Publication Date:
2019
Description:
An effective and facile dip‐loading approach was adopted to fabricate Au nanoparticle (NPs) @TiO2 nanotube arrays (NTAs) heterostructured films with improved H2 generation rate under visible light.
Abstract
Au nanoparticle (NPs)@TiO2 nanotube arrays (NTAs) heterostructured films with enhanced H2 generation rate under full spectrum were synthesized, by using a controllable and facile dip‐loading approach. Size of the Au NPs was well‐distributed around 7 nm, and the TiO2 NTAs were found vertically aligned. Due to LSPR effect and Schottky contact, the as‐prepared Au NPs@TiO2 NTAs heterostructured films exhibited improved H2 generation abilities as well as photocatalytic degradation abilities. H2 evolution rate of the obtained samples (effective area: 5.25 cm2) reached 74.56 μmol/h, which was 38 times higher than that of the raw TiO2 NTAs. And the Au NPs@TiO2 NTAs samples also showed an obvious advantage over the raw TiO2 NTAs, in methyl orange degradation under UV illumination. Repetition experiments were further carried out to ensure the dip‐loading method was a reliable fabrication process, and the amount of Au particles attached on TiO2 tube walls could be manipulated by changing the dip‐loading cycle times.
Print ISSN:
0002-7820
Electronic ISSN:
1551-2916
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
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