Preparation of graphene oxide and post-processing method for waste liquor

Abstract

The invention relates to a preparation method for graphene oxide. The preparation method comprises the following steps: a. mixing a graphite powder and concentrated sulfuric acid at the low temperature; b. adding potassium permanganate, and heating to carry out an intermediate temperate reaction; c. adding water for a high temperature reaction, d. adding hydrogen peroxide aqueous solution for a reaction, and after finishing the reaction, filtering the obtained bright yellow solution; e. washing the filter cake with HCl aqueous solution; f. after drying the obtained solid, putting into water for stirring, and dialyzing; and g. removing a substrate by a centrifugal way to obtain a stable dispersion liquid of graphene oxide.

Description

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AI Technical Summary

Benefits of technology

This patented describes methods for producing high quality single layer or multi-ayered carbon materials with specific properties such as electrical conductivity, optical transparency, hydrophilicity, chemical stability, etc., without generating harmful emissions during production processes. These techniques can be applied to various industries including electronics manufacturing, energy storage devices, environmental remediation, biomedical applications, sensors, catalyst carriers, coatings, membranes, batteries, fuel cells, wires, cables, medical implants, smart windows, electronic displays, solar panels, battery electrodes, advanced composite material technology, and other fields where precise control over these qualities has become crucial due to their potential impact on human health issues like respiratory diseases caused by indoor air contamination.

Problems solved by technology

Technological Problem: Current Method Chemistry Previous Art describes various ways to make small amounts of graphane oxide, such as making them easier to handle on larger scales. Existing techniques involve either expensive reagents or complicated procedures involving several stages.

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