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Hybrid material graphene/C3N4 for photocatalytically degrading fungaltoxin and preparation method and application thereof

A technology of mycotoxins and hybrid materials, applied in the field of analytical chemistry, can solve the problems of low utilization rate of visible light and low quantum efficiency, and achieve the effect of high application prospect, practical value and simple process.

Active Publication Date: 2017-01-11
ACAD OF NAT FOOD & STRATEGIC RESERVES ADMINISTRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Graphite-like carbon nitride (g-C 3 N 4 ) as a high-efficiency, low-cost, non-toxic visible light semiconductor photocatalyst has been widely used in the research of photocatalytic degradation of organic pollutants, but there are problems such as low utilization rate of visible light and low quantum efficiency.

Method used

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  • Hybrid material graphene/C3N4 for photocatalytically degrading fungaltoxin and preparation method and application thereof
  • Hybrid material graphene/C3N4 for photocatalytically degrading fungaltoxin and preparation method and application thereof
  • Hybrid material graphene/C3N4 for photocatalytically degrading fungaltoxin and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0047] 1) Nano photocatalyst g-C 3 N 4 preparation of

[0048] The dicyandiamide solid powder of 2g is ground into uniform fine powder, then puts into the crucible of 50mL; The crucible is placed in the muffle furnace, and then the muffle furnace is heated up to 2.3 ℃ / min speed. 550°C; the muffle furnace equipped with a crucible was calcined at 550°C for 4 hours, and the temperature was naturally lowered after the reaction to obtain a light yellow solid; the light yellow solid was ground to obtain a loose powder, the loose The powder is nano photocatalyst g-C 3 N 4 .

[0049] 2) Hybrid material graphene / C 3 N 4 preparation of

[0050] Take out the graphene oxide solution with a concentration of 5mg / mL from the refrigerator at 4°C, and perform the first ultrasonic treatment to make the graphene oxide dispersion form a uniform dispersion; Centrifuge at a speed of 5000r / min, remove the aggregates in the lower layer after centrifugation, and obtain the upper layer solution...

Embodiment 2

[0054] Except the nano photocatalyst g-C of " 13g in embodiment 1 step 3) 3 N 4 "Changed to" 0.5g nano photocatalyst g-C 3 N 4 ", except that GC8.0 is obtained, other all prepare hybrid material graphene / C in the same manner as in Example 1 3 N 4 .

Embodiment 3

[0056] Except the nano photocatalyst g-C of " 13g in embodiment 1 step 3) 3 N 4 "Changed to" 40g nano photocatalyst g-C 3 N 4 ", get except GC0.1; Others all prepare the hybrid material graphene / C in the same manner as in Example 1 3 N 4 .

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Abstract

The invention discloses a hybrid material graphene / C3N4 for photocatalytically degrading fungaltoxin. The hybrid material graphene / C3N4 with a layer-layer-layer assembly structure is prepared from graphene oxide and a nanometer photocatalyst g-C3N4 according to the mass ratio being (0.1-10):100 through a hydro-thermal synthesis method. In addition, the influence of the hybrid material graphene / C3N4 on photocatalytic degradation of the fungaltoxin is inspected through the conditions of the graphene modifying amount, photodegradation time and the like. The high-activity hybrid material graphene / C3N4 with visible-light responses is prepared through the hydrothermal method, the process is simple, the hybrid material graphene / C3N4 is suitable for industrial volume production, the photocatalytic degradation technology is applied to the field of fungaltoxin degrading, and high application prospects and practical value are achieved.

Description

technical field [0001] The invention belongs to the field of analytical chemistry, in particular to a hybrid material graphene / C for photocatalytic degradation of mycotoxins 3 N 4 And its preparation method and application Background technique [0002] Mycotoxins are secondary metabolites produced by some fungi, such as Aspergillus, Penicillium and Fusarium, during the growth process, which can easily cause pathological changes and physiological metamorphosis in humans and animals, and are highly toxic to humans and animals. So far, 300 kinds of mycotoxins have been found, among which the representative mycotoxins are trichothecenes (such as DON), zearalenone (ZEN), fumonisin B 1 (FB 1 ), aflatoxin (AFT), ochratoxin A (OTA) and T-2 toxin, etc. Mycotoxins enter the food chain after contaminating food and feed, thereby affecting animal performance and human health. Due to the wide variety of chemical, biological and toxicological properties of mycotoxins, their toxic effe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24A23L5/20
CPCB01J27/24B01J37/10B01J35/39
Inventor 白小娟孙长坡罗晓宏伍松陵王峻柴成梁
Owner ACAD OF NAT FOOD & STRATEGIC RESERVES ADMINISTRATION
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