▎ 摘　　要

Here, a new mode for driving the motion of graphene films on water by organic molecular diffusion is reported. Because of ultralight weight, micro/nanochannels constructed by interlayered sheets, the hydrophobic nature of graphene, and the one-way 2D diffusion of organic molecules into water induce force/torque for driving the movement of the film. It is worth mentioning that the rectangular film filled with ethanol (1 cm x 2 cm) shows a high rotational speed of 300 rpm on the water. Importantly, the continuous rotation of the graphene film can be realized by continuously adding the collected ethanol from the ethanol-water mixture under visible light irradiation. Moreover, the folded graphene film filled with ethanol can push a porcelain boat (12 g) on water with a velocity of 50 mm s(-1). Thus, it is believed that this new driving mode can be applied in the fields of microflow reactors, electric generating device, minisensors, and actuators.