Synthesis of Two‐dimensional TiO 2 Nanostructures

Two-dimensional (2D) titanium dioxide (TiO 2 ) has emerged as a promising material due to its remarkable durability, nontoxicity, cost-effectiveness, and exceptional properties such as tunable bandgap, high transparency, and superior charge carrier mobility. With its unique layered structure characterized by strong in-plane bonding and weak interlayer interactions, 2D TiO 2 exhibits enhanced mechanical robustness and optical properties, making it ideal for applications in photocatalysis, optoelectronics, and photovoltaics. The ability to tailor its thickness allows precise control over its electronic and optical behavior, further broadening its potential in advanced technologies. This chapter delves into the state-of-the-art synthesis methods for 2D TiO 2 , providing a detailed discussion of their mechanisms, selection criteria, and performance outcomes. The advantages and limitations of these approaches are critically evaluated, offering valuable insights into the challenges and opportunities in the field. Finally, the chapter highlights future directions for the development of efficient and scalable synthesis techniques, paving the way for expanded applications of 2D TiO 2 in cutting-edge technologies.