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Double metal oxide-hyperbranched polymer adsorbent and preparation method thereof

A technology of hyperbranched polymers and double metal oxides, applied in chemical instruments and methods, adsorption of water/sewage treatment, water pollutants, etc., can solve the problem of insignificant adsorption effect, poor adsorption performance, and inability to completely adsorb heavy metals Ion and other problems, to achieve good adsorption effect, enhance the effect of adsorption performance

Pending Publication Date: 2020-02-07
王柏君
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the present invention provides a double metal oxide-hyperbranched polymer adsorbent and its preparation method, which solves the problem that the chemical precipitation adsorbent easily makes the water body alkaline and causes secondary pollution. It solves the problem that the physical adsorbent has poor adsorption performance, the adsorption effect is not obvious, and the heavy metal ion cannot be completely adsorbed. At the same time, compared with the biosorbent, the raw material is obtained from the solution, the preparation method is simple, and the cost is low.

Method used

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  • Double metal oxide-hyperbranched polymer adsorbent and preparation method thereof

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preparation example Construction

[0025] The preparation method of Ni-Fe layered double metal oxide comprises the following steps: add 200-1500mL distilled water to the reaction flask, then add nickel chloride and iron trichloride successively, the NiCl in the nickel chloride and ferric chloride 2 with FeCl 3 The molar ratio of the substance is 2.5-3.5:1, stir evenly until dissolved, then slowly add sodium hydroxide while stirring until the pH of the solution is 11-12, transfer the solution into the hydrothermal synthesis reactor, and place it in the reactor for heating Heat it in the box to 160-170°C, react for 4-8h, then place the solution in a high-speed centrifuge at a centrifugal speed of 8000-12000rpm, and perform centrifugation to remove the upper aqueous solution, wash the obtained solid mixture with an appropriate amount of distilled water, and then place Heat to 40-60°C in a blast drying oven to completely dry the water to obtain Ni-Fe layered double metal oxide.

[0026] Polyethylene hyperbranched po...

Embodiment 1

[0033] (1) Preparation of Ni-Fe layered double metal oxide: add 200mL distilled water to the reaction flask, then add nickel chloride and ferric chloride successively, NiCl in the nickel chloride and ferric chloride 2 with FeCl 3 The molar ratio of the substance is 2.5:1, stir until dissolved, slowly add sodium hydroxide while stirring until the pH of the solution is 11, transfer the solution into the hydrothermal synthesis reaction kettle, and place it in the reaction kettle heating box and heat it to 160°C, react for 4 hours, then place the solution in a high-speed centrifuge at a centrifugal speed of 8000rpm, and perform centrifugation to remove the upper aqueous solution, wash the obtained solid mixture with an appropriate amount of distilled water, and then place it in a blast drying oven and heat it to 40°C Completely dry the water to obtain the Ni-Fe layered double metal oxide component 1.

[0034] (2) prepare amidated polyethylene; Carry reflux device in the three-nec...

Embodiment 2

[0039] (1) Preparation of Ni-Fe layered double metal oxide: add 500mL distilled water to the reaction flask, then add nickel chloride and ferric chloride successively, the NiCl in the nickel chloride and ferric chloride 2 with FeCl 3 The molar ratio of the substance is 2.5:1, stir until dissolved, slowly add sodium hydroxide while stirring until the pH of the solution is 11, transfer the solution into the hydrothermal synthesis reaction kettle, and place it in the reaction kettle heating box and heat it to 160°C, react for 4 hours, then place the solution in a high-speed centrifuge at a centrifugal speed of 8000rpm, and perform centrifugation to remove the upper aqueous solution, wash the obtained solid mixture with an appropriate amount of distilled water, and then place it in a blast drying oven and heat it to 40°C Completely dry the water to obtain the Ni-Fe layered double metal oxide component 2.

[0040] (2) prepare amidated polyethylene; Carry reflux device in the three...

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Abstract

The invention relates to the technical field of metal ion adsorption materials, and discloses a double metal oxide-hyperbranched polymer adsorbent and a preparation method thereof. The double metal oxide-hyperbranched polymer adsorbent is prepared the following formula raw materials: Ni-Fe layered double metal oxide, a polyethylene hyperbranched polymer and a titanate coupling agent. According tothe double metal oxide-hyperbranched polymer adsorbent and the preparation method thereof, a positively charged Ni<2+>-Fe<3+> structure and interlayer negatively charged anions OH<-> and CO3<2-> in the Ni-Fe layered double metal oxide are subjected to non-covalent bond interaction to form a layered compound, the excellent magnetic properties have a good adsorption effect on heavy metal ions, active hydroxyl-OH exists on the surface, and CO3<2-> exists between layers, the layered compound can be subjected to complex reaction with heavy metal ions, the polyethylene hyperbranched polymer has a large number of active amino, imino groups and amide groups, the heavy metal ions are adsorbed through complexation and chelation mechanisms, and a charged end group of the polyethylene hyperbranched polymer forms an electrostatic adsorption effect with the heavy metal ions.

Description

technical field [0001] The invention relates to the technical field of heavy metal ion adsorption materials, in particular to a double metal oxide-hyperbranched polymer adsorbent and a preparation method thereof. Background technique [0002] Water pollution is caused by harmful chemical substances that reduce or lose the use value of water and pollute the environment. The main pollutants are acids, alkalis, inorganic salts, copper, cadmium, mercury, arsenic and other compounds, benzene, dichloroethane, ethane Organic toxic substances such as glycols mainly come from untreated industrial wastewater discharged, untreated domestic sewage discharged, farmland sewage caused by extensive use of chemical fertilizers, pesticides, and herbicides, industrial waste piled up by rivers and Household garbage and increasing water pollution have posed a major threat to human survival and safety, and have become a major obstacle to human health, economic and social sustainable development. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/20
CPCB01J20/265C02F1/285C02F2101/20
Inventor 王柏君
Owner 王柏君
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