10 results about "Cadmium sulphide" patented technology

The application relates to application of Bi2O2Se in a photocatalytic nitrogen fixation reaction and belongs to the technical field of photocatalytic nitrogen reduction. The BOS catalyst with intrinsic weak hole oxidation capacity realizes efficient and stable photocatalytic ammonia synthesis without a sacrificial agent. The BOS has an optimized narrow band gap structure and a unique straddling energy band arrangement, the valence band position is shallow, the hole oxidation capacity is weak, the oxidation degradation of NH4 + Can be effectively inhibited, and the conduction band position is suitable, so that the thermodynamic driving force of nitrogen reduction is ensured. The catalyst has excellent light absorption capacity in a wide spectral range (extending to the near-infrared region), and the apparent quantum efficiency reaches 0.12% at a wavelength of 700 nm. The ammonia synthesis rate of the BOS without a sacrificial agent reaches 61 muM.h ‑1 -1, which is 8.3 times and 2.8 times that of carbon nitride and cadmium sulfide, and the catalyst maintains high activity in an air atmosphere, has excellent oxygen compatibility and cycle stability.

This invention discloses a three-armed cadmium sulfide nanorod photocatalyst, comprising: three-armed cadmium sulfide nanorods, molybdenum disulfide, and iridium disulfide; wherein each of the three tips of the three-armed cadmium sulfide nanorods is loaded with molybdenum disulfide and iridium disulfide. This photocatalyst is obtained by mixing the three-armed cadmium sulfide nanorods with iridium chloride and sodium molybdate in a solvent, followed by a hydrothermal reaction. This invention achieves efficient separation of photogenerated electron-hole pairs and improves photocatalytic performance by successfully loading molybdenum disulfide and iridium disulfide nanoflower-like co-catalysts onto the tips of the three-armed cadmium sulfide nanorods.

The application discloses a kind of silicon carbide-transition metal sulfide composite catalysts for electrochemical hydrogen evolution, it is related to electrochemical hydrogen evolution catalyst technical field, technical scheme is first, by chemical vapor deposition method on silicon substrate growth two-dimensional silicon carbide nanosheet;Subsequently, nanosheet is mixed with zinc sulfide and cadmium sulfide powder;Finally, mixture is calcined under nitrogen atmosphere, and composite catalyst is formed after cooling.This structure shows excellent electron transport speed and stability at high temperature after cooling.Through the optimized synthesis condition, the obtained catalyst shows significant electrochemical activity and stability in electrochemical hydrogen evolution, effectively improves the efficiency of hydrogen evolution, and solves the limitations of traditional catalysts in performance and stability.This new catalyst provides an efficient and economical solution for the application of water electrolysis hydrogen production technology, and is expected to play an important role in energy conversion and storage fields.

The application belongs to the field of photocatalytic materials, and particularly relates to a silver metavanadate composite cadmium sulfide photocatalytic material, a preparation method thereof and application thereof in photocatalytic hydrogen production. The preparation method comprises the following steps: taking a sulfur source and a cadmium source, adding ethylenediamine, stirring and uniformly mixing; transferring to a hydrothermal reaction kettle for reaction; after the reaction is completed, taking the obtained suspension, centrifuging, washing and drying to obtain cadmium sulfide powder; adding water to the cadmium sulfide, adding a silver source and a vanadium source under stirring, stirring, transferring to a reaction kettle for hydrothermal reaction, then centrifuging, washing and drying to obtain the silver metavanadate composite cadmium sulfide photocatalytic material. The photocatalytic material has a relatively obvious catalytic effect in photocatalytic hydrogen production reaction. Under the irradiation of a xenon lamp and under the condition of a set reaction system, the hydrogen production rate of the photocatalyst reaches 228.8 micromoles per gram per hour, which is obviously superior to that of a pure cadmium sulfide catalyst.

The application belongs to the field of photocatalysis, and particularly relates to a preparation method and application of a cadmium sulfide in-situ polymerized maleic anhydride photocatalytic material. In order to overcome the serious photocorrosion phenomenon of single CdS, the application polymerizes maleic anhydride on cadmium sulfide in-situ under the initiation of ultraviolet light by using a sulfur source, a cadmium source and a monomer maleic anhydride as raw materials, so as to obtain a cadmium sulfide in-situ polymerized maleic anhydride photocatalytic material. The material has a strong degradation on rhodamine B under visible light, and the stability and repeatability of the material are also relatively excellent. Meanwhile, the preparation method of the application is simple and safe in process, does not need any external initiator, is mild and green in condition, and is extremely easy to mass-produce, so that the application improves the limitation of the photocatalytic performance of current single CdS, and has an extremely wide application prospect in degradation of polluting dyes.

The application belongs to the technical field of semiconductor photoelectrocatalytic functional materials, and particularly relates to a copper bismuthate-based composite thin film electrode material, a preparation method and application thereof. The application adopts a spin-coating-annealing-calcination process to construct a copper bismuthate thin film layer on a conductive substrate, and realizes the sequential loading of cadmium sulfide, noble metal or oxide thereof on the copper bismuthate thin film layer through chemical bath deposition and impregnation and calcination. The copper bismuthate thin film layer and the cadmium sulfide layer form a p-n heterojunction structure, and an electrocatalytic layer of noble metal is introduced on the surface of the p-n heterojunction, so as to enhance the interface charge transport process and improve the surface reaction kinetics. The copper bismuthate-based composite thin film electrode material not only has a simple preparation process, but also has high photoelectrocatalytic activity and cycle stability, so as to realize the efficient degradation of organic pollutants and has high application prospect.

This invention proposes a method for preparing and applying a cadmium sulfide-cobalt hydroxide-graphene photocatalyst. The method includes: first, preparing CdS nanocubes; then, sequentially adding a graphene oxide solution, CdS nanocubes, and cobalt nitrate hexahydrate to deionized water to obtain a mixed solution; finally, adding a solution containing trisodium citrate and hexamethylenetetramine to the mixed solution; and then sequentially subjecting the mixture to oil bath heating and freeze-drying to obtain a cadmium sulfide nanocube-cobalt hydroxide nanosheet array-graphene composite photocatalyst. This invention introduces dual auxiliary catalysts, combining CdS with GR and Co(OH)2 cocatalysts in an appropriate manner to promote charge separation / transfer and inhibit photocorrosion, thereby improving the overall photocatalytic hydrogen production coupled with benzyl alcohol oxidation to benzaldehyde performance, and effectively enhancing the performance of CdS.

The application relates to the field of optoelectronic technology and discloses a local-shading-resistant perovskite photovoltaic module and a preparation method thereof. The module is divided into multiple sub-cells connected in series by multiple isolation line grooves, a photosensitive material layer with reverse photoconductivity is filled in the first isolation line groove, the photosensitive material layer is made of cadmium sulfide material co-doped with chlorine and copper, when a local sub-cell is shaded and the light intensity is lower than a preset light intensity threshold, the resistance of the photosensitive material layer is suddenly reduced due to the loss of strong light inhibition, thereby a bypass conduction loop across the shaded sub-cell is automatically constructed. The application breaks the physical bottleneck of the conventional module relying on an external bypass diode, solves the barrel effect of the series circuit under uneven light by using the negative photoconductivity of the material, significantly reduces the internal power loss, improves the actual power generation efficiency under complex working conditions, and the overall preparation process is highly compatible with the existing patterning mass production process.

The application discloses a supported photocatalyst, a preparation method thereof and application of the photocatalyst in hydrogen sulfide decomposition. x MXene, wherein T x represents surface functional groups -O, -F, -OH) and a semiconductor material cadmium sulfide (CdS) loaded on the surface of the material, namely CdS / Mo2CT x photocatalyst; the photocatalyst directly decomposes hydrogen sulfide in a special quartz reactor filled with the supported photocatalyst to form a micro reaction bed, pure hydrogen sulfide (H2S) gas is introduced, and then the decomposition is carried out under irradiation of a laser; in the process, hydrogen sulfide is decomposed into hydrogen (H2) and sulfur (S). The application has the advantages of simple operation, mild conditions, high decomposition efficiency and the like, and can realize direct decomposition of hydrogen sulfide under the action of light only.