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Preparation method of supported photocatalyst containing Mn0.5Cd0.5S and Cu2O

A photocatalyst and supported technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of limited photocatalytic activity and low quantum efficiency, Achieve good activity and high quantum efficiency

Active Publication Date: 2019-12-20
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But since Mn 0.5 Cd 0.5 The rapid combination of electrons and holes of S solid solution under the action of light has low quantum efficiency, which limits its photocatalytic activity.

Method used

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  • Preparation method of supported photocatalyst containing Mn0.5Cd0.5S and Cu2O
  • Preparation method of supported photocatalyst containing Mn0.5Cd0.5S and Cu2O
  • Preparation method of supported photocatalyst containing Mn0.5Cd0.5S and Cu2O

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Experimental program
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Effect test

Embodiment 1

[0031] 1) MoO 2 Preparation: weigh 0.288g molybdenum trioxide and 0.095g molybdenum powder and dissolve in 40mL deionized water, then add 0.2g ammonium chloride, stir at room temperature for 2 hours, then transfer the mixed solution to a 50mL polytetrafluoroethylene kettle , hydrothermal reaction was carried out at 200°C for 15 hours, and after the reaction was completed, it was cooled to room temperature, and the obtained product was filtered and washed with deionized water and absolute ethanol, and vacuum-dried to obtain MoO 2 powder.

[0032] (2) Mn 0.5 Cd 0.5 S / MoO 2 Preparation of composite sample: Weigh 1.442g L-cystine and dissolve it in 40mL deionized water, then adjust the solution with 6M NaOH to make the solution pH=10.6 to form a mixed solution of A; weigh 0.266g cadmium acetate dihydrate and 0.245g dihydrate Dissolve manganese acetate in 25mL deionized water to form a mixed solution of B; weigh 0.0011g MoO obtained in step (1) 2 Disperse the powder in 10mL of...

Embodiment 2

[0038] 1) MoO 2 Preparation: weigh 0.144g molybdenum trioxide and 0.0475g molybdenum powder and dissolve in 40mL deionized water, then add 0.1g ammonium chloride, stir at room temperature for 2 hours, then transfer the mixed solution to a 50mL polytetrafluoroethylene kettle , hydrothermal reaction was carried out at 200°C for 15 hours, and after the reaction was completed, it was cooled to room temperature, and the obtained product was filtered and washed with deionized water and absolute ethanol, and vacuum-dried to obtain MoO 2 powder.

[0039] (2) Mn 0.5 Cd0.5 S / MoO 2 Preparation of composite sample: Weigh 2.884g L-cystine and dissolve it in 40mL deionized water, then adjust the solution with 6M NaOH to make the solution pH=10.6 to form A mixed solution; weigh 0.532g cadmium acetate dihydrate and 0.49g Manganese acetate dihydrate was dissolved in 25mL deionized water to form a mixed solution of B; 0.0069g MoO obtained in step (1) was weighed 2 Disperse the powder in 10m...

Embodiment 3

[0042] 1) MoO 2 Preparation: Weigh 0.216g molybdenum trioxide and 0.0713g molybdenum powder and dissolve in 40mL deionized water, then add 0.15g ammonium chloride, stir at room temperature for 2 hours, then transfer the mixed solution to a 50mL polytetrafluoroethylene kettle , hydrothermal reaction was carried out at 200°C for 15 hours, and after the reaction was completed, it was cooled to room temperature, and the obtained product was filtered and washed with deionized water and absolute ethanol, and vacuum-dried to obtain MoO 2 powder.

[0043] (2) Mn 0.5 Cd 0.5 S / MoO 2 Preparation of composite sample: Weigh 1.0815g L-cystine and dissolve it in 40mL deionized water, then adjust the solution with 6M NaOH to make the solution pH=10.6 to form A mixed solution; weigh 0.1995g cadmium acetate dihydrate and 0.1838g Dissolve manganese acetate dihydrate in 25mL deionized water to form a mixed solution of B; weigh 0.0023gMoO obtained in step (1) 2 Disperse the powder in 10mL of ...

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Abstract

The invention discloses a supported photocatalyst containing Mn0.5Cd0.5S and Cu2O and a preparation method of the supported photocatalyst, and belongs to the field of inorganic functional materials. MoO2 and Cu2O are loaded on Mn0.5Cd0.5S to prepare the supported Mn0.5Cd0.5S photocatalyst, wherein the mass ratio of Mn0.5Cd0.5S to MoO2 to Cu2O is 1:(0.005-0.03):(0.005-0.03). In the present invention, Cu2O and Mn0.5Cd0.5S form a p-n heterojunction; and MoO2 is added into the composite photocatalyst as a cocatalyst, so that the electron-hole composite efficiency is reduced, migration of Mn0.5Cd0.5S conduction band electrons is facilitated, the photocatalytic activity of the supported catalyst is greatly improved, and the hydrogen production rate is as high as 170.366 [mu]mol*h<-1>.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials, and relates to 0.5 Cd 0.5 S and Cu 2 O-loaded photocatalysts, specifically involving a Mn 0.5 Cd 0.5 S / MoO 2 / Cu 2 O-loaded photocatalyst and preparation method thereof. Background technique [0002] With the continuous development of society, the energy crisis is becoming more and more serious. Due to the continuous exploitation and consumption of fossil fuels, the ensuing environmental pollution is increasing. Therefore, it is urgent to develop a new type of reliable and environmentally friendly energy to solve the current problems. Hydrogen is the most abundant element in nature and the most abundant substance in the universe, accounting for about 75%. Hydrogen energy is an efficient, clean and sustainable "carbon-free" energy. The generation of photocatalytic technology can use solar energy to decompose water to produce hydrogen, which not only solves the energy crisis but ...

Claims

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Application Information

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IPC IPC(8): B01J27/04C01B3/04
CPCB01J27/04B01J23/002C01B3/042B01J35/39Y02E60/36
Inventor 吕华武新新刘玉民
Owner HENAN NORMAL UNIV
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