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Hybrid material graphene/ZnO 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 quantum yield, difficulty in separation and recovery of photocatalysts, narrow spectral response range, etc., and achieve the effect of simple process, high application prospect and practical value

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

However, the main problems include: low quantum yield, narrow spectral response range, and difficulties in the separation and recovery of photocatalysts.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1) Preparation of graphene / ZnO hybrid material

[0050] Take 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; then the ultrasonically treated graphene oxide dispersion is Perform centrifugation at a speed of 5000r / min. After centrifugation, the lower layer aggregates are removed to obtain the upper layer solution; the upper layer solution is subjected to a second ultrasonic treatment to peel off the graphene oxide in the upper layer solution; The upper layer solution is centrifuged at a speed of 10000r / min. After the centrifugal treatment, the unstripped graphene oxide on the upper layer is removed to obtain exfoliated graphene oxide; 200mg of the stripped graphene oxide is dispersed in 100mL deionized water, and the second step is continued. Three times of ultrasonic treatment, the stripped graphene oxide is evenly dispersed i...

Embodiment 2

[0054] Except that the "13g of nano-photocatalyst ZnO" in step 3) of Example 1 was changed to "0.5g of nano-photocatalyst ZnO" to obtain GZ8.0, the hybrid materials were prepared in the same manner as in Example 1. graphene / ZnO.

Embodiment 3

[0056] Except that “13g of nano-photocatalyst ZnO” in step 3) of Example 1 was changed to “40g of nano-photocatalyst ZnO” to obtain GZ0.1; the others were the same as in Example 1 to prepare the hybrid material graphene / ZnO.

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Abstract

The invention discloses a hybrid material graphene / ZnO for photocatalytically degrading fungaltoxin. The hybrid material graphene / ZnO is prepared from graphene oxide and a nanometer photocatalyst ZnO 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 / ZnO 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 / ZnO is prepared through the hydrothermal method, the process is simple, the hybrid material graphene / ZnO 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, and specifically relates to a hybrid material graphene / ZnO for photocatalytic degradation of mycotoxins, and a preparation method and application thereof Background technique [0002] Mycotoxins are secondary metabolites produced by some fungi, such as Aspergillus, Penicillium and Fusarium, that can easily cause pathological changes and physiological abnormalities in humans and animals. They are highly toxic to humans and animals. So far, 300 types of mycotoxins have been discovered, among which the representative mycotoxins are trichothecenes (such as DON), zearalenone (ZEN), and fumonisins B 1 (FB 1 ), aflatoxin (AFT), ochratoxin A (OTA) and T-2 toxin, etc. After mycotoxins contaminate grain and feed, they enter the food chain, thereby affecting animal production performance and people's health. Due to the diverse chemical, biological and toxicological properties of mycotoxins, their toxic effec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/06A23L5/20
CPCB01J23/06B01J37/10B01J35/39
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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