Reduced graphene oxide(RGO)and Cu-BTC are adopted to modify TiO2 to promote photocatalytic performance.The morphologies of the as-prepared composites are obtained by SEM,and the rhodamine-B(RB)is employed to estimate the UV-and visible-light activities.Moreover,the lifetime of photoinduced electrons and EPR profiles of the resulting photocatalysts are recorded,revealing the functions of the RGO and Cu-BTC,and the corresponding photocatalytic mechanism is also proposed.After optimizing the mass fractions of various components to achieve the synergy,the rate constants of RB under UV-and visible-light illumination reach 1.44×10-1 and 9.2×10-2 min-1,respectively.High recycling and using stability of the optimized sample indicates the potential application prospect.
维普
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