Title :
Facile synthesis of Pt/TiO2 nanotube arrays: A reusable platform for direct methanol fuel cell
Author :
Song, Yanyan ; Gao, Zhida
Author_Institution :
Res. Center for Anal. Sci., Northeastern Univ., Shenyang, China
Abstract :
Uniform Pt nanoparticles (diameter ~5 nm) are decorated on the TiO2 nanotube arrays (TiNT) by a two-step photo irradiation method. The resulting hybrid nanotube arrays show an excellent catalytic activity for methanol electrooxidation. The anodic current density of methanol electrooxidation reaches 21 mA/cm2 with 1 mg Pt loading (previous methods typically reach ~10 mA/cm2). The photocatalytic properties of TiO2 make the Pt/TiNT arrays reusable after a short UV treatment, and the electrooxidation current density of Pt/TiNT after UV-cleaning can almost fully be re-established.
Keywords :
catalysis; nanofabrication; nanoparticles; oxidation; photochemistry; platinum; semiconductor nanotubes; surface cleaning; titanium compounds; ultraviolet radiation effects; Pt-TiO2; TiO2; anodic current density; catalytic activity; direct methanol fuel cell; methanol electrooxidation; nanotube arrays; photocatalytic properties; platinum nanoparticles; two-step photo irradiation method; ultraviolet cleaning; ultraviolet treatment; Electrodes; Fuel cells; Methanol; Nanoparticles; Oxidation; Platinum;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2011 11th IEEE Conference on
Conference_Location :
Portland, OR
Print_ISBN :
978-1-4577-1514-3
Electronic_ISBN :
1944-9399
DOI :
10.1109/NANO.2011.6144292
