| abstract |
The invention discloses a preparation method of aero-hydrogel with a multi-level pore structure, its product and application, and belongs to the technical field of solar energy application. First, the Pickering emulsion gel was freeze-dried to prepare aerogel porous materials with low density and good hydrophilicity, and then polyaniline aqueous dispersion, deionized water, and glutaraldehyde solution were added to the sodium carboxymethyl nanocellulose aqueous solution. , and add acid dropwise to obtain an acidified polymer viscous aqueous solution; the aerogel is placed in the acidified polymer viscous aqueous solution to carry out the hydrogel gelation process, and the aerogel and hydrogel are effectively separated by capillary force and infiltration. The aero-hydrogel with hierarchical pore structure was obtained by cross-linking, which was used as a solar water evaporator. The preparation method of the invention is simple, the prepared aero-hydrogel has a high steam generation rate, and can absorb heat from the environment under the promotion of wind energy, and has broad application prospects in solar-driven steam generation. |