Synergistic effects of Fe-substitutional-doping and a surface close-contact Fe2O3/CeO2 heterojunction in Fe/CeO2 for enhanced CH4 photocatalytic conversion

1 : 3 Fe/CeO 2 -900/6 was prepared to achieve effective CH 4 C–H activation and exhibited excellent CH 4 photo-conversion performance with a high C1 product yield of 10.56 mmol g cat. −1 h −1 .