Optimization of photoelectrochemical water splitting performance on hierarchical TiO2 nanotube arrays
Citations Over TimeTop 1% of 2012 papers
Abstract
In this paper, we show that by varying the voltages during two-step anodization the morphology of the hierarchical top-layer/bottom-tube TiO2 (TiO2 NTs) can be finely tuned between nanoring/nanotube, nanopore/nanotube, and nanohole–nanocave/nanotube morphologies. This allows us to optimize the photoelectrochemical (PEC) water splitting performance on the hierarchical TiO2 NTs. The optimized photocurrent density and photoconversion efficiency in this study, occurring on the nanopore/nanotube TiO2 NTs, were 1.59 mA cm−2 at 1.23 V vs. RHE and 0.84% respectively, which are the highest values ever reported on pristine TiO2 materials under illumination of AM 1.5G. Our findings contribute to further improvement of the energy conversion efficiency of TiO2-based devices.
Related Papers
- → Fabrication of an Efficient BaTaO2N Photoanode Harvesting a Wide Range of Visible Light for Water Splitting(2013)224 cited
- → Hierarchically branched Fe2O3@TiO2nanorod arrays for photoelectrochemical water splitting: facile synthesis and enhanced photoelectrochemical performance(2016)92 cited
- → Growth of Patterned Nanopore Arrays of Anodic Aluminum Oxide(2003)35 cited
- → Variation of Nanopore Diameter Along Porous Anodic Alumina Channels by Multi-Step Anodization(2011)4 cited
- → Study of Nanopores Ordering in Anodic Aluminum Oxide Templates Achieved by Three Step Process(2010)