Capacitive and Oxidant Generating Properties of Black-Colored TiO2 Nanotube Array Fabricated by Electrochemical Self-Doping
- 1 April 2015
- journal article
- Published by American Chemical Society (ACS) in ACS Applied Materials & Interfaces
- Vol. 7 (14), 7486-7491
- https://doi.org/10.1021/acsami.5b00123
Abstract
Recently, black-colored TiO2 NTA (denoted as black TiO2 NTA) fabricated by self-doping of TiO2 NTA with the amorphous phase led to significant success as a visible-light-active photocatalyst. This enhanced photocatalytic activity is largely attributed to a higher charge carrier density as an effect of electrochemical self-doping resulting in a higher optical absorbance and lower transport resistance. Nevertheless, the potential of black TiO2 NTA for other electrochemical applications, such as a supercapacitor and an oxidant-generating anode, has not been fully investigated. Here, we report the capacitive and oxidant generating properties of black TiO2 NTA. The black TiO2 NTA exhibited significantly a high value for areal capacitance with a good rate capability and novel electrocatalytic activity in generating (•)OHs and Cl2 compared to pristine TiO2 NTA with the anatase phase. This study suggests that the black TiO2 NTA be applied as a supercapacitor and an oxidant generating anode.Funding Information
- Ministry of Land, Infrastructure and Transport (13IFIP-B065893-01)
This publication has 45 references indexed in Scilit:
- Heterostructured TiO2 Nanoparticles/Nanotube Arrays: In Situ Formation from Amorphous TiO2 Nanotube Arrays in Water and Enhanced Photocatalytic ActivityChempluschem, 2012
- TiO2 Nanotubes: Synthesis and ApplicationsAngewandte Chemie, 2011
- Transparent, Well-Aligned TiO2 Nanotube Arrays with Controllable Dimensions on Glass Substrates for Photocatalytic ApplicationsACS Applied Materials & Interfaces, 2010
- Bioactive SrTiO3 Nanotube Arrays: Strontium Delivery Platform on Ti-Based Osteoporotic Bone ImplantsACS Nano, 2009
- TiO2 Nanotube ArraysPublished by Springer Science and Business Media LLC ,2009
- Synthesis and application of highly ordered arrays of TiO2 nanotubesJournal of Materials Chemistry, 2007
- A review on highly ordered, vertically oriented TiO2 nanotube arrays: Fabrication, material properties, and solar energy applicationsSolar Energy Materials and Solar Cells, 2006
- Use of Highly-Ordered TiO2 Nanotube Arrays in Dye-Sensitized Solar CellsNano Letters, 2005
- Photocatalysis on TiO2 Surfaces: Principles, Mechanisms, and Selected ResultsChemical Reviews, 1995
- Environmental Applications of Semiconductor PhotocatalysisChemical Reviews, 1995