Uniformly self-decorated 'CO IND.3'O' IND.4' nanoparticles on N, S co-doped carbon layers derived from a camphor sulfonic acid and metal – organic framework hybrid as an oxygen evolution electrocatalyst - Khalid, Mohd; Honorato, Ana M B; Ticianelli, Edson Antonio; Varela, Hamilton (Journal of Materials Chemistry A, 2018)