The addition of graphene to metal oxides creates a hybrid material with enhanced physicochemical properties, of interest in a range of applications and technologies. For example, graphene combined with narrow band gap metal oxides holds considerable promise in solar energy. This book presents the methods used to characterise and understand their properties. Chapters from international authors present tailored synthetic approaches to producing materials for applications such as environmental remediation, photocatalysis, sensors, and light-emitting diodes. With a contemporary outlook on this emerging and popular class of material, this book combines ongoing research with practical techniques and real-world examples to provide an all-encompassing resource in the field and inspire future developments in academia and industry.