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A reduced graphene oxide/iron tetroxide/cdsete@zns@sio 2 Preparation method of nanocomposite

A technology of iron ferric oxide and nanocomposites, applied in the direction of iron oxide/iron hydroxide, graphene, chemical instruments and methods, etc., to achieve the effects of simple preparation method, high electrochemiluminescence intensity, and uniform particle shape

Active Publication Date: 2020-06-05
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently based on reduced graphene oxide / ferric oxide / CdSeTe@ZnS@SiO 2 Nanocomposites have not been reported

Method used

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  • A reduced graphene oxide/iron tetroxide/cdsete@zns@sio <sub>2</sub> Preparation method of nanocomposite
  • A reduced graphene oxide/iron tetroxide/cdsete@zns@sio <sub>2</sub> Preparation method of nanocomposite
  • A reduced graphene oxide/iron tetroxide/cdsete@zns@sio <sub>2</sub> Preparation method of nanocomposite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Add 105 mg of graphene oxide into 35 mL of ethylene glycol and sonicate for 30 min to obtain a uniformly dispersed graphene oxide suspension.

[0022] (2) Add 0.75 g of ferric chloride to the mixed solution obtained in the first step, and stir for 20 minutes to dissolve it.

[0023] (3) Add 1.80 g of sodium acetate to the mixed solution obtained in the second step, and stir for 60 minutes to dissolve it.

[0024] (4) Pour the above mixture into a polytetrafluoroethylene reactor, conduct a hydrothermal reaction at 180°C for 12 hours, wash with deionized water and ethanol three times each, and dry in vacuum at 60°C to obtain a reduced graphene oxide / ferric oxide nanocomposite things.

[0025] (5) The obtained reduced graphene oxide / ferric oxide nanocomposite is dispersed in 0.2% polydiallyl dimethyl ammonium chloride solution, ultrasonic 30min, obtains black solution, then washes three times with deionized water, The reduced graphene oxide / ferric oxide nanocomposite...

Embodiment 2

[0029] (1) Add 90 mg of graphene oxide into 35 mL of ethylene glycol and sonicate for 60 min to obtain a uniformly dispersed graphene oxide suspension.

[0030] (2) Add 0.80 g of ferric chloride to the mixed solution obtained in the first step, and stir for 30 minutes to dissolve it.

[0031] (3) Add 1.50 g of sodium acetate to the mixed solution obtained in the second step, and stir for 60 minutes to dissolve it.

[0032] (4) Pour the above mixture into a polytetrafluoroethylene reactor, conduct a hydrothermal reaction at 160°C for 24 hours, wash with deionized water and ethanol three times each, and dry in vacuum at 60°C to obtain a reduced graphene oxide / ferric oxide nanocomposite things.

[0033] (5) The obtained reduced graphene oxide / ferric oxide nanocomposite is dispersed in 0.1% polydiallyl dimethyl ammonium chloride solution, ultrasonic 60min, obtains black solution, then washes three times with deionized water, The reduced graphene oxide / ferric oxide nanocomposite ...

Embodiment 3

[0036] (1) Add 150 mg of graphene oxide into 35 mL of ethylene glycol and sonicate for 15 min to obtain a uniformly dispersed graphene oxide suspension.

[0037] (2) Add 0.75 g of ferric chloride to the mixed solution obtained in the first step, and stir for 20 minutes to dissolve it.

[0038] (3) Add 1.80 g of sodium acetate to the mixed solution obtained in the second step, and stir for 30 minutes to dissolve it.

[0039] (4) Pour the above mixture into a polytetrafluoroethylene reactor, conduct a hydrothermal reaction at 180°C for 12 hours, wash with deionized water and ethanol three times each, and dry in vacuum at 60°C to obtain a reduced graphene oxide / ferric oxide nanocomposite things.

[0040] (5) The obtained reduced graphene oxide / ferric oxide nanocomposite is dispersed in 0.1% polydiallyl dimethyl ammonium chloride solution, ultrasonic 60min, obtains black solution, then washes three times with deionized water, The reduced graphene oxide / ferric oxide nanocomposite...

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Abstract

A reduced graphene oxide / ferric oxide / CdSeTe@ZnS@SiO 2 The preparation method of the nanocomposite comprises the following steps: adding 60 to 150 mg of graphene oxide into ethylene glycol, ultrasonicating for 15 to 60 minutes to obtain a uniformly dispersed suspension; adding 0.5 to 1 g of ferric chloride, and stirring for 10 to 30 minutes to make it Dissolve; then add 1.50~2.00g sodium acetate, stir for 30~90min to dissolve; transfer the above mixture to a polytetrafluoroethylene reactor, react at 160~180℃ for 6~24h, wash with deionized water and ethanol three times , dried under vacuum at 60°C to obtain a reduced graphene oxide / ferric oxide nanocomposite. Disperse the above product into a 0.1-0.5% polydiallyldimethylammonium chloride solution, sonicate for 30-60 minutes, wash with deionized water three times, and then add deionized water to prepare a 0.5 mg / mL solution. Mixing the reduced graphene oxide / Fe3O4 nanocomposite solution with CdSeTe@ZnS@SiO 2 The quantum dots are mixed according to the volume ratio of 1:2 to 1:5, shaken for 5 to 30 minutes, and then left to stand for 6 to 24 hours to obtain reduced graphene oxide / ferric oxide / CdSeTe@ZnS@SiO 2 complex solution.

Description

Technical field: [0001] The invention relates to a reduced graphene oxide / ferric oxide / CdSeTe@ZnS@SiO 2 Preparation of nanocomposites. Background technique: [0002] In 2004, British physics professors K.S. Novoselov and A.K. Geim used a simple method to obtain graphene. Graphene has attracted the attention of the scientific community because of its excellent properties. As a kind of graphene derivative, reduced graphite oxide not only has good processability, but also has a large specific surface area and good conductivity, and its oxygen-containing functional groups can also provide active sites for enzyme immobilization. [0003] The electrochemiluminescence process relies on the efficient electron transfer process at the electrode surface to generate an excited state, which produces photon radiation when it transitions back to the ground state. Due to their excellent electrochemiluminescent properties, quantum dots have important application value in biological analysi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184C01G49/08C01B19/00C01G9/08C01B33/12C09K11/02C09K11/88H01F1/01B82Y30/00
Inventor 毛昌杰童俊袁正刘苹贞杨影袁明月王莹吉国奇张胜义牛和林金葆康
Owner ANHUI UNIVERSITY
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