Iron porphyrin-flaky bismuth tungstate two-dimensional composite material and preparation method thereof

A composite material, iron porphyrin technology, applied in chemical instruments and methods, special compound water treatment, organic compound/hydride/coordination complex catalyst, etc. The effect of shifting, enhancing availability

Active Publication Date: 2019-02-01
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these efficient catalytic processes still require the addition of H 2 o 2 , will increase a lot of cost in practical application

Method used

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  • Iron porphyrin-flaky bismuth tungstate two-dimensional composite material and preparation method thereof
  • Iron porphyrin-flaky bismuth tungstate two-dimensional composite material and preparation method thereof
  • Iron porphyrin-flaky bismuth tungstate two-dimensional composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] An iron porphyrin-sheet-shaped bismuth tungstate two-dimensional composite material includes iron porphyrin and sheet-shaped bismuth tungstate, wherein the iron porphyrin is fixed on the surface of the sheet-shaped bismuth tungstate.

[0032] In this embodiment, the mass ratio of the iron porphyrin-flaky bismuth tungstate two-dimensional composite material is 0.5%.

[0033] In this embodiment, the size (length×width) of the iron porphyrin-flaky bismuth tungstate two-dimensional composite material is 150 nm×250 nm, and the thickness is 5.9 nm.

[0034] A method for preparing the iron porphyrin-flaky bismuth tungstate two-dimensional composite material of the above embodiment includes the following steps:

[0035] (1) Add iron porphyrin to methanol so that the concentration of the iron porphyrin dispersion solution is 1 mg / mL, stir at 800 r / min for 10 minutes, ultrasonicate for 15 minutes, and mix uniformly to obtain the iron porphyrin dispersion solution.

[0036] Weigh Bi(NO 3 ) ...

Embodiment 2

[0042] An iron porphyrin-sheet-shaped bismuth tungstate two-dimensional composite material includes iron porphyrin and sheet-shaped bismuth tungstate, wherein the iron porphyrin is fixed on the surface of the sheet-shaped bismuth tungstate.

[0043] In this embodiment, the mass ratio of iron porphyrin to flaky bismuth tungstate in the iron porphyrin-flaky bismuth tungstate two-dimensional composite material is 1.0%.

[0044] In this embodiment, the size (length×width) of the iron porphyrin-flaky bismuth tungstate two-dimensional composite material is 150 nm×250 nm, and the thickness is 5.9 nm.

[0045] A method for preparing the iron porphyrin-flaky bismuth tungstate two-dimensional composite material of the above embodiment includes the following steps:

[0046] (1) Add iron porphyrin to methanol so that the concentration of the iron porphyrin dispersion solution is 1 mg / mL, stir at 800 r / min for 10 minutes, ultrasonicate for 15 minutes, and mix uniformly to obtain the iron porphyrin ...

Embodiment 3

[0057] An iron porphyrin-sheet-shaped bismuth tungstate two-dimensional composite material includes iron porphyrin and sheet-shaped bismuth tungstate, wherein the iron porphyrin is fixed on the surface of the sheet-shaped bismuth tungstate.

[0058] In this embodiment, the mass ratio of iron porphyrin to flaky bismuth tungstate in the iron porphyrin-flaky bismuth tungstate two-dimensional composite material is 3.0%.

[0059] In this embodiment, the size (length×width) of the iron porphyrin-flaky bismuth tungstate two-dimensional composite material is 150 nm×250 nm, and the thickness is 5.9 nm.

[0060] A method for preparing the iron porphyrin-flaky bismuth tungstate two-dimensional composite material of the above embodiment includes the following steps:

[0061] (1) Add iron porphyrin to methanol so that the concentration of the iron porphyrin dispersion solution is 1 mg / mL, stir at 800 r / min for 10 minutes, ultrasonicate for 15 minutes, and mix uniformly to obtain the iron porphyrin ...

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Abstract

The invention discloses an iron porphyrin-flaky bismuth tungstate two-dimensional composite material and a preparation method thereof, wherein the iron porphyrin-flaky bismuth tungstate two-dimensional composite material comprises iron porphyrin and flaky bismuth tungstate, and the iron porphyrin is immobilized on the surface of the flaky bismuth tungstate. The preparation method comprises: preparing a mixed solution of bismuth nitrate and sodium tungstate; preparing a precursor mixed solution; and carrying out a hydrothermal reaction on the precursor mixed solution. According to the present invention, the iron porphyrin-flaky bismuth tungstate two-dimensional composite material has advantages of good dispersibility, strong stability, easy recovery and reuse, excellent photocatalytic performance, environmental friendliness and the like, can efficiently degrade pollutants (such as antibiotics) in environment without the adding of H2O2, has good photocatalytic degradation effect, can significantly reduce the treatment cost, and has good application prospects and application range in the field of photocatalysis; and the preparation method has advantages of mild reaction conditions, simple process flow and environmental protection.

Description

Technical field [0001] The invention belongs to the field of functional materials, and relates to a biomass / semiconductor composite photocatalytic material and a preparation method thereof, in particular to an iron porphyrin-sheet-shaped bismuth tungstate two-dimensional composite material and a preparation method thereof. Background technique [0002] As we all know, enzymes have high catalytic activity and have been used in the environmental field for decades. However, the practical application of enzymes is limited by low operational stability, harsh environmental conditions and expensive preparation processes. In order to meet the needs of scientific development, the design and promotion of artificial enzymes have been developed rapidly. Iron porphyrin (Hemin) is a popular biomimetic material with good application prospects in the preparation of artificial enzymes, such as graphite-Hemin composite materials. At present, due to its unique photochemical behavior, especially h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26C02F1/30C02F1/72C02F101/30
CPCB01J31/26B01J35/004C02F1/30C02F1/722C02F1/725C02F2101/30C02F2305/026C02F2305/10
Inventor 曾光明易欢赖萃黄丹莲李敏芳霍秀琴李必胜王晗申茂才文晓凤胡凯郭雪莹
Owner HUNAN UNIV
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