Abstract: The present invention relates to a silk fibroin/hydroxyapatite composite material, and a preparation method therefor and an application thereof. A uniform mixture of hydroxyapatite nanoparticles, silk fibroin, and hexafluoroisopropanol is maintained at a temperature range from 50° C. to 60° C. for at least 1 hour to obtain a silk fibroin/hydroxyapatite solution; the silk fibroin/hydroxyapatite solution is poured into a long cylindrical mold, two ends of the long cylindrical mold being respectively an end A and an end B; at room temperature, the end A is opened and the end B is closed, and the mold is vertically immersed in methanol with the opening facing up and let stand for at least 2 days; the mold is turned upside down, the end A is closed and the end B is opened, and the mold is vertically immersed in the methanol with the opening facing up and let stand for at least 2 days; the mold is removed, and ventilation and drying are performed to obtain a silk fibroin/hydroxyapatite composite material.

Abstract: The present invention discloses a near-infrared regenerative intelligent fiber-based adsorptive material and a preparation method and use thereof. The material is obtained by chemically grafting a stepwise dual-temperature stimuli-responsive polyethyleneimine onto a carboxylated cellulose nanofiber matrix to prepare a stepwise dual-temperature stimuli-responsive intelligent nanofiber, and combining the stepwise dual-temperature stimuli-responsive intelligent nanofiber with a photosensitizer having near-infrared stimuli-response to prepare a stepwise dual-temperature/near-infrared stimuli-responsive intelligent nanofiber, and then by using a crosslinking agent to directly crosslink and combine the stepwise dual-temperature/near-infrared stimuli-responsive intelligent nanofiber with a hyperbranched polyamine in one step. The material has a stepwise dual-temperature/near-infrared stimuli-response, high density of amino group (greater than 14 mmol/g), and nano cavities.