pd nanotube bundles were formed. In comparison with carbon nanotubes (CNTs) or active carbon that was widely used as carriers to support metal clusters, TNTs bundles can immobilize the metal clusters tightly and overcome the shortcoming of exfoliation of metal clusters from the carriers. The as-prepared titanate/metal hybrids possess mesoporosity and high surface area. The electrochemical oxidation of methanol demonstrates that titanate/Pd hybrids exhibit high electrocatalytic activity and excellent stability, and hence they should be ideal catalyst candidates in direct methanol fuel cells (DMFCs). - Graphical abstract: Titanate/Au and titanate/Pd nanotube bundles have been fabricated by taking advantage of the unique scrolling growth mechanism of titanate tubes. The titanate/Pd hybrids show stable catalytic effects toward the electrooxidation of methanol.

• OSTI ID: 21372366
• Journal Information: Journal of Solid State Chemistry, Vol. 182, Issue 10; Other Information: DOI: 10.1016/j.jssc.2009.08.001; PII: S0022-4596(09)00376-4; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ATOMIC CLUSTERS
DIRECT METHANOL FUEL CELLS
ELECTROCHEMISTRY
GOLD
HYDROTHERMAL SYNTHESIS
METHANOL
NANOTUBES
PALLADIUM
SODIUM HYDROXIDES
SOLS
TITANATES
TITANIUM OXIDES
ALCOHOL FUEL CELLS
ALCOHOLS
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHEMISTRY
COLLOIDS
DIRECT ENERGY CONVERTERS
DISPERSIONS
ELECTROCHEMICAL CELLS
ELEMENTS
FUEL CELLS
HYDROGEN COMPOUNDS
HYDROXIDES
HYDROXY COMPOUNDS
METALS
NANOSTRUCTURES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM METALS
SODIUM COMPOUNDS
SYNTHESIS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS