▎ 摘　　要

Solar steam generation is an attractive technology for harvesting solar energy to produce fresh water from sewage and sea water. Designing new photothermal materials is one of the feasible methods to improve the efficiency of photothermal conversion, which has aroused people's great interest. Herein, a new composite of reduced graphene oxide (RGO)/Cu7.2S4 polyvinyl alcohol (PVA)/polyacrylamide (PAM) hydrogels is prepared for enhanced solar water generation. As a metal-like plasma, Cu7.2S4 can increase light absorption of sheet RGO in the entire spectrum by a localized surface plasmon resonance (LSPR) effect. The double-component pore structure of PVA/PAM hydrogel can improve the effect of water replenishment and drainage, so the device can achieve a high evaporation rate (2.19 kg m(-2) h(-1)). The low cost, high efficiency, stability, and environmental sustainability of the solar evaporator make it a promising material in the field of seawater desalination. (c) 2022 Elsevier Ltd. All rights reserved.