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Preparation method and application for magnetic-nanosilver-graphene nano composite material l

A nano-composite material, graphene technology, applied in the application of the composite material in sterilization, the preparation field of magnetic-nano silver-graphene nano-composite material, can solve the problem of easy agglomeration price of silver nano-bactericide particles, and achieve Good sterilization effect, easy to disperse and simple method

Inactive Publication Date: 2015-08-19
ZHEJIANG GONGSHANG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a method for preparing a magnetic-nano-silver-graphene nanocomposite material, which solves

Method used

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  • Preparation method and application for magnetic-nanosilver-graphene nano composite material l
  • Preparation method and application for magnetic-nanosilver-graphene nano composite material l
  • Preparation method and application for magnetic-nanosilver-graphene nano composite material l

Examples

Experimental program
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Example Embodiment

[0042] Example 1:

[0043] Step 1: the preparation of graphene oxide; the preparation process of described graphene oxide comprises the following steps:

[0044] Step 1-1: With the temperature maintained at no higher than 5°C, slowly add 5g of 800-mesh graphite powder into a 1000ml large beaker containing 115ml of concentrated sulfuric acid while stirring. Slowly add the mixture of 2.5g sodium nitrate and 15g potassium permanganate, and react at low temperature for 15 minutes. In a constant temperature water bath at about 35 degrees, keep stirring for 30 minutes. Slowly add 230ml of warm water to raise the temperature to 98 degrees. After maintaining at this temperature for 15 minutes, dilute to 700ml with warm water, pour 50ml of 30% hydrogen peroxide, and filter while hot;

[0045] Step 1-2: Suction filter the suspension obtained in Step 1-1. Then wash the filter cake with 5% hydrochloric acid until there is no sulfate ion in the filtrate;

[0046] Step 1-3: fully dry t...

Example Embodiment

[0058] Example 2:

[0059] Step 1: preparation of graphene oxide; same as Example 1;

[0060] Step 2: Preparation of magnetic-graphene oxide nanocomposite material: the preparation method of the magnetic-graphene oxide nanocomposite material is the same as in Example 1 except that the raw material is reacted in a reactor for 4 hours;

[0061] Step 3: Preparation of magnetic-nanosilver-graphene nanocomposite material: same as Example 1.

Example Embodiment

[0062] Example 3:

[0063] Step 1: preparation of graphene oxide; same as Example 1;

[0064] Step 2: Preparation of magnetic-graphene oxide nanocomposites: the preparation method of the magnetic-graphene oxide nanocomposites, except FeCl 3 ·6H 2 The amount of O is 5.0g, all the other are with embodiment 1;

[0065] Step 3: Preparation of magnetic-nanosilver-graphene nanocomposite material: same as Example 1.

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Abstract

The invention discloses a preparation method and application of a magnetic nanosilver graphene nano composite material, wherein the method comprises the following steps: (1) preparing graphene oxide by virtue of Hummers method; (2) loading ferroferric oxide on the graphene oxide by virtue of a solvothermal method to obtain a magnetic-graphene oxide composite material; and (3) loading nanosilver to the magnetic graphene oxide composite by virtue of an oxidation reduction method to obtain the magnetic-nanosilver-graphene nano composite material. The obtained magnetic-nanosilver-graphene nano composite material is good in bactericidal effect, can be magnetically separated, and is widely used in drinking water treatment and biological medicines.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a preparation method of a magnetic-nanometer silver-graphene nanocomposite material, and also relates to the application of the composite material in sterilization. technical background [0002] Since the beginning of the 20th century, drinking water sterilization technology has begun to develop, which has guaranteed the prevention of disease transmission. At present, there are a variety of mature drinking water sterilization technologies in my country, including chlorine-based sterilization technology, ozone sterilization technology, ultraviolet sterilization technology, etc., all of which have relatively complete production technologies and equipment. However, these methods all have defects, such as causing secondary pollution to water bodies. [0003] At present, due to the large specific surface area, strong adsorption, and strong comprehensive p...

Claims

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Application Information

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IPC IPC(8): A01N59/16A01N25/00A01P1/00
Inventor 蒋璐丁晨舒朱义族蔡美强金米聪
Owner ZHEJIANG GONGSHANG UNIVERSITY
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