3results about How to "Avoid recombination" patented technology

The invention relates to the technical field of photoelectricity, in particular to a laminated solar cell and a preparation method thereof, a power generation device and a power utilization device. The laminated solar cell comprises a top cell, a bottom cell and a middle connecting layer arranged between the top cell and the bottom cell, the middle connecting layer comprises a transparent conductive oxide layer and a doped conductive oxide layer which are stacked, the transparent conductive oxide layer is arranged close to the bottom cell, and the doped conductive oxide layer is arranged close to the top cell; the doped conductive oxide layer is doped with a rare earth element.

This invention discloses a heterogeneous nanostructure photocatalyst, its preparation method, and its application. The invention modifies the surface of the g-C3N4 photocatalyst by introducing carbon quantum dots (CDs) through doping technology. The CDs / g-C3N4 composite photocatalyst abandons conventional metal catalysis, and its preparation process is simple, low-cost, and reusable without deactivation, making it a promising new composite photocatalyst in the field of visible light catalytic oxidation technology. Applying this catalyst to the visible light selective catalytic oxidation synthesis of the key intermediate 3-(4-nitro-1-oxo-1,3-dihydro-2H-isoindol-2-yl)piperidine-2,6-dione demonstrates good yields.

This invention belongs to the field of nanocomposite material preparation and application technology, and discloses a method for preparing and applying a dendritic ternary SrCO3-TiO2 / CdS composite material. First, SrCO3-TiO2 nanoparticles are synthesized using a simple hydrothermal one-pot method with tetrabutyl titanate and Sr(NO3)2 as raw materials. These nanoparticles are then dispersed in deionized water to form a suspension. Finally, a dendritic ternary SrCO3-TiO2 / CdS composite material is prepared using an in-situ hydrothermal growth method. The dendritic ternary SrCO3-TiO2 / CdS composite material prepared by this invention can be used to produce hydrogen peroxide under visible light and simultaneously degrade oxytetracycline. The dendritic ternary SrCO3-TiO2 / CdS composite material prepared by this invention forms a unique dendritic structure by combining SrCO3-TiO2 composite particles with CdS. By utilizing the synergistic effect among the three, the transport and separation of photogenerated electron pairs at the interface are accelerated, and their recombination is effectively inhibited, thereby improving the catalytic activity of the dendritic ternary SrCO3-TiO2 / CdS composite material. It has broad application prospects in the synthesis of green chemicals and water pollution treatment.