Synthesis, characterization, and applications of ZnO–TiO2 nanocomposites

Nowadays, nanocomposites of oxide materials have attracted a lot of attention due to their potential applications in solar cells, batteries, sensors, photodetectors, photocatalysis, lasers, and light-emitting diodes. Furthermore, nanocomposites offer new technology and business opportunities for various industries. Among various oxide nanocomposites, ZnO–TiO2 nanocomposites have shown great potential due to the combined characteristics of ZnO and TiO2. Low cost, nontoxic, ecofriendly and good chemical and thermal stability, and similar bandgap are the major attractive features of the ZnO and TiO2. In this chapter, synthesis and characterization of various ZnO–TiO2 nanocomposites such as core–shell, coaxial, heterostructure, heterojunction, urchin-like, multipod, and hierarchical is presented. Further, potential applications and challenges of ZnO–TiO2 nanocomposites in the field of optoelectronics are presented at the end of the chapter.