Photoelectrocatalytic oxidation of methane into methanol and formic acid over ZnO/graphene/polyaniline catalyst
Liu Jia, Zhang Ying-Hua, Bai Zhi-Ming †, Huang Zhi-An, Gao Yu-Kun
       

Electrochemical double layer capacitance curves on (a) ZnO, (b) ZnO/graphene, (c) ZnO/PANI, (d) ZnO/graphene/PANI with scan rates ranging from 10 mV · s − 1 to 50 mV · s − 1 (versus Ag/AgCl) in 1-M Na2SO4.