Nano Science and Technology Institute
Nanotech 2011 Vol. 1
Nanotech 2011 Vol. 1
Nanotechnology 2011: Advanced Materials, CNTs, Particles, Films and Composites
 
Chapter 7: Nanomaterials for Catalysis
 

Palladium Quantum Dots Sensitized TiO2 Nanotube Arrays for Enhancing Photoelectrocatalytic Hydrogen Generation

Authors:J.J. Gong, C.J. Lin
Affilation:Xiamen University, CN
Pages:666 - 669
Keywords:water splitting
Abstract:In order to further enhance photoeletrocatalytic reactivity, it is desirable to develop a facile and effective technique to obtain high quality Pd@TNTAs with homogeneous dispersion and small enough particle size down to few of nm Pd quantum dots (QDs) on the geometrically-ordered TiO2 nanotube arraysIn this paper we report an investigation on the Pd QDs sensitized TiO2 nanotube arrays (Pd/TiO2NTs) and their excellent performance in hydrogen production by photoelectrocatalytic water splitting. The Pd QDs are found uniformly distributed on both inside and outside TiO2 nanotubes with average size from ~2.5 to ~4nm with a very narrow size distribution. Uniform coverage of Pd QDs from the pore bottom to top has been achieved. The obtained nanocomposites showed an incident photon-to-current conversion efficiency (IPCE) value of nearly 100% and a significantly enhanced photocatalytic hydrogen generation rate of about 592 mmol•h-1•cm-2 under 320 mW/cm2 irradiation. These results clearly demonstrate that Pd QDs sensitized TiO2 nanotube arrays can remarkably improve the photocatalytic efficiency.
Palladium Quantum Dots Sensitized TiO2 Nanotube Arrays for Enhancing Photoelectrocatalytic Hydrogen GenerationView PDF of paper
ISBN:978-1-4398-7142-3
Pages:882
Hardcopy:$199.95
 
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