One-Dimensional Titanium Dioxide and Its Application for Photovoltaic Devices

One-dimensional (1D) TiO 2 nanostructures (e.g., nanotubes, nanobelts, nanowires, and nanorods) have been considered to be very attractive candidates for various applications including photocatalytic degradation of pollutants, photocatalytic CO 2 reduction into energy fuels, water splitting, solar cells, supercapacitors, and lithium-ion batteries. More importantly, the dimensionality associated with zero-dimensional TiO 2 nanostructures gives unique physical properties, including a high aspect ratio structure, chemical sta -bility, excellent electronic or ionic charge transfer, and a specific interface effect. This chapter elaborates on crystal structure and properties, preparation techniques, strate gies for improving photocatalytic activity of 1D-TiO 2 nanostructure and its applications. Amongst all preparation techniques, the influence of experimental parameters on mor phologies of 1D-TiO 2 nanostructure using hydro/solvothermal method is extensively explained. Furthermore, some critical engineering strategies to enhance the properties of 1D-TiO 2 nanostructures like increasing the surface area, extending the light absorption, and efficient separation of electrons/holes that advantage their potential applications are described. Moreover, a brief summary of their environmental and energy applications is provided. on the development of sustainable environmental remediation and energy tech nologies based the photocatalytic process by driving solar light as renewable source of energy.