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Preparation method of porous graphene oxide/CaO/glucose composite adsorbent

A compound adsorption and glucose technology, applied in chemical instruments and methods, alkali metal oxides/hydroxides, alkali metal compounds, etc., can solve the problems of difficult recovery and poor repeatability, and achieve good adsorption effect

Inactive Publication Date: 2019-04-05
XIANYANG NORMAL UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, purely using graphene oxide as an adsorbent has the disadvantages of difficult recycling and poor repeatability due to the hydrophilic nature of graphene oxide.

Method used

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  • Preparation method of porous graphene oxide/CaO/glucose composite adsorbent
  • Preparation method of porous graphene oxide/CaO/glucose composite adsorbent
  • Preparation method of porous graphene oxide/CaO/glucose composite adsorbent

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Experimental program
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Embodiment Construction

[0025] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] (1) Comparison of dye adsorption properties

[0027] Accurately weigh 0.2500g of methylene blue, acridine orange and orange IV samples respectively, dissolve and dilute to a 250mL volumetric flask to prepare 1g L -1 dye solution.

[0028] Weigh several parts of 0.0100g porous graphene oxide composite material, graphene oxide composite material and composite material without graphite oxide, and add the three weighed samples into the above-mentioned 25.00mL 40mg·mL -1 in the colorimetric tube containing the dye solution. After 24 hours of adsorption, measure the absorbance of the solution at the maximum absorption wavelength of each dye. The maximum absorption wavelengths of several dyes are: methylene blue: λ=660nm, acridine orange: λ=488nm, orange IV: λ=443nm, according to the standard The concentr...

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Abstract

The invention discloses a preparation method of a porous graphene oxide / CaO / glucose composite adsorbent, including the steps of firstly, preparation of graphene oxide, to be specific, preparing graphene oxide by a modified Hummer's experimental method; secondly, preparation of a porous graphene oxide / CaO / glucose composite. The porous graphene oxide / CaO / glucose composite has good adsorption effectto dyes of acridine orange, the optimal adsorptive pH value of the adsorbent is equal to 8, and adsorption balance is achieved at the time of 200 minutes. NaCl solution added has great influence on the adsorbability of the adsorbent and isopropanol has low influence on the adsorbability of the adsorbent, that is to say, the porous graphene oxide / CaO / glucose composite has adsorption effect to acridine orange under electrostatic interaction. The adsorbent can be reused for three times.

Description

technical field [0001] The invention belongs to the technical field of chemistry, in particular, relates to the technical field of dye sewage prevention and control, and relates to a preparation method of a porous graphene oxide / CaO / glucose composite adsorbent Background technique [0002] With the continuous development of the dye industry, the amount of dye wastewater is increasing, and the treatment of dye wastewater has always been a difficult problem in wastewater treatment. [0003] Graphene oxide is a product obtained by oxidation of graphite. It consists of a single layer of carbon atoms to form a two-dimensional network structure. Graphene oxide is rich in oxygen-containing functional groups, and the introduced -OH and -CH(O)CH- functional groups are distributed in On the two-dimensional surface, functional groups such as -COOH and -C=O are distributed at its edges. The large specific surface area of ​​graphene oxide and the presence of oxygen-containing functional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/28B01J20/22B01J20/30C02F1/28C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J20/041B01J20/20B01J20/22B01J20/28054C02F1/28C02F1/281C02F1/283C02F1/286C02F2101/308C02F2101/34C02F2101/36C02F2101/38C02F2101/40
Inventor 王欢
Owner XIANYANG NORMAL UNIV
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