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Petroleum liquid product-based graphene quantum dot, and preparation method and application thereof

A technology of graphene quantum dots and liquid products, applied in the field of nanomaterials, can solve the problems of low yield and high preparation cost of graphene quantum dots, and achieve the effects of excellent performance, reduction of cumbersome and redundant steps, and reduction of processing steps.

Active Publication Date: 2018-12-14
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of high cost and low yield in the preparation of graphene quantum dots in the prior art, the object of the present invention is to provide a method for preparing petroleum liquid product-based graphene quantum dots. The raw materials of the preparation method are easy to obtain and cheap , the preparation method is simple, and the prepared petroleum liquid product-based graphene quantum dots have excellent performance

Method used

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  • Petroleum liquid product-based graphene quantum dot, and preparation method and application thereof
  • Petroleum liquid product-based graphene quantum dot, and preparation method and application thereof
  • Petroleum liquid product-based graphene quantum dot, and preparation method and application thereof

Examples

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Embodiment 1

[0055] This implementation provides a kind of preparation method of diesel-based graphene quantum dots and catalytic cracking gasoline-based graphene quantum dots, which comprises the following steps:

[0056] Step 1: Measure 3mL of concentrated sulfuric acid and 1mL of concentrated nitric acid at room temperature, place them in a 10mL glass test tube that was added to the rotor, cool to room temperature, and slowly add 1mL (about 0.7-0.8g) of light diesel oil or FCC gasoline to 3mL of concentrated sulfuric acid and 1mL of concentrated nitric acid, then put a 10mL glass test tube into a 400W ultrasonic cleaner for 2 hours to obtain a diesel-based dispersion or catalytic cracking gasoline-based dispersion;

[0057] Step 2, oxidizing the above dispersion in an oil bath at 120° C. for 24 hours, cooling to room temperature, and adjusting it to neutrality with sodium hydroxide solution to obtain a crude product of graphene quantum dots;

[0058] Step 3, the crude product of the obt...

Embodiment 2

[0065] This implementation provides a kind of preparation method of diesel-based graphene quantum dots and catalytic cracking gasoline-based graphene quantum dots, which comprises the following steps:

[0066] Step 1: Mix 1.5mL of concentrated sulfuric acid and 0.5mL of concentrated nitric acid in a 5mL microreactor with a magnetic stirrer, cool to room temperature, add 0.5mL of diesel or FCC gasoline, and then put the microreactor into a 400W Ultrasonic cleaning instrument for 2 hours to obtain diesel-based dispersion or FCC gasoline-based dispersion;

[0067] Step 2, stirring the above dispersion in a microreactor at 120°C for 24 hours, cooling to room temperature, and adjusting to neutrality with sodium hydroxide;

[0068] Step 3, adding 100 mg of sodium borohydride (under ice bath conditions) to react for 4 hours to obtain a crude product of diesel-based graphene quantum dots or a crude product of catalytic cracking gasoline-based graphene quantum dots;

[0069] Step 4, c...

Embodiment 3

[0071] The operating conditions and steps are the same as in Example 2, except that the dialysis time is extended to 120 hours, and the dialysis water is changed every 24 hours.

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Abstract

The invention provides a petroleum liquid product-based graphene quantum dot, and a preparation method and an application thereof. The method comprises the steps: adding concentrated sulfuric acid andconcentrated nitric acid to a petroleum liquid product, and carrying out ultrasonic treatment to obtain a petroleum liquid product-based dispersion liquid; stirring the petroleum liquid product-baseddispersion liquid in a reactor, carrying out oxidation reaction, then cooling to room temperature, adjusting to neutral with an alkali, and thus obtaining a petroleum liquid product-based crude product; and centrifuging the obtained petroleum liquid product-based crude product, taking a supernatant, allowing to pass through a microporous filter membrane, carrying out dialysis interception to obtain the petroleum liquid product-based graphene quantum dot. The preparation method is simple, is low in cost, and reduces tedious and redundant steps. The prepared petroleum liquid product-based graphene quantum dot has the advantages of small size, uniform particle size, good water solubility and dispersibility and excellent performance, and can be widely applied in the field of ion detection, and especially is used for detection of copper ions in water bodies and living bodies.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and relates to a petroleum liquid product-based graphene quantum dot and a preparation method and application thereof. Background technique [0002] Graphene quantum dots have excellent physical and chemical properties. Such as electrical conductivity, thermal conductivity, magnetism, and low toxicity, good biocompatibility, strong anti-photobleaching ability, high fluorescence activity, has become a research hotspot of new materials in recent years, and is an ideal material for a new generation of medical applications, battery energy and functional devices. . At present, the preparation methods of graphene quantum dots are mainly divided into two categories: top-down method and bottom-up method. These mainly include: laser ablation method, arc discharge method, electrochemical oxidation method, secondary oxidation method, electron beam or ion beam etching method, combustion method, micro...

Claims

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Application Information

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IPC IPC(8): C01B32/184C09K11/65G01N21/64
CPCC01B32/184C09K11/65G01N21/6402
Inventor 王春霞潘彩文
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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