Method of preparing CdS nano particles through room-temperature solid-phase reaction

Abstract

The invention discloses a method of preparing CdS nano particles through a room-temperature solid-phase reaction. The method includes the following steps: weighing CdSO4.8H2O, thiourea and NaOH according to the mass ratio of 1:1.6:6; finely grinding the CdSO4.8H2O and the thiourea respectively and grinding the CdSO4.8H2O and the thiourea with NaOH; adding bovine serum albumin and continuously grinding the mixture for 30 min to obtain a fine bright light-yellow thick substance; washing and filtering the thick substance with distilled water and anhydrous ethanol alternately; and naturally drying the mixture to obtain a bright light-yellow powder which is the CdS nano particles. The method is mild in reaction condition, is simple in operation and is green and energy-saving in production. The CdS nano particles are high in purity, are small in size, are uniform in granularity and are good in dispersion property, are high in oriented degree and are excellent in crystal from and crystal lattice.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a method for preparing CdS nanoparticles by solid phase reaction at room temperature. Background technique [0002] Because CdS nanoparticles have great application potential in light, electricity, magnetism, catalysis, etc. (such as light-emitting diodes, solar cells, sensors, photocatalysis, etc.), people have paid great attention to them. methods have been reported successively. The preparation of controllable, high-density and uniform particle size nanomaterials is the goal of preparation and synthesis process research. In the past ten years, people have used many methods to prepare nano-cadmium sulfide, mainly including precipitation method, sol-gel method, microemulsion method, template synthesis method, etc., and most of them are carried out in gas and liquid phases. Solid-phase chemical reaction at room temperature is a cheap and simple new metho...

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Problems solved by technology

The low photocatalytic degradation efficiency of methyl orange has always been the direction of people's research. In the past, a large number of experiments were carried out under the irradiation of ultraviolet lamps, which is inconsistent with practical applications (only 5% of sunlight is ultraviolet light, and the photocatalyst must be visible light. Responsive type), although some people have studied the visible light photodegradation experiment, the 4h catalytic effect is above 80%, it can be seen that the result is not satisfactory

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