Method for removing heavy metal ions in water by using graphene oxide sheet

A technology of heavy metal ions and graphene sheets, applied in chemical instruments and methods, water pollutants, and other chemical processes, to achieve low cost, simple operation process, and good biocompatibility
CN101973620AInactive Publication Date: 2011-02-16SHANGHAI UNIV
1 Cites 68 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI UNIV
Publication Date
2011-02-16
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a method for removing heavy metal ions in water by using a graphene oxide sheet, which belongs to the technical fields of water purification and environmental protection. In the invention, the graphene oxide sheet is used as an adsorbent of the heavy metal ions, wherein the graphene oxide sheet is of a monatomic layer two-dimensional structure and has a huge specific surface while ensuring no obvious toxicity. In the purification process of the method, the operations are simple without pollution, and the copper ion adsorption efficiency is 10 times that of the active carbon. In the invention, the graphene oxide sheet adsorbing the metal ions can be recovered to the single sheet structure by a centrifugal separation or dialysis method and can be recycled.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for removing heavy metal ions in water by using graphene oxide sheets, and belongs to the technical field of water quality purification and environmental protection. Background technique

[0002] In recent years, my country is facing increasingly serious environmental problems such as water pollution. Heavy metals have become important pollutants in water pollution due to their high toxicity, non-degradability and easy accumulation in organisms. There are many methods to purify heavy metal ion polluted water, such as chemical precipitation, ion exchange, electrodialysis, adsorption and so on. Among these methods, adsorbent adsorption is a simple, efficient, and inexpensive method for removing heavy metal ions. The key to improving this method lies in the development of more efficient, environmentally friendly, and inexpensive adsorbent materials.

[0003] At present, many materials have been reported to remove heavy...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More