▎ 摘　　要

NOVELTY - A natural polymer-based atmospheric water collection material is prepared using natural polymer as matrix and cross-linking to obtain hollow structure with large number of macropores and micropores on the surface, where natural polymer is natural polymer material with polysaccharide main chain and hydrophilic side chains, and the size of macropores and micropores is in micro-nano range. USE - Natural polymer-based atmospheric water collection material for adsorption and desorption of water vapor (all claimed). ADVANTAGE - The natural polymer-based atmospheric water collection material improves the processability of hygroscopic material by introducing natural polymers, and obtains highly porous micro/nano structure to promote diffusion and transportation of water, thereby realizing rapid adsorption/desorption. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for preparing natural polymer-based atmospheric water collection material, which involves (1) dispersing natural polymer substance in water and heating to dissolve to obtain natural polymer solution, adding photothermal conversion material, uniformly dispersing by stirring and ultrasonically reacting to obtain mixed suspension, (2) dripping the prepared mixed suspension to cross-linking agent solution to cause cross-linking reaction, thereby obtaining stable spherical structure, (3) placing the obtained spherical structure material in cross-linking agent solution, fully cross-linking, and removing excess cross-linking agent, and (4) drying the treated material.