A self-floating photothermal membrane with simultaneous mechanical stability and antibacterial activity is facilely prepared for efficient solar-driven interfacial water evaporation.

Porous MoS2 nanoflower-containing hydrogels are proposed as enhanced light trapping and antibacterial photothermal hotspots and are facilely deposited on a hydrophilic MCE substrate for highly efficient solar-driven interfacial water evaporation.

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A mesoporous carbon nanosphere-intercalated graphene hydrogel with a hierarchical porous architecture is prepared as a flexible quasi-solid-state photothermal supercapacitor via solar irradiation.

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Developing a simple strategy to simultaneously overcome the aggregation of graphene nanosheets and endow the ordered mesoporous carbon with the high conductivity required for a practical supercapacitor remains a great challenge. Herein, a strategy involving ethanol dispersive mixing, followed by co-carbonization was developed to prepare a N-doped ordered mesoporous carbon nanosphere-encapsulated graphene network (N-OMCN@GN), where the ordered mesoporous carbon nanosphere (OMCN) was inserted into the interlayers of graphene nanosheets and an optimized nitrogen doping level of up to 11.7 at% was simultaneously achieved. The as-prepared N-OMCN@GN possesses hierarchically porous architectures with largely accessible surfaces, short ion access/diffusion length with fast ion transfer, and a sphere (electron reservoir)-encapsulated plane (electron highway) configuration for convenient electron transfer. As a result, the N-OMCN@GN supercapacitor exhibited a high specific capacitance of 242.3 F g-1 at 1 A g-1 and excellent cycling stability with a capacitance retention of 95% at 5 A g-1 after 10 000 cycles. This study would pave the way to excavate the synergistic effects of graphene and OMCN for energy storage applications.