Reduced Graphene Oxides Modified Bi₂Te₃ Nanosheets for Rapid Photo‐Thermoelectric Catalytic Therapy of Bacteria‐Infected Wounds

Abstract Temperature variation‐induced thermoelectric catalytic efficiency of thermoelectric material is simultaneously restricted by its electrical conductivity, Seebeck coefficient, and thermal conductivity. Herein, Bi₂Te₃ nanosheets are in situ grown on reduced graphene oxides (rGO) to generate an efficient photo‐thermoelectric catalyst (rGO‐Bi₂Te₃). This system exhibits phonon scattering effect and extra carrier transport channels induced by the formed heterointerface between rGO and Bi₂Te₃, which improves the power factor value and reduces thermal conductivity, thus enhancing the thermoelectric performance of 2.13 times than single Bi₂Te₃. The photo‐thermoelectric catalysis of rGO‐Bi₂Te₃ significantly improves the reactive oxygen species yields, resulting from the effective electron–hole separation caused by the unique thermoelectric field and heterointerfaces of rGO‐Bi₂Te₃. Correspondingly, the electrospinning membranes containing rGO‐Bi₂Te₃ nanosheets exhibit high antibacterial efficiency in vivo (99.35 ± 0.29%), accelerated tissue repair ability, and excellent biosafety. This study provides an insight into heterointerface design in photo‐thermoelectric catalysis.