Reduced Graphene Oxide Dispersion Liquid (with chemical reduction process)

Product Details

Product Description:

Graphene material produced starting from GO with chemical reduction or thermal reduction process will be called reduced graphene oxide(rGO). In some applications, GO to rGO’s reduction is done during the material composite process.First, using GO's good surface wettability for dispersion, then in-situ reduction is carried out to achieve the composite of different materials. RGO’s surface defect site is relatively lesser than GO and it is more closer to single-layer graphene in structure and property.The most commonly used dispersant is deionized water, while ethanol,NMP, DMF, etc., can also be used as a dispersant for rGO.

Product advantages：

1.Thin layer, stable dispersion, easy for processing

2.Better lubrication effect, lower layer, with better wear resistance, is a good composite material.

3.rGO dispersion liquid(with chemical reduction process) still keep a little oxygen-containing functional groups,the properties are more active then GNP(graphene produced by physical method), will be more easier to graft modification then composite with other materials. rGO products can be customized according to different reduction methods and reducing agents.

Technical Specification:

layers:1~5

specific surface area（m2/g）:350~450

Carbon Conten（%）:85~90

Oxygen Content（%）:8~13

particle size（D50=μm）:＜5μm

state:dispersion liquid

PH Value:6~7

Product Mode:SY-rGO-L

Product Specification: 50ml/bottle,100ml/bottle,250ml/bottle,500ml/bottle,1000ml/bottle

Dispersion Concentration (mg/mL): 0.5、1.0、2.0、5.0、10

Brand：SmartCmeta

Abbreviation: rGO

Preparation method: chemical reduction process

Raw material: natural flake graphite

Dispersion stability: relatively stable

Place of origin: Beijing, Xiamen

Price：Cheaper in a bulk order

Customization：Customization is acceptable

Frequently Asked Questions:

Q: What is reduced graphene oxide?

A: Reduced graphene oxide(rGO) is produced by GO after reduction.The chemical reduction process produced rGO compare with physical method produced graphene nanoplatelets(GNP), still keep two defects: one is residual oxygen-containing functional groups,hydroxyl and carboxyl groups can be effectively reduced, but carbonyl groups are difficult to be reduced; the other one is the hole, during the process of rGO , the oxidation and washing stage will lead to the loss of carbon skeleton and the formation of holes in the lamellar layer, which can not be repaired during reduction.

Q: What types of graphene materials are there?

A: According to the different preparation processes, graphene materials can be divided into two categories: graphene oxide and graphene, and graphene can be divided into graphene nanoplatelets prepared by physical method, usually denoted by GNP, and reduced graphene oxide prepared by chemical reduction process, usually denoted by rGO, according to the different preparation processes.

Q: What are the different conditions of use for these three types of graphene products?

A: GO has better hydrophilicity and can be stably dispersed in water without adding any additives, but some lattice defects are introduced in the process of oxidative intercalation, so GO is almost non-conductive; GNP has a complete lattice and better electrical conductivity, but GNP is highly hydrophobic and extremely difficult to be dispersed without dispersing additives and the number of layers is higher than that of graphene oxide.The conductivity and dispersibility of rGO is between GO and GNP, and it is necessary to add appropriate amount of dispersing additives in the process of using.

Q:Has the rGO dispersion liquid been ultrasonically treated ? Does it need to be ultrasonically dispersed again before use?

A:The rGO dispersion liquid has been ultrasonically treated before shipping, because dispersion of rGO is worse than GO, we advise to repeat the ultrasound for 5~10min before use.