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

A photocatalyst and load-type technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of limited photocatalytic activity and low quantum efficiency, and achieve improved photocatalytic activity and enhanced Effects of light absorption, enhanced quantum efficiency, and hydrogen production efficiency by photo-splitting water

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

AI Technical Summary

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

Examples

Experimental program
Comparison scheme
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; weigh 0.266g cadmium acetate dihydrate and 0.245g Manganese acetate dihydrate was dissolved in 25mL deionized water to form a mixed solution of B; 0.0011gMoO obtained in step (1) was weighed 2 Disperse the powder in 10...

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 Cd 0.5 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 1...

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 Au and a preparation method of the supported photocatalyst, and belongs to the field of inorganic functional materials. MoO2 and Au are supported on the Mn0.5Cd0.5S to prepare a supported photocatalyst Mn0.5Cd0.5S/MoO2/Au, wherein the mass ratio of the Mn0.5Cd0.5S to the MoO2 to Au is 1:(0.005-0.03):(0.01-0.04). Accordingto the preparation method, the MoO2 is added into the Mn0.5Cd0.5S as a cocatalyst, so that the electron-hole recombination efficiency is reduced; due to the introduction of the nano Au particles, thenano Au particles and a Mn0.5Cd0.5S/MoO2 system can form surface plasma resonance to enhance light absorption, 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 108.154 [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 Au supported photocatalysts, specifically involving a Mn 0.5 Cd 0.5 S / MoO 2 / Au 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 also pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J37/10B01J37/34C01B3/04
CPCB01J27/051B01J35/004B01J37/10B01J37/343C01B3/042C01B2203/1094C01B2203/1041C01B2203/0277Y02E60/36
Inventor 刘玉民王兰兰吕华武新新
Owner HENAN NORMAL UNIV
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