3D printed hierarchically porous zero-valent copper for efficient pollutant degradation through peroxymonosulfate activation

•A zero-valent copper (3D-ZVC) TPMS structure was fabricated via 3D printing.•3D-ZVC can bear 13 kg of load, 8666 times higher than its own weight.•3D-ZVC showed superior catalytic activity to Cu2+ and Cu powder in PMS activation.•3D-ZVC is convenient to separate and displays excellent stability after 23 cycles.•Toxicity estimation analysis was used to evaluate the products of TC degradation.