Fe⁰/Feub>3ub>Oub>4ub>/Coke composite was synthesized and used as the heterogeneous Fenton catalyst.

Response surface methodology was used to study the degradation of p-Nitrophenol in Fe⁰/Feub>3ub>Oub>4ub>/Coke-Hub>2ub>Oub>2ub> system.

A possible degradation pathway of p-Nitrophenol in Fe⁰/Feub>3ub>Oub>4ub>/Coke-Hub>2ub>Oub>2ub> process was proposed.

The obtained Fe⁰/Feub>3ub>Oub>4ub>/Coke composite was low-cost and environment-friendly and showed good stability for repeated use.