45results about How to "No change in nature" patented technology

The invention discloses a method for treating methyl orange by utilizing a ferriporphyrin / bismuth tungstate composite photocatalytic material. The methyl orange is treated by adopting the ferriporphyrin / bismuth tungstate composite photocatalytic material and hydrogen peroxide, wherein the ferriporphyrin / bismuth tungstate composite photocatalytic material is prepared from ferriporphyrin and bismuth tungstate; the ferriporphyrin is loaded on the bismuth tungstate. The method provided by the invention has advantages of being simple to operate, short in period, easy in recovery and reutilization, high in degradation efficiency, and the like, not only can be used for quickly and efficiently degrading the methyl orange in acidic and weakly acidic conditions, but also can be used for quickly degrading the methyl orange in a strongly basic condition, is used for effectively and quickly degrading the methyl orange, and has a quite good application prospect in the actual wastewater treatment of the methyl orange.

The invention provides high-temperature-resistant ink. The high-temperature-resistant ink comprises the following components: 100 parts of organosilicone-modified resin, 60-240 parts of titanium dioxide powder, 0.5-10 parts of fumed silica, 1-30 parts of crosslinking agent, 0.01-1 part of silanol condensation catalyst, 0.1-4 parts of polysiloxane defoaming agent, 0.1-4 parts of alkyl and / or aralkyl-modified polyorganosiloxane leveling agent and 50-150 parts of solvent. According to the high-temperature-resistant ink disclosed by the invention, since organosilicone-modified resin is adopted as a main component and functional additives such as the specific crosslinking agent, the silanol condensation catalyst, the defoaming agent and the leveling agent, are mixed to jointly improve the performances, such as high temperature resistance, resistance to yellowing, stability and the like of an ink product and thus a white glass ink product with excellent high temperature resistance and chemical resistance is obtained.

The invention belongs to the technical field of nuclear magnetic resonance and relates to a T 1 -T 2 A dual-nuclear magnetic resonance imaging contrast agent and its preparation method and application. The contrast agent includes ferric iron tetroxide magnetic nanoparticles coated with carboxymethyl chitosan. The particle diameter of the magnetic nanoparticles is 5-25nm, and the hydrated particles are The diameter is 20‑200nm, the contrast agent has superparamagnetism and prominent T 1 with T 2 The relaxation enhancement effect has a good long-term circulation effect. After the function is fully exerted, it can be metabolized by the body. The preparation method is simple, the conditions are mild, and the cost is low. The contrast agent provided by the invention can be freeze-dried and stored in solid form. Long shelf life, little change in properties when reconstituted with deionized water.

The invention discloses an iron porphyrin-flaky bismuth tungstate two-dimensional composite material and a preparation method thereof, wherein the iron porphyrin-flaky bismuth tungstate two-dimensional composite material comprises iron porphyrin and flaky bismuth tungstate, and the iron porphyrin is immobilized on the surface of the flaky bismuth tungstate. The preparation method comprises: preparing a mixed solution of bismuth nitrate and sodium tungstate; preparing a precursor mixed solution; and carrying out a hydrothermal reaction on the precursor mixed solution. According to the present invention, the iron porphyrin-flaky bismuth tungstate two-dimensional composite material has advantages of good dispersibility, strong stability, easy recovery and reuse, excellent photocatalytic performance, environmental friendliness and the like, can efficiently degrade pollutants (such as antibiotics) in environment without the adding of H2O2, has good photocatalytic degradation effect, can significantly reduce the treatment cost, and has good application prospects and application range in the field of photocatalysis; and the preparation method has advantages of mild reaction conditions, simple process flow and environmental protection.