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A kind of petroleum liquid product-based graphene quantum dot and its preparation method and application

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: 2020-10-02
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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  • A kind of petroleum liquid product-based graphene quantum dot and its preparation method and application
  • A kind of petroleum liquid product-based graphene quantum dot and its preparation method and application
  • A kind of petroleum liquid product-based graphene quantum dot and its preparation method and application

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Embodiment 1

[0055] The present embodiment provides a preparation method of diesel-based graphene quantum dots and catalytically cracked gasoline-based graphene quantum dots, comprising the following steps:

[0056] Step 1: Measure 3mL of concentrated sulfuric acid and 1mL of concentrated nitric acid at room temperature and place them in a 10mL glass test tube 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. mixed with 1 mL of concentrated nitric acid, and then put a 10 mL glass test tube into a 400W ultrasonic cleaner for 2 hours to obtain a diesel-based dispersion or a catalytically cracked gasoline-based dispersion;

[0057] In step 2, the above-mentioned dispersion is oxidized in an oil bath at 120° C. for 24 hours, cooled to room temperature, and adjusted to neutrality with a sodium hydroxide solution to obtain a crude product of graphene quantum dots;

[0058] Step 3, the crude ...

Embodiment 2

[0065] The present embodiment provides a preparation method of diesel-based graphene quantum dots and catalytically cracked gasoline-based graphene quantum dots, comprising the following steps:

[0066] In step 1, 1.5mL of concentrated sulfuric acid and 0.5mL of concentrated nitric acid were placed in a 5mL microreactor with a magnetic stirrer and mixed, cooled to room temperature, and 0.5mL of diesel or catalytically cracked gasoline was added respectively, and then the microreactor was put into 400W Ultrasonic in the ultrasonic cleaner for 2h to obtain diesel-based dispersion or catalytically cracked gasoline-based dispersion;

[0067] Step 2, the above dispersion is stirred and oxidized in a microreactor at 120 ° C for 24 h, cooled to room temperature, and adjusted to neutrality with sodium hydroxide;

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

Embodiment 3

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

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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, magnetic properties, low toxicity, good biocompatibility, strong resistance to photobleaching, and high fluorescence activity. It 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 methods and bottom-up methods. These mainly include: laser ablation, arc discharge, electrochemical oxidation, secondary oxidation, electron beam or ion beam etching, combustion, microwave, hydrothermal and sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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