1409 results about "Cu2 ions" patented technology

The present invention is directed to a biocidal water treatment composition, water treatment apparatus, and method of treating water to reduce levels of pathogens. The composition contains sources of copper, zinc, and silver metal ions within a crosslinked polymer matrix. Examples of these ion sources include copper sulfate, zinc sulfate, and silver nitrate. An example of the crosslinked polymer matrix is crosslinked chitosan, which also serves to clarify the water and release the metal ions over time. The product is easy to manufacture, and allows the use of decreased halogen sanitizer, as well as decreased copper ion, thereby decreasing the likelihood of staining. The product simultaneously provides good bactericidal and algaecidal properties, despite low levels of copper ion and low chlorine levels.

A water purification system and method suitable for use in swimming pools, spas, hot tubs, water storage tanks, wells and water cooling towers employs a galvanic cell having a silver or copper or zinc anode electrically connected to a cathode made from a metal of still higher electrochemical potential, normally a platinum group metal and preferably palladium. A galvanic cell of some tens of square centimeters in size and some hundreds of grams in weight liberates sufficient silver or copper ions so as to treat a multi-thousand liter body of water, such as a swimming pool, for, typically under normal contamination, some months until the anode is consumed. Copper and/or silver ions liberated from the galvanic cell suppress bacterial, fungal and/or algae growth, thus, significantly reducing the amount of chlorine, bromine or other chemicals needed to maintain water quality. The invention operates on the current generated by the galvanic action between the dissimilar metals of the anode and cathode, and does not require external electrical power.

The invention discloses regenerated acidic etching solution, a copper recycling method and a special device thereof, belonging to the field of electrochemically recycling waste solution and nonferrous metal. An electrolytic tank in electrochemical treatment is divided into an anode chamber, an intermediate chamber and a cathode chamber. Dilute sulfuric acid solution is contained in the anode chamber, and a lead-tin-calcium alloy plate is adopted as an anode electrolytic plate. Waste acidic etching solution is contained in the intermediate chamber. Copper sulfate solution is contained in the cathode chamber, and a stainless steel plate is adopted as a cathode electrolytic plate. Under the function of an electric field, copper is dissolved out from a copper sulfate system. Water in the anode chamber is oxidized to generate oxygen gas and hydrogen ions. When the concentration of the copper ions is reduced to 1g or lower than 1g, the etching solution can be used anew. The method greatly reduces the production cost and causes no atmospheric pollution at the same time as realizing the recycling.

The invention provides a copper-rare earth compound antimicrobial agent and a preparation method and an application thereof. The antimicrobial agent is compound carrier prepared by chemically-synthesized sodium zirconium phosphate and natural tourmaline according to the weight ratio of 1.2-5.7:1 and loaded by copper ions and rare earth ions by an ion exchange method, wherein the content of the copper ions is 3.4-9.0wt percent, the content of the rare earth ions is 1.5-4.5 wt percent, and the rare earth comprises La, Ce, Nd, Sm and Eu. The preparation method comprises the steps of exchanging the copper ions and the rare earth ions into the carrier through a liquid phase or solid phase ion exchange method and preparing the compound antimicrobial agent through proper post treatment. Containing three antimicrobial active centers of the copper ions, the rare earth ions and negative ions, which can generate synergistic effect, the compound antimicrobial agent has the characteristics of better thermal stability and light resistance, stable color and low cost, and can be added to materials such as plastics, rubber, fiber, coating, bonding adhesive, ceramics and the like for preparing antimicrobial functional materials and products.

The invention relates to cuprous oxide nano hollow spheres and a synthetic method thereof. The synthetic method comprises the following steps of: (1) dissolving a cupric salt in an organic solvent, and controlling the copper ion concentration at 0.01-0.6mol/L; (2) transferring the solution obtained in the step (1) into a reaction vessel, sealing the reaction vessel, putting the reaction vessel into a reaction environment in which the temperature is 120-200 DEG C, performing thermal reaction for 0.5-8 hours, and cooling the reaction vessel naturally; (3) separating the solid obtained in the step (2), washing and drying to obtain the cuprous oxide nano hollow spheres. According to the synthetic method, the cuprous oxide nano hollow spheres are prepared through a one-pot hydrothermal synthesis under the condition that any surfactant is not added; the prepared nano spheres with unique hollow structures have excellent dye adsorption capacity and lithium ion battery performance.

The invention discloses a Cu-Zn catalyst, a precursor, a preparation method and an application thereof. The Cu-Zn catalyst takes a mesoporous molecular sieve as a carrier to load active components comprising cuprum and zinc. The preparation method comprises the following steps: the mesoporous molecular sieve is added into a water solution holding cuprum ions and zinc ions for soaking, filtered to obtain solid filter cakes which are mixed with a bonder and a bonding aid for prilling, then dried, roasted and cooled, thus obtaining the precursor of the Cu-Zn catalyst of the invention, or the mesoporous molecular sieve also can be mixed with the bonder and the bonding aid for prilling, added to the water solution holding the cuprum ions and the zinc ions for soaking, then dried, roasted and cooled. The precursor of the Cu-Zn catalyst of the invention is deoxidized in a reduction atmosphere to obtain the Cu-Zn catalyst of the invention. The Cu-Zn catalyst of the invention not only has good catalyzing efficiency, but also has good stability, high catalytic activation and relatively long service life, thus being able to be applied to the reaction of high temperature and high pressure catalytic hydrogenation of fatty acid ester or the preparation of fatty alcohol by hypercritical catalytic hydrogenation.

The invention relates to a carbon nanotube-metal composite enhanced copper-based composite material and a preparation method thereof, and belongs to the field of preparation of composite materials. The preparation method comprises the following steps: preparing colloidal sol by using soluble salts containing metallic elements and copper ions and carbon nanotube as raw materials, carrying out spray granulation by using the colloidal sol through a spray dryer so as to obtain nanoscale mixed powder, calcining the mixed powder in an oxygen-free atmosphere so as to obtain black powder, reducing the black powder in a hydrogen atmosphere so as to obtain carbon nanotube-metallic element composite enhanced copper-based powder, carrying out isostatic press moulding on the mixed powder, and then sintering in the hydrogen atmosphere so as to obtain the carbon nanotube-metallic element composite enhanced copper-based composite material, wherein the content of a metallic element X in the composite material is 0.1-2wt%, and the content of the carbon nanotube in the composite material is 0.1-2wt%. The preparation method has the advantages that corresponding carbides can be formed, the problem of reinforcement agglomeration caused by poor interface bonding between reinforcement and a copper matrix is solved, and the copper-based composite material with excellent combination properties can be obtained.

The invention relates to thermoplastic polyamide moulding compositions containing: (A) at least 20% by wt. polyamide and/or at least one copolymer containing at least 20% by wt. polyamide structural units; (B) 0.01% by wt. to 2% by wt., relative to the polyamide portion and/or the portion of polyamide structural units, of the composition of a copper-containing stabiliser; and (C) 0.01% by wt. to 3% by wt., relative to the polyamide portion and/or the portion of polyamide structural units of the composition, of at least one organic compound containing metal complexing groups, so that the copper ions are present in complexed form through binding to the metal-complexing groups. These moulding compositions may be used as coating material for coolant lines.

The invention discloses an optical probe film and a special-purposed organic dye for micro determinations of copper ion contents in water sample. The structural formula of the organic dye provided by the present invention is represented by formula I. On the basis of the organic dye, an active group -COCl is introduced. The -COCl group is subject to an amidation reaction with -NH2 on chitosan, and is fixed on a chitosan film through a covalent bond. With the above processes, an optical probe film is produced. The optical probe film has specific response to copper ions. Because copper ions and organic dye molecules are combined through reversible complexations, when the content of the dissociated copper ions in the water sample is changed, the copper ion content still can be reflected instantly. When in use, the film is immersed in a water sample requiring testing, the film is stood in the water sample for 5 minutes, and analysis and determination can be carried out upon the copper-ion-containing water sample through a spectrophotometer. The optical probe film provided by the present invention has advantages of easy production and low cost. According to the present invention, the optical film does not pollute the water system requiring testing, and can be repeatedly used. With the optical film provided by the present invention, an in situ on-line detection can be realized. (Formula I)

The invention discloses a copper-ion-imprinted composite adsorbing material and a preparation method thereof. The preparation process comprises the following steps: respectively preparing chitosan acetic acid solution and sodium carboxymethyl cellulose/sodium hydroxide composite solidifying liquid, dripping the chitosan acetic acid solution into the sodium carboxymethyl cellulose/sodium hydroxidecomposite solidifying liquid to form spheres, placing into Cu<2+> for imprinting after washing, then using glutaraldehyde for crosslinking, then carrying out elution by using acid to remove Cu<2+>, washing and drying to obtain the copper-ion-imprinted composite adsorbing material. The copper-ion-imprinted composite adsorbing material prepared by the invention is millimeter-scale gel microspheres with uniform size, has good selective adsorption capacity for Cu<2+>, and can be recycled repeatedly; the raw materials are from natural polymers, so that no secondary pollution is caused; the preparation process is simple, the energy consumption is low, and the environment-friendly effect is achieved, so that the copper-ion-imprinted composite adsorbing material can be widely applied to treatmentof waste water and waste liquor containing copper ions.

The invention discloses a tyrosinase electrochemical biosensor based on a metal organic skeleton material and chitosan and a preparation method and application thereof. The preparation method includes the steps that tyrosinase is first fixedly carried on the surface of the metal organic skeleton material (CuMOF) with copper ions being a metal center and then mixed with chitosan (Chi) to generate a CuMOF-Tyr-Chi composite material so that the composite material can be fixed to the surface of a glassy carbon electrode to prepare the tyrosinase electrochemical biosensor. The biosensor has the advantages that sensitivity for a bisphenol type compound is high; the detection limit is low; selectivity is good; the biosensor is easy to prepare without a complex sample pre-treatment process, response to a target compound is rapid, and miniaturization is easy.

The invention discloses a preparation method and application of a magnetic graphene oxide adsorbent material. The preparation method comprises the steps that chitosan reacts with ferrous ions and ferric ions to synthesize magnetic chitosan nanoparticles; the magnetic chitosan nanoparticles are subjected to reduction and acidification by carbon disulfide, then connect onto the surface of graphene oxide by an amidation reaction, thus a new magnetic graphene oxide adsorbent material capable of adsorbing metal ions, especially copper ions is obtained. The graphene oxide has unique two-dimension monoatomic layer structures, so that the surface area of the graphene oxide is large, then a large number of oxygen-containing groups distributed on the surface of the graphene oxide are capable of well adsorbing the metal ions in wastewater, and the magnetic chitosan modified by CS2 is added, not only are the adsorbability and the dispersibility in water improved, but also the separation is easier under the action of an applied magnetic field. The defects of low adsorbing capacity, difficult recovery and reuse, long separating time, low adsorption efficiency and the like in a process that a traditional adsorption material adsorbs the copper ions are overcome.

A copper ion fluorescent probe and a preparation method and the use thereof relate to a fluorescence molecule probe, in particular to a copper ion fluorescence molecule probe and the preparation method and the application of the probe in the identification and detection of heavy metal. A copper ion fluorescence molecule probe with better effect which can test the heavy metallic copper ions in aqueous solution and the preparation method and the application are provided. Polyethyleneimine is allocated to be polyethyleneimine solution; the polyethyleneimine solution is taken out, filtered and poured into the lining of polytetrafluoroethylene which is sealed by a stainless steel cover; a solvent is distilled after reactions and the yellow viscous liquid-like copper ion fluorescent probe is gained. The copper ion fluorescent probe can be applied to the detection of the heavy metallic copper ions, in particular to the detection of the copper ions in biological tissues and environmental wastewater.

The invention relates to a chitosan-based hydrogel. Macromolecular chains of chitosan in the structure are rapidly crosslinked through transition metal to form a netted supramolecular structure, NH2 and OH on the macromolecular chains of chitosan are connected with a coordination bond formed through a complex reaction of transition metal, and therefore hydrogel has good biocompatibility, stability and mechanical strength and strong plasticity. Meanwhile, the chitosan-based hydrogel has multiple response functions, has reversible response performance for various kinds of mater such as acid, copper ions, halogen ions, oxalate, sulfions, ammonia water, sulfate radical and hydrazine hydrate, and has irreversible response performance for phytic acid and hydrogen peroxide.

The invention discloses fluorescent wide chroma test paper for visually detecting copper ions as well as a preparation method and application of the test paper. The preparation method comprises the following steps: by taking a three-color ratio fluorescence probe as ink and taking filter paper as a solid-phase carrier through an inkjet printer, uniformly printing, thereby obtaining the test paper capable of visually detecting the copper ions, wherein the three-color ratio fluorescence probe refers to blue carbon dots, green quantum dots and red quantum dots, and the quantum dots are all modified by 3-mercaptopropionic acid. The three-color ratio fluorescence test paper is constructed to be used for visually detecting the copper ions by utilizing double-quenching principle first, the prepared detection test paper has the advantage that the color change range is wide compared with the conventional double-ratio fluorescence test paper, and along with addition of the detection object, test paper colors can be obviously identified by naked eyes from light scarlet, light flesh color, deep orange, grass green, dark olive green, slate blue, royalblue to cyanic color (Figure 4).

Copper salts and copper organic complexes are added to thermal inkjet inks, to deliver copper to a resistor surface where the copper ion aids in removal of koga.

The invention provides a biological remediation method for soil polluted by cadmium, zinc, lead and copper ions. The biological remediation method is realized by the following technical scheme comprising the following steps: (1) selecting the soil to be remediated, polluted by heavy metals, manually removing weeds and shrubs, applying enough decomposed organic agricultural foreign fertilizers in the end of autumn and the beginning of winter, deeply ploughing to enable the soil to be weathered, freezing overwintering pests for death, ploughing a land thoroughly and crushing the soil by a rake; (2) after the soil is unfrozen in the spring, when the average temperature reaches more than 10 DEG C, transplanting woody and fast-growing trees, namely bamboo willows with the heavy-metal enriching capability; (3) after the transplanting is finished, when the temperature reaches more than 15 DEG C, implementing the earthworm remediating process, and then collecting earthworms; and (4) after the first-time collection of the earthworms in the earthworm remediating process, planting elsholtzia splendens and alfred stonecrop and then wholly removing the elsholtzia splendens plants and the alfred stonecrop plants with roots, and in the spring next year, reintroducing the earthworms, the elsholtzia splendens and the alfred stonecrop into the land for remediation again, wherein the whole remediation process lasts for 20 months totally.

A chemical mechanical polishing aqueous dispersion includes (A) abrasive grains, (B) an organic acid, and (C1) copper ions or (C2) at least one kind of metal atoms selected from Ta, Ti, and Rb, the chemical mechanical polishing aqueous dispersion including the copper ions (C1) at a concentration of 1×10¹ to 2×10⁵ ppm, or including the at least one kind of metal atoms (C2) selected from Ta, Ti, and Rb at a concentration of 1×10⁻¹ to 1×10³ ppm.

It is an optical absorption ratio difference continuous flow determination trace amounts copper ion method, relating to a continuous flow analysis and optical absorption ratio difference linked water samples determination trace amounts copper ion concentration method. Prepare 0.04mmol/l chromium naphthalene green G and pH 4~5 acetate - sodium acetate buffer solution mixture as color solution; use peristaltic pump, mixed reactor, circulation pool an spectrophotometer to determine the water sample. The peristaltic pump uses 1000r/min speed to pump simultaneously the copper ion samples and color solution into a self-designed mixed reactor, and passing through the circulation pool, using the spectrophotometer to measure the copper ion sample concentration of 0-0.0180mg/l scope and 508nm wavelength and 586nm absorbance, to calculate the absorbance ratio, and draw the line; use the same method to determine absorbency of measured water samples; compare the line to calculate the copper ions concentration in water sample. The invention is fast, efficient and reproducible, and it can be online monitoring and continuous determination. It is suitable for rapid determination and online analysis for trace copper ions in drinking water, surface water, and other natural waters.

The invention discloses a method for producing water hyacinth biochar and an application thereof, which belong to the technical field of biochar. The method comprises the following steps: 1) preparation of a raw material: acquiring fresh water hyacinth in an eutrophication water area, washing the water hyacinth, drying the water hyacinth at the temperature of 60-80 DEG C for 12-48 hours, drying the material and crushing the material for standby; and 2) preparation of the biochar: performing pyrolysis on the crushed water hyacinth under low-temperature limited oxygen environment at the temperature of 200-400 DEG C for 4-8 h, crushing the pyrolysis product, sieving the product, and preserving the product to producing the water hyacinth biochar. The invention also relates to an application of the water hyacinth biochar in copper ions adsorption. The invention provides the method for producing the water hyacinth biochar and the application thereof, water hyacinth resource can be effectively used, water hyacinth can be effectively consumed, waste water is processed; and the method can be used for producing the water hyacinth biochar and can be used for absorbing copper ions in waste water.

The invention provides a femtosecond laser direct writing method of copper antioxidant microstructure and copper ion ink, A method for fabricate a microelectronic device by directly writing a cop microstructure on a copper ion thin film with a femtosecond laser includes that steps of: (a) providing a copper ion ink comprising a copper salt, a polyvinylpyrrolidone, and a long chain alcohol, whereinthe solvent is water; (b) preparing a copper ion film: aft that substrate to be washed by an organic solvent and soaked in deionized wat, the copper ion ink is dripped or spin-coated on the cleaned substrate, and the thickness is 100 DEG C after oven drying; 500 [mu]m copper ion film; (c) directly writing that copper wire using a femtosecond laser direct write device so as to direct write of thedesired electrode circuit on the thin film; (d) removing that area not irradiated by the femtosecond lase: cleaning the substrate with organic solvent and water in turn, and finally obtaining the substrate printed with the electrode circuit. The method of the invention and the copper ion ink can simplify the manufacturing process of the microelectronic device, reduce the manufacturing cost and improve the product performance.