▎ 摘　　要

NOVELTY - Capturing and effective photothermal killing of bacteria involves use of an antibacterial magnetic graphene functionalized aldehyde material (I). USE - For capturing and effective photothermal killing of bacteria (claimed) useful in biomedical, health care or environmental cleaning. ADVANTAGE - The graphene-based antibacterial material (I) absorbs light irradiation and releases heat to kill the captured bacteria. The antibacterial material has low cyotoxicity; and has potential for being photocatalyst and can be extensively applied to biomedical, health care or environmental cleaning. The antibacterial material can be attracted by a magnet to move or aggregate easily for further reusability. DETAILED DESCRIPTION - Capturing and effective photothermal killing of bacteria involves antibacterial magnetic graphene functionalized aldehyde material of formula R-M-G (I). R=aldehyde, di-aldehyde or multi-aldehyde; M=magnetic material; G=reduced graphene oxide. INDEPENDENT CLAIMS are included for the following: (1) a method (M1) of synthesizing the antibacterial material (I) for photothermal killing of bacteria by converting light irradiation to emit heat involving synthesizing a graphene oxide; performing simultaneous reduction and functionalization with a magnetic material; and modifying an aldehyde onto the surface of the magnetic material; and (2) a method (M2) of using an antibacterial material involving interacting the antibacterial material (I) with bacteria; and irradiating the solution containing material (I) captured bacteria by a light source.