0D/2D iron phosphide/cadmium sulfide composite photocatalyst, and preparation method and application thereof

A technology of cadmium sulfide and iron phosphide, which is applied in physical/chemical process catalysts, chemical instruments and methods, hydrogen/synthesis gas production, etc., can solve the problems of poor photocatalytic hydrogen production performance of cadmium sulfide, etc. High ratio of exposed active sites, improved catalytic activity, and superior material properties

Inactive Publication Date: 2020-02-04
黄春燕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a 0D / 2D iron phosphide / cadmium sulfide composite material for the problem of poor photocatalytic hydrogen production performance of a single cadmium sulfide

Method used

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  • 0D/2D iron phosphide/cadmium sulfide composite photocatalyst, and preparation method and application thereof
  • 0D/2D iron phosphide/cadmium sulfide composite photocatalyst, and preparation method and application thereof
  • 0D/2D iron phosphide/cadmium sulfide composite photocatalyst, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 200 mg of 2D cadmium sulfide nanosheets prepared by the hydrothermal method were dissolved in 200 mL of deionized water to make a solution with a concentration of 1 g / L, which was ultrasonicated in an ultrasonic machine for 2 h, keeping the water temperature at about 15 °C. Then add 4.6 mL of Fe(NO 3 ) 3 9H 2 O solution. React for 3 h under dark conditions. After the reaction, the solution was allowed to stand for 30 minutes, then the supernatant was poured out, and the centrifuge tubes were washed alternately with deionized water and alcohol. The speed of the centrifuge was set at 8000r / min. Finally, the washed precipitate in the centrifuge tube was dried in an oven at 60° C. for 15 h. NaH 2 PO 2 According to the mass ratio of the obtained dry matter to 10:1, put them into the upper tuyere and the lower tuyere of the porcelain boat respectively, and place them in a tube furnace for calcination. The calcination time is 2 h, and the heating rate is 2 h. o C / min, ...

Embodiment 2

[0031] 200 mg of 2D cadmium sulfide nanosheets prepared by the hydrothermal method were dissolved in 200 mL of deionized water to make a solution with a concentration of 1 g / L, which was ultrasonicated in an ultrasonic machine for 2 h, keeping the water temperature at about 15 °C. Then add 11.6 mL of Fe(NO 3 ) 3 9H 2 O solution. React for 3 h under dark conditions. After the reaction, the solution was allowed to stand for 30 minutes, then the supernatant was poured out, and the centrifuge tubes were washed alternately with deionized water and alcohol. The speed of the centrifuge was set at 8000r / min. Finally, the washed precipitate in the centrifuge tube was dried in an oven at 60° C. for 15 h. NaH 2 PO 2 According to the mass ratio of the obtained dry matter to 10:1, put them into the upper tuyere and the lower tuyere of the porcelain boat respectively, and place them in a tube furnace for calcination. The calcination time is 2 h, and the heating rate is 2 h. o C / min,...

Embodiment 3

[0035]200 mg of 2D cadmium sulfide nanosheets prepared by the hydrothermal method were dissolved in 200 mL of deionized water to make a solution with a concentration of 1 g / L, which was ultrasonicated in an ultrasonic machine for 2 h, keeping the water temperature at about 15 °C. Then add 18.6 mL of Fe(NO 3 ) 3 9H 2 O solution. React for 3 h under dark conditions. After the reaction, the solution was allowed to stand for 30 min, and the supernatant was poured out, and washed alternately with deionized water and alcohol in a centrifuge tube. The speed of the centrifuge was set at 8000 r / min. Finally, the washed precipitate in the centrifuge tube was dried in an oven at 60° C. for 15 h. NaH 2 PO 2 According to the mass ratio of the obtained dry matter to 10:1, put them into the upper tuyere and the lower tuyere of the porcelain boat respectively, and place them in a tube furnace for calcination. The calcination time is 2 h, and the heating rate is 2 h. o C / min, the prote...

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Abstract

The invention belongs to the technical field of inorganic nanomaterial preparation, and discloses a zero-dimensional (0D) / two-dimensional (2D) iron phosphide nanoparticle / cadmium sulfide nanosheet composite visible light photocatalyst, and a preparation method and application thereof. 2D cadmium sulfide is mainly compounded, a situ one-step phosphating method is used for loading 0D iron phosphideparticles onto 2D cadmium sulfide nanosheets, the separation efficiency of photon-generated carriers of the 2D cadmium sulfide nanosheets is enhanced, and thus the catalytic activity is greatly improved. The prepared 0D / 2D iron phosphide / cadmium sulfide composite visible light photocatalyst is clear in structure and easy to product, good photocatalytic water splitting hydrogen production properties are achieved, and the hydrogen production efficiency is significantly improved; and the preparation method is simple, reliable and good in repeatability, and has good application prospects.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic nanometer materials, and in particular relates to a preparation method of a photocatalyst iron phosphide / cadmium sulfide composite material. [0002] technical background [0003] The conversion of solar energy into directly usable hydrogen energy by photocatalytic water splitting reaction is considered to be an important solution to the energy crisis. Among them, the selection of photocatalyst is particularly important for photocatalytic reactions. Recently, a large number of semiconductor-based photocatalysts have been used for photocatalytic hydrogen production, such as: graphitic carbon nitride (g-C 3 N 4 ), titanium dioxide (TiO 2 ), cadmium sulfide (CdS), etc. However, the poor light absorption ability and low carrier utilization seriously restrict the use of photocatalysts. [0004] Cadmium sulfide (CdS) is considered to be an excellent photocatalyst due to its suitable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185B01J35/02C01B3/04
CPCB01J27/1853B01J35/004B01J35/0066B01J35/026C01B3/042C01B2203/0277Y02E60/36
Inventor 黄春燕
Owner 黄春燕
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