Ethylene Glycol CAS 107-21-1

CN201110391363.9 discloses a preparation method of flower-shaped γ-bismuth oxide powder, comprising the following steps: firstly adding Bi(NO3)3·5H2O into ethylene glycol, stirring to dissolve it; stirring NaOH solution, water and polyethylene glycol are added to the configured bismuth salt solution in turn, and stirred to obtain a reaction solution; the configured reaction solution is added to a hydrothermal reactor with a polytetrafluoroethylene substrate, and in a closed state, Bi2O3 is generated in a closed state. Hydrothermal reaction; the obtained material is cooled to room temperature, and then suction filtration, washing and drying are performed in sequence to obtain the finished product of γ-Bi2O3 powder. The γ-Bi2O3 prepared by the invention has a relatively uniform morphology and good dispersibility; its microstructure is quasi-spherical, which is further a flower-shaped sphere, with a diameter of 1-25 μm, and a large specific surface area of ​​the flower-shaped sphere; The thickness of the nanosheets is below 100 nm, the visible light response is good and the photocatalytic activity is high.

CN201210500911.1 discloses a preparation method of flake nano silver powder, which is obtained by reacting a silver salt aqueous solution containing a surfactant and a ferrous salt solution at a temperature of 0-100°C. The silver salt is silver nitrate, silver sulfate or silver acetate. The surfactant is polyvinylpyrrolidone, cetyltrimethylammonium bromide, sodium lauryl sulfate or polyethylene glycol. The ferrous salt is ferrous ammonium sulfate or ferrous sulfate. The weight ratio of the silver salt to the ferrous salt is 2:1 to 1:4. The weight ratio of the silver salt to the surfactant is 50:1 to 1:2. The flake nano-silver powder finally obtained by the method of the invention is single in appearance and high in purity. The method of the invention also has the advantages of short reaction time, high efficiency, mild reaction conditions, simple process and equipment, low production cost, simple operation, green and pollution-free, etc., and is especially suitable for industrialized large-scale production.