63 results about "Bismuth iodide" patented technology

The invention discloses a method for preparing a molybdenum-doped bismuth vanadate photoelectrode modified by cobalt phosphide. First, a bismuth iodide oxide photoelectrode is prepared on the surface of a conductive glass by a deposition method, and a vanadium source and molybdenum are added dropwise on the bismuth iodide oxide photoelectrode. source solution, after annealing and cleaning, the molybdenum-doped bismuth vanadate photoelectrode was obtained, and then in the three-electrode system, cobalt phosphide was deposited on the surface of the molybdenum-doped bismuth vanadate photoelectrode through photo-assisted electrodeposition, and the new bismuth vanadate photoelectrode was obtained. The invention also discloses the application of the composite bismuth molybdovanadate photoelectrode in photoelectric catalytic water decomposition. The photoelectrode prepared by the present invention is used for photoelectrocatalytic water splitting to produce hydrogen. Doping molybdenum can effectively increase the concentration of carriers and increase the photocurrent, while electrodeposition of cobalt and phosphorus can effectively delay the recombination loss in the photoelectrode and increase the The lifetime of the photogenerated carriers can promote the oxygen evolution reaction on the surface of the photoelectrode, thereby improving the solar-to-hydrogen conversion efficiency of the semiconductor photoelectrode.

A dual-functional negative electrode for an all-vanadium redox flow battery, the dual-functional negative electrode is based on a carbon material, and its surface is modified with a Bi-containing electrocatalyst, and the Bi-containing electrocatalyst is Bi simple substance, Bi2O3, Bi halide or Bi One or more than two kinds of metal salts; Bi halides are bismuth fluoride, bismuth chloride, bismuth bromide or bismuth iodide; Bi metal salts are bismuth sulfate, bismuth nitrate, bismuth phosphate, bismuth formate or bismuth acetate . This electrode is suitable for the negative electrode of the all-vanadium redox flow battery, which can greatly improve the electrocatalytic activity and electrochemical reversibility of the electrode material for the V2+ / V3+ redox reaction, reduce the charge transfer resistance; it also has a high hydrogen evolution overpotential, It can inhibit the occurrence of hydrogen evolution reaction and prolong the working life of the battery.

The present invention relates to the TLC identification method of eucommia ulmoides and preparations containing eucommia and the application of bismuth potassium iodide solution. The TLC identification method of eucommia ulmoides comprises the following steps: (1) making the test sample and the standard product of eucommia ulmoides into test samples respectively solution and contrast solution; (2) need testing solution and contrast solution are spotted respectively on the thin-layer plate, develop with developing agent; (3) thin-layer plate is taken out after developing, dry, and spray chromogenic agent bismuth iodide Potassium solution, air-dried or oven-dried, and placed until the spots develop clear color, so as to realize TLC identification of Eucommia ulmoides. The bismuth potassium iodide solution selected in the present invention is particularly suitable for color development of the eucommia medicinal material and the eucommia-containing preparation, has the advantages of good reproducibility, strong specificity, simplicity and practicality, and can effectively control the quality of the eucommia medicinal material and the eucommia-containing preparation.

The invention relates to a preparation method of a Z-form bismuth-based photocatalyst, and belongs to the technical field of nanomaterials. By adding the bismuth salt and the iodine source into the solvent to dissolve completely or to disperse uniformly, a reaction solution containing the precursor of bismuth iodide is obtained after sufficient reaction; the composite phase substance and the reducing agent are added to the reaction solution prepared in step (1) to react , obtain a reaction solution with a reducing chemical atmosphere, containing bismuth iodide-composite phase precursor; heat the reaction solution obtained in step (2) with a solvent, and separate and dry the reaction solution after the solvent heat treatment to obtain the catalyst. . The catalyst can retain a high redox potential on the basis of effectively separating electron-hole pairs; compared with the heterojunction structure obtained without adding a reducing agent, it has the ability to complete the photocatalytic degradation of organic compounds such as rhodamine B faster. Effect.

The invention relates to synthesis of a bismuth iodine hybrid material and application to preparation of a BiOI nano-sheet, and aims to synthesize the bismuth iodine hybrid material, wherein the bismuth iodine hybrid material can be directly applied to hydrolysis to prepare the BiOI nano-sheet. A bismuth iodine based hybrid (Habtz)BiI4 is prepared by taking bismuth iodide and 2-aminobenzothiazoleas reaction raw materials and taking mixed liquid of ethanol and hydroiodic acid as a reactant and a solvent and under the solvothermal condition, wherein the abtz is 2-aminobenzothiazole. The bismuthiodine hybrid material is simple to prepare, the raw materials are low in price and the yield is high. The hybrid material serving as a precursor can be hydrolyzed rapidly without adding other reaction raw materials in distilled water and without adjusting the pH value of the reaction, so that simple and efficient preparation of the BiOI nano-sheet is realized.

The invention discloses synthesis of a bismuth iodine based inorganic-organic hybrid material and an application of the hybrid material in selective color fading of rhodamine B. The purpose of the invention is to synthesize the inorganic-organic hybrid material (Habtz)BiI4 which can conveniently, quickly, efficiently and selectively fade color of the rhodamine B, wherein abtz represents 2-aminobenzothiazole. Bismuth iodide, 2-aminobenzothiazole, ethanol and hydroiodic acid can be selected as reaction raw materials, and a single crystal of the compound (Habtz)BiI4 is obtained under the solvothermal synthesis condition. The (Habtz)BiI4 disclosed by the invention has excellent properties, and can be used for chemical selective treatment of the rhodamine B in a dye waste liquid without any energy provided by the outside.