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Sulfur-indium-zinc composite material with homogeneous heterogeneous knot, as well as preparation method and application of material

A composite material, indium zinc sulfide technology, applied in catalyst activation/preparation, gallium/indium/thallium compound, hydrogen production and other directions, can solve the problem of low lattice matching, achieve simple and easy control of the process and excellent performance , the effect of large application potential

Inactive Publication Date: 2014-04-23
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the degree of lattice matching of heterogeneous materials is low, and it is difficult to form a heterojunction in a stable and close combination.

Method used

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  • Sulfur-indium-zinc composite material with homogeneous heterogeneous knot, as well as preparation method and application of material
  • Sulfur-indium-zinc composite material with homogeneous heterogeneous knot, as well as preparation method and application of material
  • Sulfur-indium-zinc composite material with homogeneous heterogeneous knot, as well as preparation method and application of material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] ZnCl 2 (10 mmol), In(NO 3 ) 3 4.5H 2 O (20 mmol), thioacetamide (40 mmol), and polyvinylpyrrolidone (2 g) were added to a polytetrafluoroethylene reactor, and then 70 ml of distilled water / ethanol / tetrachloromethane (volume ratio 1:1:0.2) in the mixture, put the reactor on a magnetic stirrer, adjust the pH value to 2.3, stir for 120 min, put it in an oven at 120 °C for 6 h, and wait for the reactor to cool to room temperature, The mixture in the reaction kettle was taken out, centrifuged, and the obtained precipitate was washed several times with distilled water and ethanol, and then dried in an oven at 60 ° C to obtain an orange powder precursor; the prepared sulfur indium zinc precursor Place it in a tube furnace for calcination under a nitrogen atmosphere, the temperature is controlled at 400°C, and it is kept for 4 hours to obtain a homogeneous and heterogeneous sulfur-indium-zinc composite.

Embodiment 2

[0024] ZnCl 2 (20 mmol), In(NO 3 ) 3 4.5H 2 O (40 mmol), thioacetamide (80 mmol), and polyvinylpyrrolidone (0.2 g) were added to a polytetrafluoroethylene reactor, and then 70 ml of distilled water / ethanol / tetrachloromethane (volume ratio 1:1:0.2) in the mixture, put the reactor on a magnetic stirrer, adjust the pH value to 2.3, stir for 120 min, put it in an oven at 120 °C for 6 h, and wait for the reactor to cool to room temperature, The mixture in the reaction kettle was taken out, centrifuged, and the obtained precipitate was washed several times with distilled water and ethanol, and then dried in an oven at 60 ° C to obtain an orange powder precursor; the prepared sulfur indium zinc precursor Place it in a tube furnace for calcination under a nitrogen atmosphere, the temperature is controlled at 400°C, and it is kept for 4 hours to obtain a homogeneous and heterogeneous sulfur-indium-zinc composite.

Embodiment 3

[0026] ZnCl 2 (10 mmol), In(NO 3 ) 3 4.5H 2 O (20 mmol), thioacetamide (40 mmol), and polyvinylpyrrolidone (1 g) were added to a polytetrafluoroethylene reactor, and then 70 ml of distilled water / ethanol / tetrachloromethane (volume ratio 1:1:0.2) in the mixture, put the reactor on a magnetic stirrer, adjust the pH value to 6, stir for 120 min, put it in an oven at 120 °C for 6 h, and wait for the reactor to cool to room temperature, The mixture in the reaction kettle was taken out, centrifuged, and the obtained precipitate was washed several times with distilled water and ethanol, and then dried in an oven at 60 ° C to obtain an orange powder precursor; the prepared sulfur indium zinc precursor Placed in a tube furnace for calcination under a nitrogen atmosphere, the temperature was controlled at 300 ° C, and kept for 4 h to obtain a homogeneous heterogeneous sulfur indium zinc compound.

[0027]From figure 1 It can be seen that Zn exists in the form of +2 valence, In exis...

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Abstract

The invention discloses a sulfur-indium-zinc composite material with a homogeneous heterogeneous knot, as well as a preparation method and an application of the material and belongs to the technical field of material preparation and photocatalysis. The sulfur-indium-zinc composite material disclosed by the invention has a high specific surface area; the phase knot composed of a hexagonal phase and a cubic phase can be used for effectively increasing the separation efficiency of photon-generated carriers of a system, so that the light catalytic activity of visible light of ZnIn2S4 is improved and the sulfur-indium-zinc composite material can be used for efficiently degrading organic pollutants, carrying out photocatalytic sterilization, photolyzing water to prepare hydrogen and carrying out the photocatalysis to selectively oxidize alcohols. The preparation process of a catalyst is simple and low in cost; during the production processing, the green and environment-friendly effects can be realized and the stability of the catalyst is high; the actual production requirements are met and the application potential is great.

Description

technical field [0001] The invention belongs to the technical field of material preparation and photocatalysis, and specifically relates to a sulfur-indium-zinc composite material with a heterogeneous junction and a preparation method and application thereof. Background technique [0002] Environmental pollution and energy crisis are major issues faced by human beings in the 21st century and need to be solved urgently. Due to its thorough reaction, mild reaction conditions, redox ability, high efficiency and energy saving, and no secondary pollution, photocatalytic technology has rapidly developed into a new technology that can use solar energy for environmental purification and energy conversion in recent years. It has become the most concerned research hotspot at present. [0003] Currently, TiO 2 Semiconductor photocatalysts mainly have key scientific and technological problems such as low photon quantum efficiency and low solar energy utilization, which greatly restric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J35/02B01J37/10C01G15/00C02F1/30C01B3/04A62D3/17C02F103/30A62D101/47B01J35/00
CPCY02W10/37Y02E60/36
Inventor 梁诗景林秋燕祝淑颖李沥毕进红
Owner FUZHOU UNIV
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