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A kind of Ni-doped CDS composite photocatalyst and its preparation method and application

A photocatalytic reaction and catalyst technology, applied in the field of photocatalysis, can solve problems such as low hydrogen production performance, and achieve the effects of avoiding photocorrosion, improving application value, and good photocatalytic cycle stability

Active Publication Date: 2022-05-10
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problem of low hydrogen production performance of photocatalysts in the prior art, the present invention provides a Ni-doped CdS composite photocatalyst and its preparation method and application. 101(Cr) CdS photocatalyst, so that it can effectively avoid photocorrosion and ensure the stability of its hydrogen production activity

Method used

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  • A kind of Ni-doped CDS composite photocatalyst and its preparation method and application
  • A kind of Ni-doped CDS composite photocatalyst and its preparation method and application
  • A kind of Ni-doped CDS composite photocatalyst and its preparation method and application

Examples

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Embodiment 1

[0038] Embodiment 1: A kind of composite photocatalyst of Ni doping CdS, carrier is Ni / MIL-101 (Cr), active component is the CdS of Ni doping, wherein the doping quality of Ni in Ni / MIL-101 (Cr) is 5%, the loading mass of CdS is 10%, and the mass of Ni doped on CdS is 1%;

[0039] The preparation method of the composite photocatalyst of Ni doping CdS, concrete steps are as follows:

[0040] (1) Uniformly disperse terephthalic acid, chromium nitrate nonahydrate, and deionized water, then add nickel nitrate hexahydrate, ultrasonically disperse, add hydrofluoric acid drop by drop and stir for 30 minutes to obtain reaction system C, and react system C Place it at 210°C and stir for 6 hours, cool to room temperature, wash with DMF and disperse in DMF solvent for purification, separate solid from liquid, wash with absolute ethanol and disperse in absolute ethanol to obtain anhydrous ethanol dispersion Solution A, absolute ethanol dispersion A was purified twice at 90°C, then washed...

Embodiment 2

[0043] Embodiment 2: A kind of composite photocatalyst of Ni doping CdS, carrier is Ni / MIL-101 (Cr), active component is the CdS of Ni doping, wherein the doping quality of Ni in Ni / MIL-101 (Cr) is 5%, the loading mass of CdS is 10%, and the mass of Ni doped on CdS is 0.5%;

[0044] The preparation method of the composite photocatalyst of Ni doping CdS, concrete steps are as follows:

[0045] (1) Uniformly disperse terephthalic acid, chromium nitrate nonahydrate, and deionized water, then add nickel nitrate hexahydrate, ultrasonically disperse, add hydrofluoric acid drop by drop and stir for 30 minutes to obtain reaction system C, and react system C Place it at 210°C and stir for 6 hours, cool to room temperature, wash with DMF and disperse in DMF solvent for purification, separate solid from liquid, wash with absolute ethanol and disperse in absolute ethanol to obtain anhydrous ethanol dispersion Liquid A, absolute ethanol dispersion A was purified twice at a temperature of ...

Embodiment 3

[0052] Embodiment 3: A kind of composite photocatalyst of Ni doping CdS, carrier is Ni / MIL-101 (Cr), active component is the CdS of Ni doping, wherein the doping quality of Ni in Ni / MIL-101 (Cr) is 5%, the loading mass of CdS is 10%, and the mass of Ni doped on CdS is 2%;

[0053] The preparation method of the composite photocatalyst of Ni doped with CdS in this example is basically the same as that of Example 1, except that the mass ratio of Ni / MIL-101 (Cr), cadmium acetate dihydrate and nickel nitrate hexahydrate is 475 :91.74:34.7.

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Abstract

The invention relates to a Ni-doped CdS composite photocatalyst, a preparation method and application thereof, and belongs to the technical field of photocatalysis. The carrier of the composite photocatalyst of Ni-doped CdS of the present invention is Ni / MIL-101 (Cr) or MIL-101 (Cr), and the active ingredient is Ni-doped CdS, wherein Ni in Ni / MIL-101 (Cr) The doping mass is 0.1%-10.0%, the loading mass of CdS is 1%-20%, and the mass of Ni doped on CdS is 0.1%-10.0%. The present invention adopts Ni-doped CdS photocatalyst supported on Ni / MIL-101(Cr) or MIL-101(Cr), so that it can effectively avoid photocorrosion and ensure the stability of its hydrogen production activity.

Description

technical field [0001] The invention relates to a Ni-doped CdS composite photocatalyst, a preparation method and application thereof, and belongs to the technical field of photocatalysis. Background technique [0002] CdS photocatalyst is a typical group II-IV direct bandgap semiconductor with a large and adjustable bandgap width, exhibits excellent photochemical properties and quantum efficiency in the visible light region, and is widely used in the field of photocatalysis, such as Catalytic hydrogen production, carbon dioxide reduction, pollutant degradation, etc. Due to CdS's suitable band gap (2.4eV) and good electron charge transfer ability, one-dimensional CdS nanorods with a large aspect ratio can exhibit unidirectional flow of hole-electron pairs and short surface transfer. distance. In theory, it should have better hydrogen production performance. [0003] However, CdS series photocatalysts are often accompanied by photocorrosion during the photocatalytic process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22B01J27/049B01J35/10C01B3/04
CPCB01J31/223B01J27/049C01B3/042C01B2203/0277B01J35/39B01J35/61Y02E60/36
Inventor 王家强和佼姜亮陈永娟罗子豪解丛嘉
Owner YUNNAN UNIV