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Preparation method of bismuthyl carbonate-graphene oxide nanocomposite

A nano-composite, bismuth oxycarbonate technology, applied in the directions of carbon compounds, bismuth compounds, chemical instruments and methods, etc., achieves the effects of safe and reliable operation, easy industrial production, and improved product purity

Active Publication Date: 2018-05-11
BENGBU COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the preparation of bismuth oxycarbonate and its graphene-based nanocomposites by the solid-phase method can overcome some shortcomings of the liquid-phase method, there are few literatures on the preparation of bismuth oxycarbonate, especially its graphene-based nanocomposites, by the solid-phase method. , needs to be further searched for and developed a new preparation method of one-pot room temperature solid-phase chemical reaction with simple steps and green environmental protection, so as to highlight the convenience of operation, simplify steps, increase yield, reduce pollution, and avoid or reduce hard agglomeration of product particles

Method used

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  • Preparation method of bismuthyl carbonate-graphene oxide nanocomposite

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Embodiment 1

[0024] According to the molar ratio of 1:1, 0.01 moles of sodium bismuth dihydrate, 0.01 moles of oxalic acid dihydrate and 0.1 g of graphene oxide nanosheets were weighed and added to a 50 zirconia grinding balls with a diameter of 6 mm and 8 zirconia grinding balls with a diameter of 10 mm. In a 50mL zirconia ball mill, in a QM-3SP04 planetary high-energy ball mill at 480rpm for 2 hours, the product was washed with distilled water, centrifuged and vacuum-dried at 60°C and 0.1Mpa vacuum for 2 hours to obtain the target product.

[0025] XRD analysis of the product (see appendix figure 1 ), only Bi in the XRD pattern 2 O 2 CO 3 Characteristic diffraction peaks and weak graphene oxide diffraction peaks, no diffraction peaks of other phases exist, indicating that the solid-phase reaction between sodium bismuth and oxalic acid dihydrate is complete after 2.0 hours of ball milling. Calculated according to the Scherrer formula, Bi in the product 2 O 2 CO 3 The average grain ...

Embodiment 2

[0027]According to the molar ratio of 1:1, 0.01 moles of sodium bismuth dihydrate, 0.01 moles of oxalic acid dihydrate and 0.1 g of graphene oxide nanosheets were weighed and added to a 50 zirconia grinding balls with a diameter of 6 mm and 8 zirconia grinding balls with a diameter of 10 mm. In a 50mL zirconia ball mill, in a QM-3SP04 planetary high-energy ball mill at 480rpm for 10 hours, the product was washed with distilled water, centrifuged and vacuum-dried at 60°C and 0.1Mpa vacuum for 2 hours to obtain the target product.

[0028] The product was analyzed by XRD and calculated according to the Scherrer formula. Bi in the product 2 O 2 CO 3 The average grain size is 17.6 nm.

Embodiment 3

[0030] According to the molar ratio of 1:1, 0.01 moles of sodium bismuth dihydrate, 0.01 moles of oxalic acid dihydrate and 0.1 g of graphene oxide nanosheets were weighed and added to a 50 zirconia grinding balls with a diameter of 6 mm and 8 zirconia grinding balls with a diameter of 10 mm. In a 50mL zirconia ball mill, in a QM-3SP04 planetary high-energy ball mill at 480rpm for 4 hours, the product was washed with distilled water, centrifuged and vacuum-dried at 60°C and 0.1Mpa vacuum for 2 hours to obtain the target product.

[0031] The product was analyzed by XRD and calculated according to the Scherrer formula. Bi in the product 2 O 2 CO 3 The average grain size is 16.1 nm.

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Abstract

The invention discloses a preparation method of a bismuthyl carbonate-graphene oxide nanocomposite. According to the preparation method, after solid-phase raw materials of sodium bismuthate dihydrate,oxalate dihydrate and graphene oxide nanosheets are mixed, a ball-milling solid-phase reaction is performed; an obtained product is subjected to washing, centrifugal separation and drying to obtain atarget product Bi2O2CO3-GO nanocomposite. According to the invention, solid mixing is adopted; the raw material is subjected to the room-temperature ball-milling solid-phase reaction; the preparationprocess is simple; the preparation method is easy to control and aggregation of product particles can be greatly reduced; addition of an oxidation-reductant, a template agent and a solvent is avoided, so that purity of the product is improved, and the preparation method accords with the requirement for material green synthesis and is also suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of nanomaterials and preparation thereof, and in particular relates to a Bi 2 O 2 CO 3 - Preparation method of GO nanocomposites. Background technique [0002] The sustainable development of human society and economy is increasingly faced with two major problems of energy shortage and environmental degradation. Solving the problems of energy shortage and environmental pollution is an urgent need to achieve sustainable development, improve people's quality of life and ensure national security. [0003] Since the late 1970s, people have proposed the use of photocatalysts to degrade toxic and harmful organic compounds in water and the atmosphere. The principle of photocatalytic reaction is that the photocatalyst generates holes and electrons after absorbing photons with energy higher than its band gap. These holes and electrons undergo oxidation and reduction reactions respectively to degrade toxic and harmful chemica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G29/00C01B32/198B82Y30/00
CPCB82Y30/00C01G29/00C01P2002/72C01P2004/04C01P2004/80
Inventor 张茂林葛金龙刘伟王传虎高燕
Owner BENGBU COLLEGE
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