▎ 摘　　要

To address the freshwater scarcity issue and the environmental impact of wastewater disposal, herein a novel efficient strategy to enhance the performance of solar-driven interfacial evaporation technique is developed to purify salt-containing wastewater and seawater for sustainable clean water production. This strategy enables photovoltaic electricity to power photothermal conversion for rapidly vaporizing brine using commercial melamine sponge (MS)-supported reduced graphene oxides (MS@rGO). The record-high performance with an evaporation rate of 9.02 kg m(-2) h(-1) along with a solar-to-vapor efficiency of 287.4% in 7 wt% salt brine is achieved under 1 sun and optimized voltage applied. During evaporating brine, MS@rGO can also efficiently catalyze oxygen reduction for the sustainable production of H2O2 to serve as the broad-acting disinfecting agent in the condensed water. Because applying voltages can facilitate the movement of salt ions in brine, the presented system is endowed with excellent salt-resistance and superior ability of extracting photogenerated electrons, significantly improving the energy utilization efficiency. Therefore, this design provides a new way for highly efficiently applying solar energy in saline wastewater purification and seawater desalination with low cost.