144 results about "Cuprous ion" patented technology

The invention relates to a method for preparing copper-titanium dioxide core-shell nanoparticles. In the method, cupric ions provided by cuprous chloride are dissolved into ammonia water; an aqueous solution of polyethylene glycol, an aqueous solution of sodium citrate, an aqueous solution of ascorbic acid, a solution of tetrabutyl titanate (absolute ethyl alcohol) and urea are sequentially addedinto the ammonia water; the ammonia water is put into a teflon-lined stainless steel autoclave after the ammonia water is stirred at room temperature; and the nearly-spherical core-shell nanoparticles are prepared through controlling the temperature and the time for the thermal reaction of the mixed solvents. In the method for preparing the copper-titanium dioxide core-shell nanoparticles, the ascorbic acid serves as a reducing agent and is used for reducing the cuprous ions; and the polyethylene glycol serves as a soft template. The method for preparing the copper-titanium dioxide core-shellnanoparticles has the advantages of simple process, environment-friendliness, low cost and the like; the outer layer of each of the prepared copper-titanium dioxide core-shell nanoparticles is anatase titanium dioxide, and the inner layer of each of the prepared copper-titanium dioxide core-shell nanoparticles is cubic-phase copper elementary substance; and the size distribution is even, and the particle size is controllable, thus the copper-titanium dioxide core-shell nanoparticles can be used as the electrode materials and the photocatalyst materials of dye-sensitized solar cells.

The invention discloses a production method of copper sulfate. The production method comprises the following steps: adding an oxidizing agent into an acid etching waste solution to oxidize cuprous ions and ferrous ions in the acid etching waste solution; then regulating a pH value to reach 1.7 to 1.9 and carrying out stirring and reaction; then adding activated carbon again; performing settlementlayering and taking supernatant liquid to perform filtration to obtain an impurity-removed acid etching waste solution; adding soluble magnesium salt into an alkali etching waste solution and carryingout stirring and reaction; then performing settlement layering and taking supernatant liquid to obtain an impurity-removed alkali etching waste solution; performing mixed reaction on the impurity-removed acid etching waste solution and the impurity-removed alkali etching waste solution to obtain basic copper chloride; converting basic copper chloride ammonia into copper hydroxide; then performingfiltration on copper hydroxide, washing and purifying copper hydroxide and pulping copper hydroxide; then adding sulfuric acid to be acidified until pH is 0.5 to 1.0; then performing heat filtration,cooling crystallization, solid-liquid separation and drying treatment to obtain copper sulfate. Copper sulfate produced by the method can reach electroplating grade standard; moreover, a recovery ratio of copper in the etching waste solutions is high.

The invention discloses an application of a color development method based on nanogold aggregation to immunodetection. A compound containing terminal alkynyl is used for modifying nanogold, the modified functional nanogold can actively respond to silver ions or cuprous ions, and silver ions or cuprous ions are added, so that the modified functional nanogold produces a color development reaction due to different aggregation degrees, that is to say, a nanogold solution becomes blue from originally red; the color development reaction produced by the functional nanogold due to different aggregation degrees is applied to the immunodetection, and ultraviolet-visible absorption spectrums have a change due to different aggregation degrees of the nanogold, so that the changeable absorption spectrums can be measured through an instrument and quantitative detection in the immunodetection is realized. The ultraviolet-visible absorption spectrums in the color development reaction can be not only observed through naked eyes but also represented through the instrument, and the color development method has positive help for chemical detection, especially the immunodetection.

The invention belongs to the technical field of preparation and application of semiconductor materials, and discloses an organic-inorganic hybrid copper-based halide scintillator, preparation and application thereof, wherein the chemical general formula of the scintillator is AxCuyXz, A is [(CH3)(CH2)n]4N<+>, Cu is a cuprous ion Cu<+>, and X is halogen and is selected from at least one of Cl, Br and I. Compared with the prior art, the single crystal scintillator has the advantages that the variety of the single crystal scintillator can be effectively expanded, the emission spectrum can be adjusted in a visible light region, the fluorescence quantum yield (PLQY) reaches up to 96.7%, and the single crystal scintillator can be applied to the fields of high-energy ray detection, X-ray medical imaging and security inspection, nondestructive testing, industrial flaw detection and the like. The preparation process is simple, the cost is low, and large-scale industrial production can be realized. The flexible film obtained on the basis of the method can be particularly applied to flexible X-ray imaging, and very high imaging resolution and an excellent imaging effect are obtained.

The invention discloses a chlorine-free acid etching solution regeneration and copper recovery device and a method thereof. The regeneration and copper recovery device comprises an etching tank (1), an electrolytic tank (2), a regeneration cylinder (3) and a secondary electrolytic tank (4), wherein the electrolytic tank (2) and the secondary electrolytic tank (4) are respectively provided with ananode area and a cathode area, the anode area and the cathode area are connected with the regeneration cylinder (3) through a pipeline, cuprous ions in etching waste liquid can be oxidized and used asetching liquid to return to the etching tank (1), and when oxygen in the regeneration cylinder (3) is insufficient to completely oxidize the copper oxide ions, the secondary electrolytic tank can bestarted to realize supplementary electrolysis regeneration on the etching liquid in the regeneration cylinder (3). The regeneration and copper recovery device has the beneficial effects that the electrolytic etching waste liquid can be recycled, chlorine is not generated in the working process, and the etching waste liquid can be regenerated and recycled while elemental copper is recycled.

The invention provides a supported organic Cu(I) catalyst and a preparation method and application thereof. The preparation method provided by the invention comprises the following steps: modifying attapulgite by using a mercapto-silane coupling agent and isatoic anhydride to obtain isatoic anhydride-mercapto modified attapulgite, and enabling cuprous ions to be supported onto the isatoic anhydride-mercapto modified attapulgite through coordination to obtain the supported organic Cu(I) catalyst. The supported organic Cu(I) catalyst provided by the invention is high in catalytic activity and easy to separate, and can be repeatedly used, and supported organic Cu(I) catalyst is capable of catalyzing Glaser coupling reaction in an aqueous phase, and the reaction can be completed through short microwave heating.

The invention discloses a cuprous oxide / ionic liquid / composite carbon paste electrode and application thereof, relating to the trivalent arsenic electrochemical detection field. The cuprous oxide / ionic liquid / composite carbon paste electrode is prepared from cuprous oxide, graphite powder, ionic liquid and adhesive by a grinding method; the composite carbon paste electrode serving as a working electrode, a saturated calomel electrode serving as a reference electrode, and a platinum sheet serving as a counter electrode are combined to form a three-electrode system; trivalent arsenic is detected in a 0.01-0.5mol / L phosphate buffered solution with pH value of 3-10; and the scanning rate is 0.05-0.2V / s and the electric potential range is -0.8V to 0.8V. The cuprous oxide / ionic liquid / composite carbon paste electrode has the characteristics of simplicity in preparation method, large specific surface area, easiness in electrode surface updating, wide electric potential range, low price, good reproducibility and the like, and can be used for detecting trivalent arsenic in a water sample conveniently, sensitively and rapidly in an online manner.