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Composite material and preparation method thereof

A composite material, biomass carbon technology, applied in chemical instruments and methods, other chemical processes, special compound water treatment, etc., can solve the problem of not finding rGO, and achieve low cost, reliable theoretical and practical support, and the preparation process can be control effect

Active Publication Date: 2021-04-06
厦门市建筑科学研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no literature report on the application of rGO in water pollution control materials in this field.

Method used

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  • Composite material and preparation method thereof
  • Composite material and preparation method thereof
  • Composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] a) Cut the hemp stalks into small pieces with a length of about 2 mm by using a pulverizer, wash them with ethanol, and dry them in an oven at 70°C for 8 hours, then take out the samples and place them in a tube furnace, and raise the temperature to 400°C under the protection of nitrogen, Calcined at this temperature for 2 hours to obtain biochar.

[0043] b) Soak 80mg of biochar in 40mL of phosphoric acid solution, under magnetic stirring, react at room temperature for 5min, then place it in an oil bath, adjust the temperature to 140°C, and evaporate the water at this temperature to obtain phosphorylated biomass carbon.

[0044] c) Add 20 mg of reduced graphene oxide (hereinafter referred to as rGO) into 25 mL of deionized water, sonicate for 2 h until it becomes a homogeneous suspension of rGO, then add 3 g of phosphorylated biochar to the suspension, and magnetically stir 2h, a homogeneous suspension was formed.

[0045] d) Then, evaporate the moisture in the above s...

Embodiment 2

[0049] a) Cut the hemp stalks into small pieces with a length of about 2mm using a pulverizer, wash them with ethanol and dry them in an oven at 70°C for 8 hours, take out the samples and place them in a tube furnace, raise the temperature to 400°C under the protection of nitrogen, and dry in the oven at 70°C. Calcined at high temperature for 2 hours to obtain biochar.

[0050] b) Soak 80mg of biochar in 40mL of phosphoric acid solution, under magnetic stirring, react at room temperature for 5min, then place it in an oil bath, adjust the temperature to 140°C, and evaporate the water at this temperature to obtain phosphorylated biomass carbon.

[0051] c) 20mg rGO was added to 25mL deionized water, and ultrasonically treated for 2h until it became a homogeneous suspension of rGO, then 3g of phosphorylated biochar was added to the suspension, and magnetically stirred for 2h to form a homogeneous suspension.

[0052] d) Evaporate the water in the homogeneous suspension in an oil...

Embodiment 3

[0056] a) Cut the ramie stalks into small pieces with a length of about 2mm by a pulverizer, wash them with ethanol and dry them in an oven at 75°C for 8 hours, take out the samples and place them in a tube furnace, and raise the temperature to 40°C under the protection of nitrogen. calcined for 2 hours to obtain biochar.

[0057] b) Soak 90 mg of biochar in 45 mL of phosphoric acid solution, under magnetic stirring, react at room temperature for 5 minutes, then place it in an oil bath, adjust the temperature to 140 ° C, and evaporate the water at this temperature to obtain phosphorylated biochar Substance charcoal.

[0058] c) 25mg rGO was added to 25mL deionized water, and ultrasonically treated for 2h until it became a homogeneous suspension of rGO, then 3g of phosphorylated biochar was added to the above suspension, and magnetically stirred for 2h to form a suspension.

[0059] d) Then, evaporate the water in the suspension in an oil bath, and place the remaining substanc...

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Abstract

The invention relates to a composite material and a preparation method thereof. The composite material comprises hollow three-dimensional phosphorylated biomass charcoal, hierarchical structure TiO2 and rGO. By combining the high specific surface area of the hollow phosphorylated biomass charcoal and rGO with the photocatalytic performance of TiO2, the composite material disclosed by the invention can be used for efficiently and quickly removing ammonia nitrogen. In addition, the preparation process of the composite material is controllable, the process conditions are simple, and the composite material is more suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of water pollution control materials, and in particular relates to a composite material and a preparation method thereof. Background technique [0002] With the rapid development of industry and agriculture, excessive fertilization of farmland and irrational use of pesticides lead to a large amount of nitrogen inflow into rivers and lakes, causing the water environment to become worse and worse. Excessive nitrogen elements will also cause eutrophication of water bodies and destroy the ecological balance of water bodies. The ammonia nitrogen treatment methods are divided into biological methods, physical methods and chemical methods. The biological treatment effect is better, but there are many influencing factors, and the management input and cost are high; the physical treatment effect is not high, and the chemical treatment is not conducive to recycling, and may cause secondary pollution. Therefore, it is necessary ...

Claims

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Application Information

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IPC IPC(8): B01J20/20C02F1/28C02F1/32B01J20/30B01J21/06B01J21/18B01J27/18B01J35/00
CPCB01J20/20C02F1/283C02F1/32B01J27/18B01J21/18B01J21/063C02F2305/10B01J35/39Y02W10/37
Inventor 王敏夏立新林清娴苏荣辉彭军芝
Owner 厦门市建筑科学研究院有限公司
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