3results about How to "Gentle preparation" patented technology

The application discloses a kind of modular hydrogel based on liquid shaping technology, preparation method and application thereof.The method first utilizes the plasticity of liquid rubber clay, and obtains the temporary mold of specific shape by pressing or cutting, which is composed of micro-nano particle shell;The mixture containing photosensitive hydrogel precursor, nanoclay and functional factor is injected into the mold and light-cured to form a hydrogel module;Optionally, after removing the particle mold, a functionalized hydrogel module with specific morphology, non-adhesion to the substrate and adjustable mechanical properties is obtained;Finally, different functional modules are bonded and cured by hydrogel precursor to integrate into a modular hydrogel with spatial heterostructure.The application uses micro-nano particle shell as a shapeable and removable temporary mold, realizes the adjustable design of hydrogel macroscopic morphology, mechanical properties and spatiotemporal sequence of drug release, and has wide application prospect in the field of tissue engineering and regenerative medicine.

The invention discloses a small organic molecule modified composite photocatalyst as well as a preparation method and application thereof. The composite photocatalyst comprises small organic molecules and a photocatalyst containing active vacancies, wherein the small organic molecules can interact with the active vacancies and are embedded into the active vacancies; the active vacancies are generated by carrying out chemical etching treatment on the surface of the photocatalyst; the photocatalyst is an oxide, a sulfide or a nitride, and the composite photocatalyst enhances CO2 adsorption and electron transfer efficiency and improves separation efficiency, so that the catalyst can perform photocatalytic CO2 reduction under sunlight, and shows good catalytic stability under long-term continuous illumination.

This invention discloses a method for synthesizing bio-nano selenium using Beauveria bassiana, belonging to the field of nano-selenium synthesis technology. The method specifically includes the following steps: (1) activating and culturing Beauveria bassiana with accession number CGMCC 3.6914 in a liquid culture medium to obtain a spore suspension; (2) inoculating the spore suspension into a solid culture medium, simultaneously adding Na2SeO3 mother liquor, and then performing shaking culture. After the culture is completed, mixture a is obtained; (3) mixture a is separated, purified, and freeze-dried to obtain bio-nano selenium powder. The method for biosynthesizing nano-selenium in this invention utilizes Beauveria bassiana B26 (… Beauveria bassiana The metabolic activity of the substance reduces Na2SeO3 to nano-selenium, which has high synthesis efficiency, low cost and low pollution. The preparation process is simple and has great economic and environmental benefits.