▎ 摘　　要

Three-dimensional (3D) graphene/nano-copper scaffolds (rGCSs) was fabricated using a one-step chemical deposition on 3D reduced graphene oxide architecture (rGOA). The nano-copper was conformably grown on the rGOA substrate with a uniform morphology. Due to combined effects between the graphene skeleton and the nano-copper, the rGCSs demonstrated excellent antibacterial properties in the colony counting experiments. In addition, an rGCSs device was designed to further investigate the antibacterial performance for sewage management. The antibacterial killing rate was up to 100% for Escherichia coli and Staphylococcus aureus, and the nano-copper deposits were immobilized on the reduced graphene oxide sheets during the circulation process. This suggests that rGCSs is a highly-efficient antibacterial candidate for practical applications in sewage systems. (C) 2020 Elsevier B.V. All rights reserved.