Fig. 2.
Free-standing, multifunctional P–G–Nifoam layer for solar energy absorption, water transport, and solar vapour generation. a Optical image of the P–G–Nifoam. SEM image of b microporous structure of P–G–Nifoam and c, d graphene array before and after PEDOT-PSS coating. e Fluidic transport across the P–G–Nifoam in 180 s. f Flow height along with time. Inset: the static water contact angle measurement of P–G–Nifoam. g IR images of P–G–Nifoam as a function of time at an illumination of 1 kW m−2. h Surface temperature of P–G–Nifoam as a function of time at an illumination of 1 kW m−2. i Experimental absorption spectra of P–G–Nifoam in the wavelength range of 200–2600 nm. All tests were performed at a room temperature and atmospheric pressure