Preparation method of Fe-doped ZnS-CuS heterojunction photocatalytic hydrogen production material

Abstract

The invention belongs to the technical field of photocatalytic hydrogen production, and discloses a Fe-doped ZnSCuS heterojunction photocatalytic hydrogen production material. ZnS nanoflowers have ultrahigh specific surface area, iron-doped ZnS nanoflowers are obtained by using the ZnS nanoflowers as a substrate and ferric nitrate as an iron source, and then with copper acetate and thiourea used as raw materials, iron-doped ZnS nanoflower loaded CuS hollow nanospheres can be obtained; the iron-doped ZnS nanoflower loaded CuS hollow nanospheres have ultrahigh specific surface area, so that morephotocatalytic hydrogen production active sites are further exposed; Fe is doped into crystal lattices of ZnS, and therefore, ZnS forbidden band width is decreased, absorption band edge red shift isreduced, the light response range is widened, the absorption rate of visible light is increased, meanwhile, recombination of photo-induced electron holes is reduced; ZnS and CuS form heterojunctions,the heterojunctions can serve as separation sites, so that photo-induced electrons transition to the surface of the CuS from a ZnS valence band; and thus, the photo-induced electron hole separation efficiency is further improved, the Fe-doped ZnSCuS heterojunction photocatalytic hydrogen production material has excellent photocatalytic hydrogen production performance.

Description

technical field

[0001] The invention relates to the technical field of photocatalytic hydrogen production, in particular to a preparation method of Fe-doped ZnS-CuS heterojunction photocatalytic hydrogen production material. Background technique

[0002] With the development of society and the extensive use of fossil fuels, the problems of environmental pollution and energy shortages have become increasingly prominent. Therefore, people need a new clean and renewable energy to replace fossil energy. Clean energy includes solar energy, wind energy, tidal energy, and hydrogen. Among them, hydrogen energy has the advantages of high combustion calorific value, green and pollution-free, and is a clean energy with broad application prospects. At present, hydrogen production includes electrolysis of water to produce hydrogen and photocatalytic water decomposition to produce hydrogen. Among them, photocatalytic decomposition Hydrogen production from water has high efficiency, low co...

Examples

Embodiment 1

[0028] (1) Add deionized water, disodium edetate, surfactant cetyltrimethylammonium bromide, zinc acetate to the reaction bottle, disperse evenly, add sodium hydroxide, disperse evenly, stir and add Sulfur, evenly dispersed, moved into the reaction kettle and built into the hydrothermal instrument. The hydrothermal instrument includes a main body. The inner part of the main body is connected with a heat insulation layer. The air pipe, the top of the intake pipe is movably connected with a heating device, the inside of the heating device is movably connected with a resistance wire, the top of the heating device is movably connected with an outlet pipe, the right side of the main body is movably connected with a dehumidification pipe, and the right side of the dehumidification pipe is movable A condensing device is connected, the right side of the condensing device is movably connected with a water outlet, and the bottom of the water outlet is movably connected with a beaker, rea...

Embodiment 2

[0032] (1) Add deionized water, ethylenediaminetetraacetic acid disodium, surfactant cetyltrimethylammonium bromide, zinc acetate to the reaction bottle, disperse evenly, add sodium hydroxide, disperse evenly, stir and add Sulfur, evenly dispersed, moved into the reaction kettle and built into the hydrothermal instrument. The hydrothermal instrument includes a main body. The air pipe, the top of the intake pipe is movably connected with a heating device, the inside of the heating device is movably connected with a resistance wire, the top of the heating device is movably connected with an outlet pipe, the right side of the main body is movably connected with a dehumidification pipe, and the right side of the dehumidification pipe is movable A condensing device is connected, the right side of the condensing device is movably connected with a water outlet, and the bottom of the water outlet is movably connected with a beaker, react at 160°C for 6 hours, cool to room temperature, ...

Embodiment 3

[0036] (1) Add deionized water, disodium edetate, surfactant cetyltrimethylammonium bromide, zinc acetate to the reaction bottle, disperse evenly, add sodium hydroxide, disperse evenly, stir and add Sulfur, evenly dispersed, moved into the reaction kettle and built into the hydrothermal instrument. The hydrothermal instrument includes a main body. The inner part of the main body is connected with a heat insulation layer. The air pipe, the top of the intake pipe is movably connected with a heating device, the inside of the heating device is movably connected with a resistance wire, the top of the heating device is movably connected with an outlet pipe, the right side of the main body is movably connected with a dehumidification pipe, and the right side of the dehumidification pipe is movable A condensing device is connected, the right side of the condensing device is movably connected with a water outlet, and the bottom of the water outlet is movably connected with a beaker, rea...

technical field

[0001] The invention relates to the technical field of photocatalytic hydrogen production, in particular to a preparation method of Fe-doped ZnS-CuS heterojunction photocatalytic hydrogen production material. Background technique

[0002] With the development of society and the extensive use of fossil fuels, the problems of environmental pollution and energy shortages have become increasingly prominent. Therefore, people need a new clean and renewable energy to replace fossil energy. Clean energy includes solar energy, wind energy, tidal energy, and hydrogen. Among them, hydrogen energy has the advantages of high combustion calorific value, green and pollution-free, and is a clean energy with broad application prospects. At present, hydrogen production includes electrolysis of water to produce hydrogen and photocatalytic water decomposition to produce hydrogen. Among them, photocatalytic decomposition Hydrogen production from water has high efficiency, low co...

Examples

Embodiment 1

[0028] (1) Add deionized water, disodium edetate, surfactant cetyltrimethylammonium bromide, zinc acetate to the reaction bottle, disperse evenly, add sodium hydroxide, disperse evenly, stir and add Sulfur, evenly dispersed, moved into the reaction kettle and built into the hydrothermal instrument. The hydrothermal instrument includes a main body. The inner part of the main body is connected with a heat insulation layer. The air pipe, the top of the intake pipe is movably connected with a heating device, the inside of the heating device is movably connected with a resistance wire, the top of the heating device is movably connected with an outlet pipe, the right side of the main body is movably connected with a dehumidification pipe, and the right side of the dehumidification pipe is movable A condensing device is connected, the right side of the condensing device is movably connected with a water outlet, and the bottom of the water outlet is movably connected with a beaker, rea...

Embodiment 2

[0032] (1) Add deionized water, ethylenediaminetetraacetic acid disodium, surfactant cetyltrimethylammonium bromide, zinc acetate to the reaction bottle, disperse evenly, add sodium hydroxide, disperse evenly, stir and add Sulfur, evenly dispersed, moved into the reaction kettle and built into the hydrothermal instrument. The hydrothermal instrument includes a main body. The air pipe, the top of the intake pipe is movably connected with a heating device, the inside of the heating device is movably connected with a resistance wire, the top of the heating device is movably connected with an outlet pipe, the right side of the main body is movably connected with a dehumidification pipe, and the right side of the dehumidification pipe is movable A condensing device is connected, the right side of the condensing device is movably connected with a water outlet, and the bottom of the water outlet is movably connected with a beaker, react at 160°C for 6 hours, cool to room temperature, ...

Embodiment 3

[0036] (1) Add deionized water, disodium edetate, surfactant cetyltrimethylammonium bromide, zinc acetate to the reaction bottle, disperse evenly, add sodium hydroxide, disperse evenly, stir and add Sulfur, evenly dispersed, moved into the reaction kettle and built into the hydrothermal instrument. The hydrothermal instrument includes a main body. The inner part of the main body is connected with a heat insulation layer. The air pipe, the top of the intake pipe is movably connected with a heating device, the inside of the heating device is movably connected with a resistance wire, the top of the heating device is movably connected with an outlet pipe, the right side of the main body is movably connected with a dehumidification pipe, and the right side of the dehumidification pipe is movable A condensing device is connected, the right side of the condensing device is movably connected with a water outlet, and the bottom of the water outlet is movably connected with a beaker, rea...

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