One-Dimensional Titanium Dioxide and Its Application for Photovoltaic Devices

Abstract

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 stability, excellent electronic or ionic charge transfer, and a specific interface effect. This chapter elaborates on crystal structure and properties, preparation techniques, strategies for improving photocatalytic activity of 1D-TiO 2 nanostructure and its applications. Amongst all preparation techniques, the influence of experimental parameters on morphologies 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.

Enhanced interfacial charge transfer on strain-induced 2D-1D/MoS2-TiO2 heterostructures for electrochemical and photocatalytic applications

“…Since their discovery, heterostructures of different dimensionalities have been increasingly used in photocatalytic applications [1][2][3]. Heterojunction nanostructured photocatalysts are now more appealing than individual elements because they have a synergistic effect that results in increased photocatalytic activity [4].…”

Highly Efficient Solar Vapor Generation via a Simple Morphological Alteration of TiO2 Films Grown on a Glassy Carbon Foam

“…Titanium dioxide (TiO 2 ) is a highly stable, nontoxic, inorganic, and inexpensive material, extensively studied in numerous morphological forms, e.g., films, nanoparticles, nanowires, nanotubes, and nanorods for a plethora of applications. − One-dimensional (1D) nanostructures of TiO 2 provide an ideal platform for efficient solar vapor generation owing to their large surface area (high surface-to-volume ratio) and hydrophilic nature. However, such 1D nanomorphs have been rarely exploited for solar vapor generation due to their limited absorption across the entire solar spectrum, although there have been several attempts to simply increase light absorption using TiO 2 films with further treatments such as reduction and plasmonic effects. , …”

Mixed-Phase TiO2 Nanotube–Nanorod Hybrid Arrays for Memory-Based Resistive Switching Devices

“…can be diverse by controlling certain parameters of growth, for example, the concentration of the electrolyte used and applied temperature conditions. 5,6 The crystallinity, grain size, and concentration of impurities have also been shown to influence the properties of the formed TNs. In recent years, mixed-phase TiO 2 nanostructures (MxPh-TNs) that impact the growth behavior of TiO 2 are most investigated.…”

“…There are certain studies that have reported that the growth behaviors of TNs (such as structure, composition, morphology, etc.) can be diverse by controlling certain parameters of growth, for example, the concentration of the electrolyte used and applied temperature conditions. , The crystallinity, grain size, and concentration of impurities have also been shown to influence the properties of the formed TNs …”