Synthesis method of nano-zinc sulfide/bamboo charcoal photocatalytic material by hydrothermal process

Abstract

The invention discloses a synthesis method of a nano-zinc sulfide / bamboo charcoal photocatalytic material by a hydrothermal process. The method comprises the following steps: (1) weighing 0.0028-0.0560g of zinc sulfate heptahydrate and 0.05-0.15g of polyethylene glycol-6000 and dissolving in 30ml of distilled water, and stirring with an electromagnetic stirrer until being dissolved at low speed and room temperature to obtain a uniform mixed liquid; (2) weighing 0.1-2.0g of bamboo charcoal and placing in the mixed liquid, stirring for about 3 hours, adding 0.0015-0.0300g of thiourea2, and continuously stirring for about 3 hours; and (3) leading the solution obtained in step (2) into a 40ml of high-pressure kettle lined with polytetrafluoroethylene, reacting in a digital display blast drying oven at the constant temperature of 150-160 DEG C for 10-12 hours, naturally cooling to room temperature, filtering and drying to obtain the nano-zinc sulfide / bamboo charcoal photocatalytic material, wherein, ZnS nanoparticles in the nano-zinc sulfide / bamboo charcoal photocatalytic material have hexagonal crystal phases and take a spherical shape, and the average particle size thereof is about 100nm. The preparation method of the invention is simple and feasible and has low cost and high yield.

Description

technical field [0001] The invention relates to a method for synthesizing a nanometer zinc sulfide / bamboo charcoal photocatalytic material by a hydrothermal method. Background technique [0002] As an important wide-bandgap semiconductor, ZnS nanomaterials have been widely used in photoconductive materials, photoluminescence, photocatalysis and other fields due to their unique properties, especially in the field of photocatalysis. It has the advantages of high catalytic activity, stable chemical properties, non-toxic and non-corrosive, low cost, and long service life, but there are difficulties in separation and recovery of powdered nano-zinc sulfide during use, and the utilization rate of light energy is not high; The practical application of catalytic technology, and bamboo charcoal, as a new type of environmental protection material and functional material, because of its developed pore structure, large specific surface area, strong adsorption force, and adsorption functi...

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Problems solved by technology

[0002] As an important wide-bandgap semiconductor, ZnS nanomaterials have been widely used in photoconductive materials, photoluminescence, photocatalysis and other fields due to their unique properties, especially in the field of photocatalysis. It has the advantages of high catalytic activity, stable chemical properties, non-toxic and non-corrosive, low cost, and long service life, but there are difficulties in separation and recovery of powdered nano-zinc sulfide during use, and the utilization rate of light energy is not high; The practical application of catalytic technology, and bamboo charcoal, as a new type of environmental protection material and functional material, because of its developed pore structure, large specific surface area, strong adsorption force, and adsorption function, it can be used as a good carrier. Bamboo charcoal is used as a nanometer The carrier of zinc sulfide is conducive to the recycling of catalysts and reduces the cost of treatment. Therefore, it is of great significance to study the synthesis, characterization and photocatalytic performance of nano-zinc sulfide / bamboo charcoal composites.