3 results about "Titanium tetrafluoride" patented technology

The utility model discloses a perovskite solar cell, the perovskite solar cell comprises a perovskite absorption layer, an electron transport layer, an interface cascade layer and an inorganic buffer layer which are stacked in sequence, and the interface cascade layer comprises a titanium tetrafluoride layer or a lead fluoride layer. According to the perovskite solar cell provided by the invention, the interface cascade layer is arranged between the electron transmission layer and the inorganic buffer layer, so that the interface contact quality between the electron transmission layer and the inorganic buffer layer can be improved, the non-radiative recombination loss of the interface is reduced, the open-circuit voltage and the filling factor of the perovskite solar cell are improved, and the performance of the perovskite solar cell is improved. And the effect of blocking water and oxygen from invading can be achieved, and the photoelectric conversion efficiency and the stability of the perovskite solar cell are improved.

The invention relates to the technical field of biological medicine, and discloses phthalocyanine modified titanium dioxide loaded camptothecin nanoparticles and a preparation method thereof, and the nanoparticles are mainly prepared from titanium dioxide, cobalt phthalocyanine and camptothecin. The preparation method comprises the following steps: taking a polyvinylpyrrolidone aqueous solution, diluted hydrochloric acid, a titanium tetrafluoride aqueous solution and the like as raw materials to obtain titanium dioxide nano-particles, and then sequentially mixing the titanium dioxide nano-particles with an N, N-dimethylformamide solution of cobalt phthalocyanine and a DSPE-PEG 2000 ethanol solution to obtain the product phthalocyanine modified titanium dioxide polyethylene glycol nano-particles. The preparation method comprises the following steps: dissolving camptothecin in a dimethyl sulfoxide solution, and mixing with a PC-TiO2 NPs-PEG solution, so as to obtain the phthalocyanine modified titanium dioxide loaded camptothecin nano-particles. The invention also provides application of the nanoparticles in treatment of cancers, especially oral squamous cell carcinoma. The invention provides a new nano-carrier delivery strategy for the camptothecin further serving as a cancer treatment drug, and has good popularization and application prospects.

This invention belongs to the field of hydrogen storage material technology, specifically relating to a method for preparing a CoTi-MOF-derived bimetallic oxide catalyst, comprising the following steps: (1) mixing and stirring cobalt acetate, titanium tetrafluoride, trisodium citrate dihydrate, and water, and allowing it to stand to obtain a mixed solution; (2) mixing and stirring potassium cobalt cyanide and water, and allowing it to stand to obtain a potassium cobalt cyanide solution; (3) mixing and stirring 2-methylimidazole and water, and allowing it to stand to obtain a 2-methylimidazole solution; (4) stirring the mixed solution, the potassium cobalt cyanide solution, and the 2-methylimidazole solution, and allowing them to stand. After standing, the resulting product is centrifuged, washed, and dried to obtain a CoTi-PBA precursor; (5) calcining the obtained CoTi-PBA precursor to obtain a CoTi-MOF-derived bimetallic oxide catalyst. This invention also relates to oxide catalysts and their application in the preparation of lithium aluminum hydride hydrogen storage materials. The catalyst prepared by the method of this invention can significantly reduce the dehydrogenation temperature of lithium aluminum hydride materials and improve their hydrogen release efficiency.