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Preparation method for MoS2-BiPO4 composite photocatalyst

A technology of mos2-bipo4 and composite light, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., to achieve high photocatalytic activity, simple process, and mild reaction conditions

Inactive Publication Date: 2014-11-19
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far nothing about MoS 2 -BiPO 4 Related reports on composite photocatalysts

Method used

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  • Preparation method for MoS2-BiPO4 composite photocatalyst

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Embodiment 1

[0010] (1) Add 1mmol MoO 3 Add 2.5mmol KSCN and 2.5mmol KSCN to 10ml deionized water, stir and mix evenly, transfer the raw materials to a 23ml reactor and react at 160°C for 32h, cool to room temperature, wash repeatedly with deionized water, and vacuum dry at 60°C for 12h;

[0011] (2) Take 3mg of graphene-like MoS prepared in step (1) 2 Dissolve in 20ml ethylene glycol solution and ultrasonically disperse for 40min, ultrasonic power 90W, to obtain uniform MoS 2 Dispersions;

[0012] (3) Take 1mmol Bi(NO 3 ) 3 Join the MoS 2 Magnetically stir the dispersion until it is completely dissolved, then add 1mmol NaH 2 PO 4 , mixed evenly, transferred to a hydrothermal kettle and heated in a microwave at 180°C for 60 minutes. After the reaction was completed, MoS was obtained by cooling, washing and drying. 2 -BiPO 4 composite photocatalyst.

Embodiment 2

[0014] (1) Add 1mmol MoO 3 Add 2.5mmol KSCN and 2.5mmol KSCN to 10ml deionized water successively with magnetic stirring, mix evenly, transfer the raw materials to a 23ml reaction kettle, react at 200°C for 12h, after cooling to room temperature, wash repeatedly with deionized water, and vacuum dry at 60°C for 12h;

[0015] (2) Take 6mg of graphene-like MoS prepared in step (1) 2 Dissolve in 40ml ethylene glycol solution and ultrasonically disperse for 20min with ultrasonic power of 90W to obtain uniform MoS 2 Dispersions;

[0016] (3) Take 1mmol Bi(NO 3 ) 3 Join the MoS 2 Magnetically stir the dispersion until it is completely dissolved, then add 1mmol NaH 2 PO 4 , mixed evenly, transferred to a hydrothermal kettle and heated in a microwave at 160°C for 120min. After the reaction was completed, MoS was obtained by cooling, washing and drying. 2 -BiPO 4 composite photocatalyst.

[0017] figure 1 Under the irradiation of a 125W high-pressure mercury lamp, the MoS prep...

Embodiment 3

[0019] (1) Add 1mmol MoO 3 Add 2.5mmol KSCN and 2.5mmol KSCN to 10ml deionized water, stir magnetically, mix evenly, transfer the raw materials to a 23ml reactor and react at 180°C for 24h, cool to room temperature, wash repeatedly with deionized water, and vacuum dry at 60°C for 12h;

[0020] (2) Take 9mg of graphene-like MoS prepared in step (1) 2 Dissolve in 10ml ethylene glycol solution and ultrasonically disperse for 60min, ultrasonic power 90W, to obtain uniform MoS 2 Dispersions;

[0021] (3) Take 1mmol Bi(NO 3 ) 3 Join the MoS 2 Magnetically stir the dispersion until it is completely dissolved, then add 1mmol NaH 2 PO 4 , mixed evenly, transferred to a hydrothermal kettle and heated in a microwave at 200°C for 30 minutes. After the reaction was completed, MoS was obtained by cooling, washing and drying. 2 -BiPO 4 composite photocatalyst.

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Abstract

The invention discloses a preparation method for a MoS2-BiPO4 composite photocatalyst. The preparation method comprises the following steps: (1) dissolving 1mmol of molybdenum trioxide and 2.5mmol of potassium thiocyanate in deionized water to form a mixed solution A, transferring the mixed solution A into a hydrothermal reaction kettle for reacting for 12 to 32 hours at 160 to 200 DEG C, cooling to room temperature, washing, and drying to obtain graphene-like MoS2; (2) ultrasonically dispersing 3 to 9mg of the prepared graphene-like MoS2 into ethylene glycol to obtain a MoS2 dispersion liquid; and (3) adding 1mmol of bismuth nitrate into prepared MoS2 dispersion liquid, magnetically stirring until the bismuth nitrate is completely dissolved, adding 1mmol of sodium dihydrogen phosphate, mixing uniformly to obtain a mixed solution II, then transferring the solution II into the hydrothermal reaction kettle for performing microwave hydrothermal treatment for 30 to 120 minutes at 160 to 200 DEG C, cooling, washing and drying to obtain the MoS2-BiPO4 composite photocatalyst. According to the preparation method, the reaction time is short, the heating rate is high, reaction conditions are mild, a process is simple, the controllability is high, and the large-scale production is easy to realize.

Description

technical field [0001] The invention belongs to the technical field of inorganic environment-friendly photocatalytic materials, and specifically relates to a kind of MoS 2 -BiPO 4 Preparation method of composite photocatalyst. Background technique [0002] With the continuous development of industry and the increasingly serious environmental pollution, the physical and chemical methods in the traditional water treatment process can no longer meet the needs of water treatment. Photocatalytic degradation of pollutants is an energy-saving and efficient green technology developed in recent years. It has the advantages of low energy consumption, mild reaction conditions and less secondary pollution, so it has attracted widespread attention. In recent years, BiPO 4 The potential of photocatalytic degradation of organic pollutants has gradually attracted people's attention. This bismuth-based photocatalyst has a wide absorption band gap due to its unique crystal structure and el...

Claims

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Application Information

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IPC IPC(8): B01J27/186
Inventor 刘玉民吕华汤海波张鹏李爽丁志伟
Owner HENAN NORMAL UNIV
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