Free-standing and flexible Cu/Cu2O/CuO heterojunction net: A novel material as cost-effective and easily recycled visible-light photocatalyst

Facing the worldwide deepening water-shortage and water-contamination crises, developing visible-light photocatalysts for water purification is an urgent need. However, the present photocatalysts are mostly in form of powders and nanoparticles, which make the recovery inevitably depend on expansive separation processes. The great challenge of photocatalyst recovery severely limits their industry applications. Herein, a new kind of free-standing...