Bismuth tungstate-MIL-53 (Al) composite material and preparation method and application thereof

A MIL-53 and composite material technology, applied in chemical instruments and methods, catalyst activation/preparation, water treatment of special compounds, etc., to achieve significant industrial application value, expand the absorption range, and change the effect of microstructure

Active Publication Date: 2018-06-08
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, through literature search and investigation, no bismuth nitrate, sodium tungstate and MIL-53(Al) were found to be used as raw materials to prepare Bi 2 WO 6 / Patent application and literature reports on the method of MIL-53(Al) visible light photocatalytic material

Method used

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  • Bismuth tungstate-MIL-53 (Al) composite material and preparation method and application thereof
  • Bismuth tungstate-MIL-53 (Al) composite material and preparation method and application thereof
  • Bismuth tungstate-MIL-53 (Al) composite material and preparation method and application thereof

Examples

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Embodiment 1

[0030] In this example,

[0031] A preparation method of bismuth tungstate-MIL-53 (Al) composite material, comprising the steps of:

[0032] (1) Weigh 0.07mol of Al(NO 3 ) 3 9H 2 O, 0.035mol of terephthalic acid (H 2 BDC), Al(NO 3 ) 3 9H 2 O and H 2 BDC was dissolved in 100mL of distilled water, treated by ultrasonic dispersion for 30min, mixed uniformly and fully dissolved to obtain mixed solution A, and then the mixed solution A was transferred to an autoclave by solvothermal method, and then the autoclave was placed in a temperature of 220 In an oven at ℃, the reaction was carried out for 72 hours. After the reaction product was cooled to room temperature, it was centrifuged, washed twice with twice distilled water and washed once with absolute ethanol to obtain a pure reaction product, and then placed in an oven at a temperature of 80℃ , the reaction product was vacuum-dried for 10 hours to obtain the product MIL-53(Al), which was used as a carrier material for sub...

Embodiment 2

[0039] This embodiment is basically the same as Embodiment 1, especially in that:

[0040] In the present embodiment, a kind of preparation method of bismuth tungstate-MIL-53 (Al) composite material, comprises the steps:

[0041] (1) This step is identical with embodiment one;

[0042] (2) This step is identical with embodiment one;

[0043] (3) Weigh 1mmol of Na respectively 2 WO 4 2H 2Cetyltrimethylammonium bromide (CTAB) of O, 0.2g and the MIL-53 (Al) that 0.5mmol makes in above-mentioned step (1), Na 2 WO 4 2H 2 Dissolve O and cetyltrimethylammonium bromide together in 20mL ethylene glycol solution to obtain sodium tungstate solution, then mix MIL-53(Al) and sodium tungstate solution evenly, and use ultrasonic dispersion treatment 30min, and under agitation, the above-mentioned mixed solution was added dropwise to the Bi(NO 3 ) 3 solution, and NaOH solution was added to the mixed solution to adjust the pH of the mixed solution to 4, and then the mixed solution was...

Embodiment 3

[0047] This embodiment is basically the same as the previous embodiment, and the special features are:

[0048] In the present embodiment, a kind of preparation method of bismuth tungstate-MIL-53 (Al) composite material, comprises the steps:

[0049] (1) This step is identical with embodiment one;

[0050] (2) This step is identical with embodiment one;

[0051] (3) Weigh 1mmol of Na respectively 2 WO 4 2H 2 Cetyltrimethylammonium bromide (CTAB) of O, 0.2g and the MIL-53 (Al) that 2mmol makes in above-mentioned step (1), Na 2 WO 4 2H 2 Dissolve O and cetyltrimethylammonium bromide together in 20mL ethylene glycol solution to obtain sodium tungstate solution, then mix MIL-53(Al) and sodium tungstate solution evenly, and use ultrasonic dispersion treatment 30min, and under agitation, the above-mentioned mixed solution was added dropwise to the Bi(NO 3 ) 3 solution, and NaOH solution was added to the mixed solution to adjust the pH of the mixed solution to 4, and then th...

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Abstract

The invention discloses a bismuth tungstate-MIL-53 (Al) composite material and a preparation method and application thereof. The preparation method comprises adding a metal-organic framework materialMIL-53 (Al) into a metal salt solution for Bi2WO6 synthesis, carrying out full stirring, adjusting pH through a NaOH solution and preparing a loaded visible photocatalyst Bi2WO6 / MIL-53(Al) composite material through a solvothermal method. Through control of reaction conditions of the solvothermal method, the microstructure and morphology of the composite material are adjusted. The loaded Bi2WO6 / MIL-53(Al) composite material has bulk morphology. Bi2WO6 is uniformly distributed on the carrier MIL-53(Al). The loaded composite material photocatalyst has high catalytic activity, has a rhodamine B degradation rate of 97% and has a certain stability and reusability. The preparation method has simple processes and low energy consumption and is easy to industrialize.

Description

technical field [0001] The present invention relates to a kind of photocatalyst, its preparation method and application, particularly relate to a kind of loaded visible light photocatalyst Bi 2 WO 6 Composite material, its preparation method and application, and in particular to a metal organic framework material MIL-53 (Al) loaded photocatalyst composite material, its preparation method and application, and also relates to a kind of degradation of refractory organic pollutants in water The rhodamine B method is applied to the technical field of photocatalytic materials. Background technique [0002] In the face of severe environmental pollution and energy crisis, photocatalytic reaction technology has attracted great attention of researchers because it can provide an effective solution. Compared with the ultraviolet light photocatalytic reaction technology which accounts for only 4% of sunlight, the visible light photocatalytic reaction technology has great advantages. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/34B01J35/02B01J37/10C02F1/30C02F101/34C02F101/36C02F101/38
CPCB01J23/002B01J31/34B01J35/004B01J35/0093B01J35/023B01J37/10B01J2531/0241B01J2531/31C02F1/30C02F2101/308C02F2101/34C02F2101/36C02F2101/38C02F2305/10
Inventor 胡龙兴张雨瑶陆文聪胡海明陆永生
Owner SHANGHAI UNIV
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