**Preface XI**



Chapter 6 **Synthesis and Characterization of Reduced Graphene Oxide/ Polyaniline/Au Nanoparticles Hybrid Material for Energy Applications 75** Carmina Menchaca-Campos, Elsa Pereyra-Laguna, César García-Pérez, Miriam Flores-Domínguez, Miguel A. García-Sánchez and Jorge Uruchurtu-Chavarín

Chapter 7 **Defect Engineering in Reduced Graphene Oxide toward Advanced Energy Conversion 93** Guilherme Luís Cordeiro
