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Carbon quantum dot/attapulgite nanocomposite as well as preparation method and application thereof

A technology of nanocomposite materials and carbon quantum dots, which is applied in the field of carbon quantum dots/attapulgite nanocomposite materials and their preparation, and can solve the problems of high temperature and high pressure, expensive hydrogen, etc.

Active Publication Date: 2017-07-14
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although traditional hydrodesulfurization has been widely used, it requires high temperature and high pressure and expensive hydrogen

Method used

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  • Carbon quantum dot/attapulgite nanocomposite as well as preparation method and application thereof
  • Carbon quantum dot/attapulgite nanocomposite as well as preparation method and application thereof
  • Carbon quantum dot/attapulgite nanocomposite as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Weigh 0.32g, 0.9mol L of citric acid -1 Add 1mL of hydrogen peroxide and 1g of attapulgite into 10ml of deionized water and ultrasonically stir thoroughly, then transfer the mixed solution to a hydrothermal reaction kettle, react at 160°C for 8h, wash thoroughly with water and absolute ethanol, and place in an oven at 80°C drying, and then grinding to obtain the CQDs / ATP nanocomposite material.

[0017] X-ray powder diffraction was performed on the obtained CQDs / ATP nanocomposites, as figure 1 As shown, the characteristic peaks of carbon quantum dots and attapulgite appeared in the XRD of the composite material, indicating that carbon quantum dots and attapulgite were successfully composited;

[0018] The morphology of CQDs / ATP nanocomposites was observed by transmission electron microscopy: TEM images of ATP are shown in figure 2 As shown, the attapulgite presents a nanorod-like structure; the TEM image of the obtained CQDs / ATP in this example is shown in image 3 ...

Embodiment 2

[0028] Weigh 0.12g, 0.9mol L of citric acid -1 Add 0.375mL of hydrogen peroxide and 1g of attapulgite into 10ml of deionized water and ultrasonically stir thoroughly, then transfer the mixed solution to a hydrothermal reaction kettle, react at 120°C for 24h, wash thoroughly with water and absolute ethanol, and place in an oven at 80°C The CQDs / ATP nanocomposite can be obtained after drying in medium temperature and then grinding. Subsequent detection was as in Example 1.

Embodiment 3

[0030] Weigh 0.21g, 0.9mol L of citric acid -1 Add 0.66mL of hydrogen peroxide and 1g of attapulgite into 10ml of deionized water and ultrasonically stir thoroughly, then transfer the mixed solution to a hydrothermal reaction kettle, react at 140°C for 20h, wash thoroughly with water and absolute ethanol, and place in an oven at 80°C The CQDs / ATP nanocomposite can be obtained after drying in medium temperature and then grinding. Subsequent detection was as in Example 1.

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Abstract

The invention belongs to the field of new chemical materials and in particular relates to a carbon quantum dot / attapulgite nanocomposite as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing citric acid, hydrogen peroxide and attapulgite, carrying out hydrothermal reaction, and then centrifuging, washing and drying, so that the carbon quantum dot / attapulgite nanocomposite is obtained, and then the nanocomposite is used for photocatalytic desulphurization.

Description

technical field [0001] The invention belongs to the field of new chemical materials, in particular to a carbon quantum dot / attapulgite nano-composite material and its preparation method and application. Background technique [0002] The conversion of sulfur compounds in fuel to SOx gradually leads to air pollution and acid rain formation. In order to reduce the harmful effects on human health and the environment, there is an urgent need to reduce the sulfur content in fuels. [0003] Although traditional hydrodesulfurization has been widely used, it requires high temperature, high pressure and expensive hydrogen. In addition, due to the strong stability of dibenzothiophene and its derivatives such as 4,6-dimethyldibenzothiophene under hydrogenation conditions, it is difficult to meet the requirements of deep desulfurization, including oxidative desulfurization, extraction desulfurization, biological Alternative methods such as desulfurization and adsorption desulfurization...

Claims

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Application Information

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IPC IPC(8): B01J21/18C10G27/12
CPCC10G27/12B01J21/18C10G2300/202B01J35/39
Inventor 李霞章马素娟陆晓旺姚超左士祥刘文杰魏科年
Owner CHANGZHOU UNIV
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