Semiconductor metal oxides (SMOxs) are widely used in gas sensors due to their excellent
sensing properties, abundance, and ease of manufacture. The best examples of these …

In 1991, Iijima reported on the formation of carbon nanotubes (1) using a simple arc
discharge reaction that led to an arrangement of the material in some micrometer long tubes …

Owing to its high energy density and environmentally friendly nature, hydrogen has already
been regarded as the ultimate energy of the 21st century and gained significant attention …

Sensors have currently become increasingly important in a world where technological
advances demand precise information of numerous categories. 1, 2 They have been widely …

An extensive and wide-ranging literature about the polymorphs of titanium dioxide (TiO 2)
has accumulated during the last few decades, providing a very large resource of data on its …

Hydrogen sensors are of increasing importance in connection with the development and
expanded use of hydrogen gas as an energy carrier and as a chemical reactant. There are …

Recently, the hydrogen gas sensing properties of semiconductor oxide (SMO)
nanostructures have been widely investigated. In this article, we provide a comprehensive …

The great versatility of semiconductor materials and the possibility of generation of electrons,
holes, hydroxyl radicals, and/or superoxide radicals have increased the applicability of …

Hydrogen is used in many industrial processes and is regarded as one of the most
promising clean-energy carriers for future applications in transportation and power …

One-dimensional titanium dioxide (TiO 2)-based nanotubes have attracted great interest to
be used as photocatalysts in the field of environmental applications. Three main approaches …