Fig. 4: Characteristics of the water desorption-driven endothermic reaction (WD-ER) unit. | Nature Communications

Fig. 4: Characteristics of the water desorption-driven endothermic reaction (WD-ER) unit.

From: Passive isothermal film with self-switchable radiative cooling-driven water sorption layer for arid climate applications

Fig. 4

a Field emission scanning electron microscopy (FE-SEM) image and energy dispersive spectroscopy (EDS) of chromium(III) terephthalate metal-organic frameworks (MIL-101(Cr)). b N2 adsorption curve of MIL-101(Cr). c Isothermal water adsorption curve of MIL-101(Cr). d Dynamic water sorption cycles of MIL-101(Cr) at 23 °C. e Solubility variation with temperature of ammonium nitrate, which presents the energy density of ammonium nitrate at 722 kJ kg−1 within the operating temperature range of 5–50 °C. Source data are provided as a Source Data file.

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