Tuning Ag morphology on TiO2 nanotube arrays by pulse reverse current deposition for enhanced plasmon-driven visible-light response

Artikel i vetenskaplig tidskrift, 2017

TiO 2 nanotube arrays (NTAs) decorated with controllable Ag particles were prepared by pulse reverse current deposition in AgNO 3 /NaNO 3 aqueous solution, aiming to improve the photoelectrochemical properties of TiO 2 NTA electrode in visible-light region. By tuning the pulse current density and deposited charge density, a controllable synthesis of Ag structures was achieved. Excellent photocurrent responses of TiO 2 NTAs in UV and visible light regions were achieved by depositing Ag nanorods and nanoparticles, which was attributed to highly efficient charge separation by the Schottky junction at the Ag/TiO 2 interface and localized surface plasmon resonance effect of Ag nanostructures. Graphical Abstract: [Figure not available: see fulltext.].