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900704

Sigma-Aldrich

Graphene oxide

greener alternative

paste, non-exfoliated

Synonym(s):

Graphene oxide nanoplatelets

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About This Item

Linear Formula:
CxHyOz
UNSPSC Code:
12352119
NACRES:
NA.23
Pricing and availability is not currently available.

Quality Level

100

form

paste

composition

C, ≥3% (by gravimetric analysis combined with EA)

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

greener alternative category

Enabling,

Related Categories

General description

Handling of large quantities of GO powder is not recommended since graphene oxide powder is thermally unstable. Graphene oxide paste can make storage and transportation of large quantities in a safe manner. Graphene oxide solutions of desired concentration or graphene oxide paper or sheet can be made from graphene oxide paste. Sonication is required to obtain single layers of graphene oxide. To make a concentrated aqueous dispersion that will not settle under gravity: add 25 mL water/1 g paste, stir overnight for 16 h, sonicate for 30 minutes in a mild bath sonicator. Centrifuge (effective diameter of the rotor is 23 cm) at 3500 rpm for 10 minutes to remove any large unexfoliated particles and decant the supernate to give ∼2 mg/mL graphene oxide in water. The above concentrate can be diluted and sonicated further to get single layer graphene oxide.
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product belongs to Enabling category of greener alternatives thus aligns with "Design for energy efficency". High concentrated graphene oxide sheets provide the prerequisite viscosity to bind the electrode materials together and enable 3D printing. Using water as a green solvent makes this aqueous ink system feasible for processing and drying safety and low cost. Click here for more information.

Application

  • Composites.
  • Inks and coatings.
  • Transparent conductive films.
  • Supercapacitors.
  • Batteries.
  • Graphene oxide sheets at interfaces.
This product can be used in material extrusion 3D printing technique.

Pictograms

Corrosion
GHS05

Signal Word

Warning

Hazard Statements

H290,H315,H319

Hazard Classifications

Eye Irrit. 2 - Met. Corr. 1 - Skin Irrit. 2

Storage Class Code

8B - Non-combustible corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKCV8046
MKCV8047
MKCW5492
MKCT7643
MKCT7644

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Graphene ink, solids content 40%, 100 g, viscosity 5.5 Pa.s 

GF62304476

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Graphene nanoplatelets powder, polycarboxylate functionalized, hydrophilic

Sigma-Aldrich

806625

Graphene nanoplatelets

Amperometric enzyme-free glucose sensor based on the use of a reduced graphene oxide paste electrode modified with electrodeposited cobalt oxide nanoparticles.
Hassan H, and Esmaeil H
Microchimica Acta, 183(7), 2259-2266 (2016)
Seungae Lee et al.
Nanoscale, 8(40), 17551-17559 (2016-10-08)
A highly transparent paste adhesive is successfully fabricated by introducing graphene oxide (GO) to silicone paste adhesive by using a solvent-exchange method. The GO incorporated in the paste adhesive has a significant role in improving thermal conductivity, transparency and adhesive

Questions

1–5 of 5 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  3. 900704 Graphene OXide 25 g 900704-25G, regrading the above product, I am interested to know if it is useful for biological application?

    1 answer

    1. This product is not tested for use in biological applications. However, graphene oxide is generally used in biological applications such as drug delivery, bioimaging, biosensing, and therapeutics.

      Helpful?

  4. I know you can not determine the molecular weight of graphene oxide, but is their an approximate or range of molecular weights I could calculate with?

    1 answer

    1. Unfortunately, the molecular weight of this product is not determined.

      Helpful?

  5. Hello, I want to know more about the product, like whether it is graphene oxide (GO) or graphite oxide (GT), as the picture does not show the functional groups of the graphene oxide (GO). how to make the single layer graphene oxide from this powder.

    1 answer

    1. 900704 is a graphene oxide paste. Unfortunately, the functional group of the graphene oxide is not determined. To obtain a single layer of graphene oxide, dilute the aqueous paste with distilled or de-ionized water, preferably while stirring. Never dry the paste. Then use a sonication bath for about 0.5-1 hr. To obtain single sheets, the concentration should be below 0.04 wt%.

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