**5. Future challenges and perspectives**

In this chapter, the use of nanostructured titanium dioxide is an effective and attractive alternative for fabricating flexible devices for multiple applications, which

## *Nanostructured Titanium Dioxide (NS-TiO2) DOI: http://dx.doi.org/10.5772/intechopen.111648*

can be explored based on TiO2 properties, fabrication, and modification. A further challenge is to enhance the spectral sensitivity of these structures to the visible and near-infrared regions and the biocompatibility of TiO2 nanostructures. Therefore, future studies focused on long-term, constant photoactivity are greatly needed. These can be achieved by changing the synthesis route. Nonmetal-doped TiO2 nanostructures exhibit low photocatalytic activity under visible UV light. Some materials, such as polymers, glasses, ceramics, and metals, therefore serve as magical identities for economical and environmentally friendly applications in this field. Future research requires the development of new synthetic methods and nanostructures with higher surface states. This can be serviced by techniques compatible with non-lithographic complementary metal oxide semiconductors. This technique has potential applications in new dopant materials, incorporation of dopants into TiO2 nanostructures, and environmental and alternative energy applications**.** Therefore, there is a great need to improve the structure and properties of these materials. Basic knowledge of chemistry, physics, and computer modeling will help you accomplish your task.
