Aminated TiO2 nanotube as a Photoelectrochemical Water Splitting photoanode

Abstract

The present work reports on the enhancement of TiO2 nanotubes photoelectrochemical water splitting rate by decorating the nanostructure with an amine layer in a hydrothermal process using diethylenetriamine (DETA). The aminate coated TiO2 tubes show a stable improvement of the photoresponse in both UV and visible light spectrum and under hydrothermal conditions, 4-fold increase of the photoelectrochemical water splitting rate is observed. From intensity modulated photocurrent spectroscopy (IMPS) measurements significantly faster electron transport times are observed indicating a surface passivating effect of the N-decoration.

In Catalysis Today, Available online 21 July 2016

References in corpus (3)

• One-dimensional Titanium Dioxide Nanomaterials: Nanotubes
• Efficient Photocatalytic H2 Evolution: Controlled Dewetting-Dealloying to Fabricate Site-Selective High-activity Nanoporous Au Particles on Highly Ordered TiO2 Nanotube Arrays
• Noble metals on anodic TiO2 nanotubes mouths: Thermal dewetting of minimal Pt co-catalyst loading leads to significantly enhanced photocatalytic H2 generation

Cited by in corpus (2)

• Photoanodes Based on TiO${}_2$ and $\alpha$-Fe${}_2$O${}_3$ for Solar Water Splitting Superior Role of 1D Nanoarchitectures and of Combined Heterostructures
• Compositional gradients in sputtered Ti-Au alloys: Site-selective Au-decoration of anodic TiO${}_2$ nanotubes towards enhanced photocatalytic H${}_2$ evolution