C/Bi/Bi2MoO6 polarization material, preparation method thereof and application of material in photocatalytic degradation of dyes

A photocatalytic and dye technology, applied in the field of photocatalytic materials, can solve the problems of high cost and difficult recycling of materials, and achieve the effects of low cost, good photocatalytic degradation performance, and uniform microscopic morphology.

Active Publication Date: 2020-04-17
HUBEI NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a C/Bi/Bi for the current use of semiconductor materials based on precious metals to deal with environmental pollution will lead to high costs, and the materials are not easy to recycle and use. 2 MoO 6 Polarized material and preparation met

Method used

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  • C/Bi/Bi2MoO6 polarization material, preparation method thereof and application of material in photocatalytic degradation of dyes
  • C/Bi/Bi2MoO6 polarization material, preparation method thereof and application of material in photocatalytic degradation of dyes
  • C/Bi/Bi2MoO6 polarization material, preparation method thereof and application of material in photocatalytic degradation of dyes

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Effect test

Embodiment 1

[0053] C / Bi / Bi of this embodiment 2 MoO 6 The preparation method of polarized material comprises the following steps:

[0054] (1) Preparation of EDTA-Bi precursor

[0055] Take 1.0mL concentrated nitric acid and dissolve it in 29.0mL water, then add 4.8500g Bi(NO 3 ) 3 ·5H 2 O and 2.92g EDTA, ultrasonically dissolved for 20min, and then use 14% NH 3 ·H 2 O adjusted the pH of the solution to 6.5, stirred for 2 h, collected the solid sediment after centrifugation and dried at 100 °C for 20 h to obtain the EDTA-Bi precursor.

[0056] (2) C / Bi / Bi 2 MoO 6 Preparation of composite materials

[0057] Weigh 1.6866g Bi(NO 3 ) 3 ·5H 2 O was dissolved in 5.0mL ethylene glycol to obtain liquid A; then weighed 0.4210gNa 2 MoO 4 2H 2 O was dissolved in 5.0mL ethylene glycol to obtain liquid B;

[0058]Add 0.0530g of the EDTA-Bi precursor prepared in step (1) to liquid A, and after stirring thoroughly, drop liquid B into liquid A, stir to make it fully react, and obtain liqu...

Embodiment 2

[0063] For verifying the C / Bi / Bi of embodiment 1 of the present invention 2 MoO 6 Whether the preparation of the polarized material is successful, the applicants respectively compare Bi 2 MoO 6 、C / Bi / Bi 2 MoO 6 Composites and C / Bi / Bi 2 MoO 6 The polarized material was analyzed by XRD, SEM, FT-IR and XPS. The specific experimental results are as follows.

[0064] Bi used in this example 2 MoO 6 The preparation method comprises the following steps: weighing 1.6866g Bi(NO 3 ) 3 ·5H 2 O was dissolved in 5.0 mL of ethylene glycol to give Bi(NO 3 ) 3 solution; then weigh 0.4210g Na 2 MoO 4 2H 2 O was dissolved in 5.0 mL of ethylene glycol to give Na 2 MoO 4 solution; while stirring, Na 2 MoO 4 The solution was dropped into Bi(NO 3 ) 3 solution, then add 20.0 g of ethanol to the solution, stir well, transfer the obtained suspension to a 45.0 mL stainless steel autoclave, react at 160°C for 10 h, cool naturally to room temperature, and use the obtained solid Alte...

Embodiment 3

[0087] C / Bi / Bi of this embodiment 2 MoO 6 The application of polarized materials in the catalytic degradation of colored dye malachite green, take three 50mL malachite green solutions with a concentration of 10mg / L, and number them #1, #2 and #3 respectively, and send them to #1 and #2 respectively and #3 solution was added with 0.02g Bi 2 MoO 6 , 0.02g C / Bi / Bi 2 MoO 6 Composite material and 0.02g C / Bi / Bi 2 MoO 6 The polarized materials act as catalysts respectively, and the solution maintains the original pH. First, 30 minutes of dark light treatment was performed to achieve adsorption-desorption equilibrium, and then light was applied for 60 minutes, and the test was performed every 10 minutes. Figure 18 is the graph of photocatalytic degradation of malachite green for three different catalysts. It can be seen from the figure that pure Bi 2 MoO 6 The degradation rate was only 53.1% within 60 minutes, and the C / Bi / Bi after introducing C and Bi 2 MoO 6 The degradat...

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Abstract

The invention discloses a C/Bi/Bi2MoO6 polarization material, a preparation method thereof and an application of the material in photocatalytic degradation of dyes. The C/Bi/Bi2MoO6 polarization material is prepared by the following steps: firstly preparing an EDTA-Bi precursor, then preparing a C/Bi/Bi2MoO6 composite material from the EDTA-Bi precursor, and finally preparing the C/Bi/Bi2MoO6 polarization material. The C/Bi/Bi2MoO6 polarization material has the advantages of low price, simple preparation method, good stability and the like, has a good effect in photocatalytic degradation of acolored dye malachite green and a colorless dye bisphenol A, is suitable for removal of organic pollutants and purification of water, and is also suitable for industrial cyclic utilization.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, specifically C / Bi / Bi 2 MoO 6 Polarized material, its preparation method and its application in photocatalytic degradation of dyes. Background technique [0002] With the rapid development of industry, the problem of environmental pollution has become more and more serious. Therefore, environmental protection has become one of the most important tasks in future development. Since Honda and Fujishima proved TiO in the 1970s 2 Since it can be applied to photocatalysis under ultraviolet light, the application of photocatalysis composed of semiconductor materials is considered as one of the reliable solutions to solve environmental problems. Photocatalysts readily absorb artificial light or natural solar energy, which spreads all over the world. Nowadays, semiconductor-based photocatalysis technology has attracted much attention due to its great potential in environmental protect...

Claims

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Application Information

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IPC IPC(8): B01J23/31C02F1/72C02F1/30C02F101/34C02F101/38C02F101/36
CPCB01J23/31B01J35/004C02F1/725C02F1/30C02F2305/10C02F2101/308C02F2101/38C02F2101/345C02F2101/36Y02W10/37
Inventor 杨水金张志邹晨涛
Owner HUBEI NORMAL UNIV
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