24 results about "Silver halide" patented technology

The present disclosure provides a substrate for surface-enhanced Raman scattering (SERS), comprising: a silver substrate having a silver nanostructured surface; and a silver halide passivation layer formed on the surface of the silver substrate. The present disclosure also provides a method for preparing the SERS substrate and a method for SERS trace detection using the substrate.

Provided are an image forming method and a mono-sheet laminate for forming a discharge image in which the reproducibility of discharge behavior is high and the occurrence of processing defects due to dust adhesion or the like is suppressed. The image forming method involves using a mono-sheet laminate (10) obtained by integrating a transparent supporting body (1) on which an image receiving element (2) and an auto-positive silver halide photographic photosensitive element (3) are laminated, a cover sheet (4) covering the photosensitive element (3), a conductive connecting member (6) for grounding which is connected to a peripheral part of a surface of the transparent supporting body (1), the surface being on the reverse side to the surface on which the image receiving element (2) is laminated, and a pod containing an alkaline processing liquid and forming an image on the mono-sheet laminate (10). The image forming method involves performing discharge on the mono-sheet laminate (10) from an electrode (32a) of a DC discharge device (30) disposed at a distance of 0-15 mm from a surface of the cover sheet (4) in the normal direction of the surface, and developing the alkaline processing liquid contained in the pod between the photosensitive element (3) and the cover sheet (4) to form a discharge image.

Embodiments of the present disclosure include optical elements and methods of forming the same using light-based patterning in solidified molten halide material. Other embodiments include systems that include such optical elements. The light-based patterning may be performed, for example, by forming silver-comprising nanostructure inclusions in a solidified silver halide film using ultraviolet (UV) laser exposure.

The application discloses a green preparation method of silver nanowires, which comprises the following steps: adding silver powder with a purity of greater than or equal to 99.9% into a polyvinylpyrrolidone aqueous solution, stirring for 20-40 min, adding metal halide MX n , uniformly mixing, reacting under an oxidizing condition at 70-90 DEG C for 7-9 h under a pH of 1-3, centrifuging the silver halide colloid, washing to obtain a precipitate, dispersing the precipitate in water to obtain a silver halide dispersion, adding a surfactant aqueous solution and a reducing agent aqueous solution into the silver halide dispersion in sequence to obtain a mixed solution, sealing the mixed solution for reaction at 100-130 DEG C for 20-24 h, and obtaining silver nanowires; the silver nanowires prepared by the green preparation method have an average diameter of 20-60 nm, a length-diameter ratio of 400-4000, a uniform morphology and a large length-diameter ratio.

The invention relates to a preparation method of a nano silver halide emulsion, which comprises the following steps: S1, fully dissolving deionized water, sodium bromide, a nucleating aid, a stabilizer and gelatin in a container with disc type stirring, and uniformly mixing to prepare a primary glue solution; uniformly mixing silver nitrate with deionized water to prepare a silver nitrate solution; uniformly mixing sodium bromide, potassium iodide and deionized water to prepare a halogen solution; s2, at a certain temperature, injecting a prepared silver nitrate solution and a halogen solution into the primary glue solution at the same time to obtain a mother solution containing nano silver halide; and S3, desalting the mother liquor containing the nano silver halide, supplementing glue, and sensitizing to obtain the nano silver halide emulsion. The nucleating aid and the stabilizer are added into the gelatin aqueous solution, the prepared nano silver halide particles are uniform, stable in storage and free of aggregation, and the emulsion can be desalted at normal temperature, is low in energy consumption and high in production efficiency, and is beneficial to continuous production.

The application provides a composite photocatalyst, a polypropylene material and a preparation method thereof and an automobile interior part, and the composite photocatalyst comprises a molecular sieve loaded silver halide / bismuth oxyhalide and an activated carbon fiber loaded transition metal oxide. The molecular sieve loaded silver halide / bismuth oxyhalide can form a nano structure with high catalytic activity, and can effectively decompose VOC such as benzene series in the polypropylene material under ultraviolet light irradiation; and the activated carbon fiber loaded transition metal oxide can chemically react with aldehyde VOC, and effectively decomposes VOC such as aldehyde in the polypropylene material. By compounding the polypropylene resin, the stabilizer, the composite photocatalyst and the acid absorbent, the polypropylene material prepared from the polypropylene material has low odor and VOC content.

Provided are: a composition that contains a leveling agent and a binder, the leveling agent including a polymer C, the polymer C containing a constituent unit A that includes two or more specific structures, and a specific constituent unit B, and containing a constituent unit that includes at least one functional group from among -OH, -COOH, -SO3H, and polyoxyalkylene groups in a proportion of 10 mass% or less based on the total mass of the polymer C, and the binder including a polymer provided with a specific constituent unit E; a silver halide photographic sensitive material; a diffusion-transfer-type silver halide photographic sensitive material; a display material; and a printing plate material.

The invention provides an industrial X-ray film and a preparation method thereof, and relates to the field of industrial X-ray films. The preparation method of the industrial X-ray film comprises the following steps: preparing a silver halide cubic particle emulsion, carrying out in-situ composite modification, preparing an emulsion layer coating liquid, and carrying out coating molding. According to the preparation method of the industrial X-ray film, the problems of obvious image granularity, transverse migration of silver atoms and combination of development centers between adjacent particles can be effectively solved, the utilization rate of X-ray photons is improved while the image resolution is improved, and the photosensitive sensitivity and the photosensitive response range are effectively improved; and the long-term stability, especially the pressure stability and the environmental stability, of the industrial X-ray film is improved.

This invention provides a lithium metal anode, its preparation method, and its application. The lithium metal anode includes a lithium metal matrix and an activation layer covering at least a portion of its surface; the lithium metal matrix includes lithium and silver; the activation layer includes lithium nitride and a first silver halide, wherein the first silver halide includes silver iodide. This invention provides an activation layer with specific chemical activity on the surface of a silver-containing lithium metal anode. Silver iodide can form lithium transport channels, activating dead lithium and improving the battery's cycle performance. Simultaneously, Li3N is a good SEI component, which can inhibit dendrite growth, isolate the electrolyte from contact with the anode, reduce active lithium loss, and further improve battery cycle performance. Furthermore, halogens existing in the form of silver halides are resistant to high voltage and not easily oxidized; therefore, high-voltage cathode materials with higher energy density can be selected to achieve a significant improvement in the cycle performance of high-energy-density lithium metal batteries.

The invention discloses a green preparation method of silver nanowires, which comprises the following steps: adding silver powder with the purity of more than or equal to 99.9% into a polyvinylpyrrolidone aqueous solution, stirring for 20-40 minutes, then adding metal halide MXn, uniformly mixing, reacting for 7-9 hours under the oxidation condition, the pH value of 1-3 and the temperature of 70-90 DEG C to obtain silver halide colloid, centrifuging and washing the silver halide colloid to obtain precipitate, and drying to obtain the silver nanowires. The invention discloses a preparation method of silver nanowires, which comprises the following steps: dissolving silver halide in water to obtain a precipitate, dispersing the precipitate in water to obtain a silver halide dispersion liquid, sequentially adding a surfactant aqueous solution and a reducing agent aqueous solution into the silver halide dispersion liquid to obtain a mixed solution, and carrying out sealed reaction on the mixed solution at 100-130 DEG C for 20-24 hours to obtain the silver nanowires. The average diameter of the silver nanowires prepared by the green preparation method is 20-60 nm, the length-diameter ratio is 400-4000, and the silver nanowires are uniform in morphology and good in stability. And the length-diameter ratio is large.

An implantable micro-biosensor includes a substrate, a first working electrode, at least one second working electrode, and at least one counter electrode. The first working electrode includes a first sensing section driven by a first potential difference to measure a physiological signal. The second working electrode includes a second sensing section driven by a second potential difference to consume an interfering substance. The counter electrode cooperates with the first working electrode to measure the physiological signal, cooperates with the second working electrode to consume the interfering substance, and selectively cooperates with the first or second working electrode to regenerate silver halide.

The invention belongs to the field of preparation and application of nano materials, and discloses a simple method for preparing small-size silver halide (AgX: X = Cl, Br and I) nano particles. The preparation method comprises the following steps: respectively dropwise adding an ethylene glycol solution of silver nitrate and an ethylene glycol solution of sodium iodide into a stirred oleylamine phase; the small-size silver iodide nanoparticles are prepared by a method for controlling precipitation of silver ions and iodide ions in an oleylamine phase. The method has the main advantages that (1) the process is simple, the operation is convenient, and only three steps of solution preparation, stirring control and centrifugal separation are needed; and (2) the preparation process has good repeatability and controllability, and the average size of the synthesized nanoparticles can be controlled within 10nm. And (3) the prepared silver iodide nanoparticles have the characteristics of large specific surface area, high active sites and the like, and are suitable for preparing photocatalysts, artificial rainfall agents, CT contrast agents and the like.

One aspect of the present invention provides an image forming method, a silver halide photographic light-sensitive material, and a monosheet laminate. The image forming method according to one aspect of the present invention is an image forming method having an exposure step for exposing a direct positive-type silver halide photographic light-sensitive material containing internal latent image-type silver halide grains that are not pre-covered on a support, wherein the exposure step includes an X-ray exposure step for forming a surface negative-type latent image and / or an internal latent image through exposure to X-rays. In addition, the silver halide photographic light-sensitive material according to another aspect of the present invention is a silver halide photographic light-sensitive material in which a surface negative-type latent image is formed by irradiating, with X-rays, a direct positive-type silver halide photographic light-sensitive material containing internal latent image-type silver halide grains that are not pre-covered on a support. The monosheet laminate according to yet another aspect of the present invention is a monosheet laminate in which the silver halide photographic light-sensitive material according to the present invention is used as a photosensitive element.

The invention relates to X-ray detectors comprising X-ray detector materials whose material composition includes salts of sulfonium cations, wherein the anions are preferably bismuth halides or bismuth-silver halides, in particular iodides. The invention further relates to the X-ray detector materials and their use for X-ray detection, together with a method for their production.

A compound having a structure represented by formula (Ia), and a composition, a functional material, a silver halide photographic photosensitive material or a diffusion transfer type silver halide photographic photosensitive material using the compound, and has at least one member selected from the group consisting of-OH,-COOH,-PO3H, {-OP (= O) (OH) 2},-CO2M1,-SO3M1,-NT1T2, an oxazolinyl group,-NG1G2G3E1, a group having a betaine structure, and a group having a polyoxyalkylene structure. In formula (Ia), R11, R12, and R13 each independently represent an alkyl group, an alkenyl group, or an aryl group.

This invention discloses a method for detecting Ag. + The present invention describes a reagent for the detection of C-reactive protein (CRP) and its application therein, wherein the reagent comprises gold nanoparticles. The present invention uses changes in eosin fluorescence intensity as the detection signal and silver halide as the medium, significantly increasing the detection rate of the same concentration of Ag through the co-precipitation effect of AuNPs. + The amount of eosin induced to adsorb, resulting in Ag + The detection limit was increased by 955 times; eosin, AuNPs, silver halides and aptamers (containing Ag) were also improved. + Induced C-C mismatched base pairs can be used for C-reactive protein detection, and can be used to detect the full range of C-reactive protein levels in blood. It also has the potential to be further applied to the detection of other low-concentration disease biomarkers in blood.

The invention discloses an aqueous zinc metal secondary battery based on a silver halide positive electrode, and belongs to the technical field of electrochemical energy storage, the aqueous zinc metal secondary battery comprises an electrolyte, a positive electrode, a negative electrode and a diaphragm, the positive electrode is a silver halide material and is used for carrying out a silver halide redox reaction on an interface between the positive electrode and the electrolyte; the negative electrode is a zinc sheet and is used for carrying out zinc metal redox reaction on an interface between the negative electrode and the electrolyte; and the diaphragm is arranged between the positive electrode and the negative electrode. By adopting the aqueous zinc metal secondary battery based on the silver halide positive electrode, the core problems that a traditional zinc-silver battery positive electrode material is easy to dissolve and poor in cycle performance are fundamentally solved, and a feasible technical path is provided for large-scale energy storage application.

The invention discloses a composite reference electrode and a preparation method thereof, and relates to the technical field of reference electrodes. According to the method, firstly, a silver bar / silver mesh composite substrate is prepared through blue laser welding, so that the specific surface area is increased; then, a rare earth-nano particle doped silver halide functional layer is formed on the substrate through a melt impregnation and anodic polarization process, and the structural stability and ionic conductivity of the silver halide functional layer are enhanced. Secondly, preparing double-ion imprinted polymer powder capable of specifically capturing sulfur ions and heavy metal ions, and compounding the double-ion imprinted polymer powder with sulfonated polyether ether ketone, thiolated graphene oxide, imidazole ionic liquid and other components to prepare interface strengthening slurry; and finally, carrying out oxygen plasma treatment on an electrode, coating the slurry, and carrying out curing, heat treatment and activation to obtain a finished product electrode. The reference electrode prepared by the method has good foreign ion interference resistance.

The application discloses a two-dimensional chiral lead-free silver bismuth-based double perovskite nanobelt and a preparation method thereof, and the specific preparation steps are as follows: S1: taking a chiral ammonium salt, silver halide and bismuth halide as raw materials for perovskite synthesis, taking a long-chain organic ammonium as a surface ligand, and taking N,N'-dimethylformamide as a good solvent to obtain a precursor solution; S2: taking a mixed solvent of chloroform and toluene or dichloromethane and toluene in a certain proportion as an anti-solvent, and injecting the precursor solution obtained in the step S1 into the anti-solvent to synthesize a chiral-enhanced lead-free silver bismuth double perovskite nanobelt. The application has the advantages of simple and convenient synthesis steps, and the obtained chiral lead-free double perovskite nanobelt has a relatively strong circular dichroism signal.

The invention discloses a preparation method and equipment of an optical component, a camera module and electronic equipment, and belongs to the technical field of optical lenses. The preparation method of the optical component, the optical component is used for the camera module, and the preparation method comprises the steps that the surface of a base material of the optical component is coated with a photosensitive emulsion, and the photosensitive emulsion comprises silver halide particles; the programmable light source is controlled to emit light so as to expose the photosensitive emulsion, and the light intensity of the light is in gradient distribution; the exposed photosensitive emulsion is subjected to developing treatment, so that silver halide particles of the photosensitive emulsion are reduced into silver particles, and the distribution density of the silver particles is matched with the light intensity of light; the photosensitive emulsion is subjected to fixing treatment, so that a shading layer is formed on the surface of the base material, and the light transmittance of the shading layer is in gradient distribution.

The utility model discloses a silver halide reference electrode of a circulating cooling water cathodic protection system in the technical field of circulating cooling water cathodic protection, which comprises a reference electrode body, a connecting core rod is embedded on the inner side of the body, two ends of the connecting core rod are respectively and fixedly connected with a protection block, the body is filled with chemical solution, and the chemical solution is filled with silver halide. A fixing cap is installed on the top of the body in a threaded connection mode, a connecting rod is installed on the inner side of the fixing cap in an extending mode, a protection block can limit, fix and protect the connecting core rod, the connecting core rod is prevented from being damaged, and the connecting core rod is installed and fixed through the fixing cap on the top of the body. The fixing cap is in threaded connection with the body and can limit and fix the extending connecting rod, the connecting rod can be installed and fixed again through the fixing piece, and meanwhile the sealing piece on the inner side of the fixing cap can seal the chemical solution in the body.

Provided are: a heat-developable photosensitive material having, on one surface of a support, an image-forming layer containing at least a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions, a binder, and a development accelerator represented by general formula (1); and a compound represented by general formula (2). R1, R3 and R4 are each independently H, Cl, F, an alkyl group, an alkoxy group, an amide group, an ester group or a sulfonyl group, and R5 is an alkyl group or a phenyl group. At least one among R1, R3, and R4 is F.

A mask element for flexographic printing is provided. The mask element may be used to prepare a mask having a mask image. The mask element may include: a transparent polymer carrier sheet; a substrate layer on the transparent polymeric carrier sheet, wherein the substrate layer comprises lecithin in a polymeric binder; and an imaging layer on the base layer, where the imaging layer includes a non-silver halide thermally ablatable material comprising an ablatable polymeric binder and a colorant (e.g., carbon black) and optionally an infrared (IR) dye. In some aspects, the mask element also includes a transparent topcoat layer on the imaging layer. The mask may include an imaging region in an imaging layer and a non-imaging region in the imaging layer.

This invention discloses an anti-counterfeiting card and its manufacturing and verification methods. The card includes a first substrate layer, an intermediate layer, and a second substrate layer stacked sequentially from top to bottom. A first printing layer is disposed on the side of the first substrate layer opposite to the intermediate layer. The card has mounting holes that pass sequentially through the first printing layer, the first substrate layer, the intermediate layer, and the second substrate layer. Both the top and bottom of the mounting hole are open. A colored film containing silver halide photosensitive emulsion is disposed within the mounting hole. An anti-counterfeiting image is disposed on the colored film, including at least one of the following: numbers, personal signature, portrait, and pattern. A second printing layer is disposed on the side of the second substrate layer opposite to the intermediate layer. The anti-counterfeiting card of this invention has good anti-counterfeiting effect and is convenient to manufacture and verify.