Fig. 1

A Schematic representation of the synthesis process of Ti₃C₂T_x—and Cu₂O/Ti₃C₂T_x nanosheets. B XRD pattern and C UV–Vis absorption spectra of Ti₃C₂T_x nanosheets a before and b–e after incubation with b 10, c 25, d 50 or e 100 μg mL⁻¹ of CuCl₂ for 1 h. Asterisks in B indicate peaks that are assigned to Ti₃C₂T_x nanosheets. D a HAADF-STEM image of Cu₂O/Ti₃C₂T_x nanosheets and corresponding b elemental mapping of F, O, Ti, and Cu