Bi-MOF-M/Bi2MoO6 visible-light-driven photocatalyst capable of efficiently degrading organic wastewater and preparation method of Bi-MOF-M/Bi2MoO6 visible-light-driven photocatalyst

A technology of organic wastewater and catalysts, which is applied in the field of environment and energy, can solve the problems that nano photocatalysts are difficult to recycle and reuse, photogenerated carriers are easy to recombine, and are not easy to recycle, so as to achieve good industrial application prospects, improve visible light catalytic performance, and improve The effect of absorption strength

Active Publication Date: 2021-10-26
JIANGNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the two major technical problems that the photogenerated carriers of the existing photocatalysts are easy to recombine and the nanophotocatalysts are difficult to recycle and use, the present invention prepares a micro-nano hierarchical structure Bi- MOF microspheres (Bi-MOF-M), and then grow a layer of petal-like Bi on the surface of Bi-MOF-M by homologous growth method 2 MoO 6 , to prepare chemically bonded heterojunction composite photocatalyst Bi-MOF-M/Bi 2 MoO 6 , the prepared Bi-MOF-M/Bi 2 MoO 6 The composite photocatalyst has a micro-nano hierarchical flower spherical structure,

Method used

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  • Bi-MOF-M/Bi2MoO6 visible-light-driven photocatalyst capable of efficiently degrading organic wastewater and preparation method of Bi-MOF-M/Bi2MoO6 visible-light-driven photocatalyst
  • Bi-MOF-M/Bi2MoO6 visible-light-driven photocatalyst capable of efficiently degrading organic wastewater and preparation method of Bi-MOF-M/Bi2MoO6 visible-light-driven photocatalyst
  • Bi-MOF-M/Bi2MoO6 visible-light-driven photocatalyst capable of efficiently degrading organic wastewater and preparation method of Bi-MOF-M/Bi2MoO6 visible-light-driven photocatalyst

Examples

Experimental program
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Example Embodiment

[0038] Example 1

[0039] This example is BI-MOF-M / BI 2 MOO 6 Preparation and application of visible photocatalysts. The specific process is:

[0040] Preparation of BI-MOF micron balls (Bi-Mof-M): 1 mmol of Bi (NO 3 ) 3 · 5h 2 O Soluble in 40 ml of ethylene glycol, 1 mmol of terephthalic acid was dissolved in 30 mln, N-dimethylformamide, and B, adding the resulting B to A, stirring at room temperature for 1 h, It was then transferred to a hydrothermal reaction kettle, at 120 ° C, reactive 12h, after the reaction, naturally cooled to room temperature, filtered, deionized water was washed once, ethanol was washed once, 50 ° C is vacuum dried, to obtain Bi-Mof Micron (Bi-Mof-M);

[0041] BI-MOF-M / BI 2 MOO 6 Preparation of a visible photocatalyst: 0.1 g of Bi-Mof-m ultrasound is dispersed in 40 mL of ethanol, and a 0.1 mmol of NA is obtained. 2 MOO 4 · 2h 2 O was dissolved in 20 ml of ethylene glycol, and B, the resulting B was added dropwise to A, stirred at room temperature for...

Example Embodiment

[0044] Example 2

[0045] This example is BI-MOF-M / BI 2 MOO 6 Preparation and application of visible photocatalysts. The specific process is:

[0046] Preparation of BI-MOF micron balls (Bi-Mof-M): 5 mmol of BI (NO 3 ) 3 · 5h 2 O Soluble in 40 ml of ethylene glycol, resulting in 5 mmol of terephthalic acid in 30 mlN, N-dimethylformamide, got b, adding the resulting B to A, stirring at room temperature for 3 h, It was then transferred to the hydrothermal reaction kettle, at 160 ° C, reaction for 18 h, after the end, naturally cooled to room temperature, filtered, deionized water washed twice, ethanol was washed twice, 80 ° C, vacuum dried, obtained Bi-Mof Micron (Bi-Mof-M);

[0047] BI-MOF-M / BI 2 MOO 6 Preparation of a visible photocatalyst: 0.3 g of Bi-MOF-M ultrasonic dispersion was dispersed in 40 ml of ethanol, and a 0.5 mmol of NA 2 MOO 4 · 2h 2 O was dissolved in 20 ml of ethylene glycol, and the obtained B was added dropwise to A, stirred at room temperature for 3 h, the...

Example Embodiment

[0050] Example 3

[0051] This example is BI-MOF-M / BI 2 MOO 6 Preparation and application of visible photocatalysts. The specific process is:

[0052] Preparation of Bi-Mof Mini (Bi-Mof-M): 2 mmol of Bi (NO 3 ) 3 · 5h 2 O Soluble in 40 ml of ethylene glycol, resulting in 3 mmol of terephthalic acid in 30 mln, N-dimethylformamide, got b, adding the resulting B to A, stirring at room temperature for 2 h, It was then transferred to a hydrothermal reaction kettle, at 150 ° C, after 16h, the reaction was completed, naturally cooled to room temperature, filtered, deionized water washed twice, ethanol was washed twice, 60 ° C, vacuum, to obtain the Bi-Mof Micron (Bi-Mof-M);

[0053] BI-MOF-M / BI 2 MOO 6 Preparation of visible photocatalysts: 0.2 g of Bi-MOF-M ultrasound is dispersed in 40 mL of ethanol, and a 0.3 mmol of NA 2 MOO 4 · 2h 2 O was dissolved in 20 ml of ethylene glycol, and then b was added dropwise to A, stirred at room temperature for 2 h, then transferred to a hydrothe...

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Abstract

The invention discloses a Bi-MOF-M/Bi2MoO6 visible-light-driven photocatalyst capable of efficiently degrading organic wastewater and a preparation method of the Bi-MOF-M/Bi2MoO6 visible-light-driven photocatalyst, and belongs to the technical field of environment and energy. According to the preparation method, Bi-MOF-M microspheres are prepared through self-assembly, a layer of petal-shaped Bi2MoO6 is grown on the surface layers of the Bi-MOF-M microspheres through interface in-situ growth, chemical bonding type heterojunctions are formed, and the micro-nano graded flower-ball-shaped Bi-MOF-M/Bi2MoO6 visible-light-driven photocatalyst is prepared. The obtained composite visible-light-driven photocatalyst is easy and convenient to prepare, environmentally friendly, high in stability, free of residues in waste water, high in visible-light catalytic activity, capable of efficiently degrading various organic dye waste water and high-concentration antibiotic waste water under irradiation of visible light, simple in waste water treatment process, capable of being recycled and reused, capable of greatly reducing cost and suitable for industrial production, and has good industrial application prospects.

Description

technical field [0001] The invention relates to a Bi-MOF-M / Bi that efficiently degrades organic wastewater 2 MoO 6 A visible light catalyst and a preparation method thereof belong to the technical field of environment and energy. Background technique [0002] With the rapid development of modern industry, the number and types of organic pollutants that are difficult to biodegrade are increasing, which has a great impact on the natural ecological environment, people's life and health, especially the chemical, printing and dyeing and pharmaceutical industries. Pollutants have gradually increased with the development of society. Affected by technical and economic factors, the current wastewater treatment still mainly adopts chemical and physical methods, but this can no longer meet the current high efficiency and high requirements for pollutant treatment. The organic and difficult-to-treat wastewater produced in chemical, printing and dyeing, and pharmaceutical industries ur...

Claims

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Application Information

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IPC IPC(8): B01J31/34B01J31/22C02F3/30C02F101/30
CPCB01J31/34B01J31/1691B01J31/223B01J35/004C02F3/30B01J2531/54C02F2305/10C02F2101/308C02F2101/30Y02W10/37
Inventor 顾文秀李倩李海新宋启军赵媛王婵
Owner JIANGNAN UNIV
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