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Cu2O@Cu/AgBr composite light catalyst and preparation method thereof

A technology of catalyst and compound light, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, chemical instrument and method, etc. It can solve the problems affecting application and poor catalyst stability, etc.

Active Publication Date: 2016-08-24
NANKAI UNIV
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Problems solved by technology

However, since AgBr itself is not stable under light conditions, the stability of the catalyst itself is poor when used for photocatalysis, which affects the application of AgBr / Ag photocatalysts. A photocatalyst with high catalytic efficiency and high catalyst stability has become a problem to be solved urgently in the prior art

Method used

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  • Cu2O@Cu/AgBr composite light catalyst and preparation method thereof
  • Cu2O@Cu/AgBr composite light catalyst and preparation method thereof
  • Cu2O@Cu/AgBr composite light catalyst and preparation method thereof

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Embodiment Construction

[0033] The present invention will be further described by specific examples below.

[0034] In the specific embodiment of the present invention

[0035] 1) Firstly, the method of liquid phase reduction is used to prepare Cu 2 O@Cu core-shell nanoparticles

[0036] 1.1) CuSO as a soluble copper(II) salt 4 ·5H 2 O (0.02mol) was dissolved in a water-alcohol mixed solution obtained by mixing ethylene glycol (20mL) and deionized water (10mL), and stirred evenly in a water bath at 60°C for 10 minutes to obtain a mixed solution 1.1;

[0037] 1.2) Add NaOH solution (5 mol / L, 10 mL) as a strong base solution dropwise to the mixed solution 1.1, and continue stirring for 5 minutes until the soluble copper (II) salt and the strong base react completely to obtain a reaction solution 1.2;

[0038] 1.3) Glucose solution (1.1mol / L, 10mL) as a reducing agent was added to the reaction solution 1.2, continuously stirred for Amin, and the Cu(II) in the reaction solution 1.2 was reduced to obt...

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Abstract

The invention discloses a Cu2O@Cu / AgBr composite light catalyst and a preparation method thereof. The preparation method of the Cu2O@Cu / AgBr composite light catalyst is characterized by comprising the following steps that 1, firstly, a liquid phase reduction method is adopted for preparing Cu2O@Cu core-shell structure nanoparticles, wherein the mass percentage of Cu in the Cu2O@Cu core-shell structure nanoparticles is 0.5-5%; 2, a liquid-phase precipitation method is adopted for precipitating AgBr on the surfaces of the Cu2O@Cu core-shell structure nanoparticles obtained in the step 1, and the Cu2O@Cu / AgBr composite light catalyst is obtained, wherein the molar ratio of an element Ag to an element Cu is 1: (0.1-20).

Description

technical field [0001] The invention relates to a composite photocatalyst and a preparation method thereof. Background technique [0002] The environment is a necessary condition for human beings to survive. With the development of society, people pay more and more attention to the environment. Since the beginning of the new century, environmental problems such as air pollution, greenhouse effect, energy shortage, and water shortage have seriously threatened the survival and sustainable development of human beings. Semiconductor photocatalysis technology has received extensive attention in the past three decades. In 1972, Japanese scientists Fujishima and Honda discovered that semiconductor TiO 2 Capable of decomposing water into H through photocatalysis 2 (Nature, 1972, 37:238~245), since then semiconductor photocatalytic technology has been extensively studied. Semiconductor photocatalysts are usually prepared by various physical or chemical methods. Its advantage is t...

Claims

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Application Information

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IPC IPC(8): B01J27/10B01J37/03B01J37/16
CPCB01J27/10B01J37/031B01J37/16B01J35/396B01J35/39
Inventor 程雅慧贺婕刘晖
Owner NANKAI UNIV
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