Preparation and hydrogen gas sensitive characteristics of highly ordered titania nanotube arrays

Effect of Ti defects on electrochemical properties of highly-ordered titania nanotube arrays

A highly ordered titania nanotube array as a supercapacitor electrode.

We report the synthesis of self-organized titania nanotubes and nanocrystalline titania powders employing an alternative and novel approach. Integrating these nanostructures in a binder-free working electrode improved the capacitance up to 911 μF cm(-2), which is around one to two orders of magnitude higher than the conventional electric double layer capacitors.

Highly Ordered Nano-Arrays of Titania-Based Nanohybrids

Titanium oxide (TiO2 , titania) is well-known as an important ceramic material. Due to its versatile optical, electrical and photochemical properties, it has found extensive applications in high-refractive index devices, optical waveguides, photo-catalysts and photovoltaic cells. Particularly, in the form of very fine particles on the scale of ten to hundreds of nanometers, TiO2 , along with ot...

Preparation of electrochemically active silicon nanotubes in highly ordered arrays

Silicon as the negative electrode material of lithium ion batteries has a very large capacity, the exploitation of which is impeded by the volume changes taking place upon electrochemical cycling. A Si electrode displaying a controlled porosity could circumvent the difficulty. In this perspective, we present a preparative method that yields ordered arrays of electrochemically competent silicon ...

Nitrogen and transition-metal codoped titania nanotube arrays for visible-light-sensitive photoelectrochemical water oxidation.

Vertically aligned titanium dioxide nanotube (TNT) arrays codoped with nitrogen and 3d transition metals were successfully fabricated using anodization and nitridation processes. The codoping of N and Fe yielded the highest visible-light-induced photoelectrochemical water oxidation due to bandgap narrowing of impurity levels by N and Fe.