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Graphene Oxide Solution
  • Graphene Oxide Solution 100ml
- +
Spec Sheet MSDS
  • What is Graphene Oxide?

    Graphene Oxide is made by oxidizing graphite, followed by mechanical exfoliation into single layers of graphene. One of its strengths is that it can be easily dissolved into water or other organic solvents. In addition, it is possible to use various organic chemical reactions by introducing desired functional group properties of oxygen to use in polymer composites, chemical/bio-sensors, catalysts and applications in various areas.

  • Properties of Graphene Oxide
    • ㆍConcentration : 0.1g/100ml
    • ㆍFlake size : <1μm
    • ㆍType : Dispersion in H2O / Dried powder
    • ㆍAppearance : Brown
    • ㆍFlake thickness : 1-atom layer (>60%)
    • ㆍElectrical properties : Insulator
  • Applications
    • ㆍFunctional composite materials (fabric reinforcement, hybrid scaffold for tissue engineering, barrier for electromagnetic waves)
    • ㆍBiomedical & bio-imaging applications (drug delivery carrier, imaging probe, biosensor, photo-thermal therapy, enzyme activation catalyst)
    • ㆍEnergy conversion & storage system (battery & supercapacitor)
    • ㆍCatalyst for chemical reactions
    • ㆍFilter membrane for waste water treatment
Hummer’s Method Graphene Square has the know-how in making the best and standard method of Graphene Oxide by low salt to high monolayer ratio. Graphite powder is kept in an acidic environment for about a week to create dispersed reactions towards monolayers; then If you counter react the product from the strong acid solution, then Graphene Oxide is produced; Graphene Oxide solution can be made by mixing 1g/1L of DI water.

Customer List

Nokia Research Center Korea Advanced Institute of Science and Technology
King Abdullah University of Science and Technology Korea Basic Science Institute
Sensirion AG Gwangju Institute of Science and Technology
National University of Singapore Seoul National University
POSTECH SungKyunKwan University
Aalto University Kyunghee University
A&P Instrument National Cancer Center
Nanjing University Korea University
Bhai Bhai Enterprise
  • Graphene Square Advantages
    • World’s first large scale graphene synthesis towards commercialization.

      Nature Nanotechnology 2010 cover image.

    • Many years of know-how in transfer method.

      Coverage at above 95%, low residue. Most optimized R&D environment.

    • Our sample package is designed to minimize graphene damage.

      Vacuum packaged, nitrogen filled. Easy to handle.

    • Optimized Graphene

      We give advice and make suggestions to the beginners in graphene research. Offer Graphene on various and unique substrates.

    • Our commitment

      We promise to deliver a level of quality unmatched and to our customers’ satisfaction.

    • All about Graphene-from thermal CVD equipment to graphene synthesis and transfer process with know-how.

      Understanding of the whole process from the graphene synthesis, transfer, proper packaging with sound research is our key to success.

  • Delivery Packaging Process
    • 01 Vacuum packaging, nitrogen filled
    • delivery background 02 Air cushion packaging
    • delivery background 03 Ready for pick up by
      courier service
    Order process
    Order process Customer order and payment confirmation Produce graphene Packaging Delivery
    Status Review and confirm customer order Produce and inspect for high quality product Expert and protective packaging for S&H Estimated time of delivery is three business days Detailed shipment tracking on fedex.com
  • FAQ
    • I would like to know Graphene Square’s graphene synthesis and transfer process.

      1) Graphene synthesis process by Thermal CVD equipment
      2) PMMA coating
      3) Back side etching (using RIE)
      4) Cu foil etching using APS solution
      5) Rinse using DIW water
      6) Transfer onto substrate, dry by baking on hot plate
      7) Remove PMMA by dipping in Acetone
      8) Quality check (Optical microscope, Raman spectroscope)
      9) Vacuum package, shipping

    • Are you able to offer CVD Graphene on Cu foil in sizes besides what is currently being offered?

      Currently, the smallest size we offer [TCVD Graphene on Cu foil] is 50x50mm while the larger size offered is 80x80mm. If you are in need of smaller sizes then what we offer, we suggest that you purchase a 50x50mm and cut into required sizes. If you need sizes larger then 80x80mm, then you can send and email to below email address. info@graphenesq.com

    • I am handling graphene for the first time and I am trying to start with graphene on substrates (SiO2/Si wafer, glass, PET,,,). Please advise.

      It may be possible to purchase graphene on Cu foil and do the transfer process even as a beginner, however, there may be multiple trial and error processes. As a result, we would suggest purchasing our graphene transferred on substrates or if you are in need of our graphene transfer service, we can provide such service customers’ substrate as well. < Custom Made Order link >

    • For Stacked graphene, is the transfer process done after PMMA coating of each layer? If not, what is the transfer process for Stacked graphene?

      For multiple layers, we use graphene on Cu foil to initiate and perform overlapping process. The basic process is as follows: take [Graphene/Cu foil] and scoop from underneath [PMMA/Graphene] using DI water bath resulting in [PMMA/Graphene/Graphene/Cu foil]. Afterwards, Cu foil can be etched away and the above process can be repeated to make multiple layers of graphene.

    • Can graphene be mixed and used to make products using product molds or presses?

      As you may know, graphene can be acquired in two methods. 1) Top down: mechanically exfoliating carbon from graphite to make graphene powder or graphene oxide, 2) Bottom up: since carbon is composed of gas (ex. CH4, C2H4,,,) graphene film can be synthesized at high temperature through the CVD method. One of the options can be considered depending on the research goals. Due to graphene’s characteristics, the theoretical prices and actual sample prices can vary and the characteristics of graphene powder and graphene film differ as well. As a result, when mixing graphene with other materials, graphene powder may be more appropriate. You would have to perform tests to find the right mixture ratios, but generally, mixing graphene powder with other materials to further manufacture products using molds or presses are possible.

    • How can I make graphene samples on substrates using dry transfer method?

      For dry transfer, there are two main options: 1) Thermal release tape [TRT], 2) Pressure Sensitive Adhesive Film [PSAF]. The common requirement is that both methods require pressure using a laminator.
      1) TRT: apply TRT with level pressure and temperature (100~110℃) simultaneously so that graphene can be released from the base surface of TRT onto the target substrate [based upon long period of experience and know-how, TRT is the suggested option versus PSAF].
      2) PSAF: apply PSAF with level pressure from the base surface of PSAF onto the target substrate.

    • I would like to know Graphene Square’s graphene synthesis and transfer process.

      1) Graphene synthesis process by Thermal CVD equipment
      2) PMMA coating
      3) Back side etching (using RIE)
      4) Cu foil etching using APS solution
      5) Rinse using DIW water
      6) Transfer onto substrate, dry by baking on hot plate
      7) Remove PMMA by dipping in Acetone
      8) Quality check (Optical microscope, Raman spectroscope)
      9) Vacuum package, shipping

    • Are you able to offer CVD Graphene on Cu foil in sizes besides what is currently being offered?

      Currently, the smallest size we offer [TCVD Graphene on Cu foil] is 50x50mm while the larger size offered is 80x80mm. If you are in need of smaller sizes then what we offer, we suggest that you purchase a 50x50mm and cut into required sizes. If you need sizes larger then 80x80mm, then you can send an email request to below email address. info@graphenesq.com

    • I would like to know Graphene Square’s graphene synthesis and transfer process.

      1) Graphene synthesis process by Thermal CVD equipment
      2) PMMA coating
      3) Back side etching (using RIE)
      4) Cu foil etching using APS solution
      5) Rinse using DIW water
      6) Transfer onto substrate, dry by baking on hot plate
      7) Remove PMMA by dipping in Acetone
      8) Quality check (Optical microscope, Raman spectroscope)
      9) Vacuum package, shipping

    • I am handling graphene for the first time and I am trying to start with graphene on substrates (SiO2/Si wafer, glass, PET,,,). Please advise.

      It may be possible to purchase graphene on Cu foil and do the transfer process even as a beginner, however, there may be multiple trial and error processes. As a result, we would suggest purchasing our graphene transferred on substrates or if you are in need of our graphene transfer service, we provide such service on customers' substrates as well. < Custom Made Order link >

    • I would like to know Graphene Square’s graphene synthesis and transfer process.

      1) Graphene synthesis process by Thermal CVD equipment
      2) PMMA coating
      3) Back side etching (using RIE)
      4) Cu foil etching using APS solution
      5) Rinse using DIW water
      6) Transfer onto substrate, dry by baking on hot plate
      7) Remove PMMA by dipping in Acetone
      8) Quality check (Optical microscope, Raman spectroscope)
      9) Vacuum package, shipping

    • Can graphene be mixed and used to make products using product molds or presses?

      As you may know, graphene can be acquired in two methods. 1) Top down: mechanically exfoliating carbon from graphite to make graphene powder or graphene oxide, 2) Bottom up: since carbon is composed of gas (ex. CH4, C2H4,,,) graphene film can be synthesized at high temperature through the CVD method. One of the options can be considered depending on the research goals. Due to graphene’s characteristics, the theoretical prices and actual sample prices can vary and the characteristics of graphene powder and graphene film differ as well. As a result, when mixing graphene with other materials, graphene powder may be more appropriate. You would have to perform tests to find the right mixture ratios, but generally, mixing graphene powder with other materials to further manufacture products using molds or presses are possible.

    • I would like to know Graphene Square’s graphene synthesis and transfer process.

      1) Graphene synthesis process by Thermal CVD equipment
      2) PMMA coating
      3) Back side etching (using RIE)
      4) Cu foil etching using APS solution
      5) Rinse using DIW water
      6) Transfer onto substrate, dry by baking on hot plate
      7) Remove PMMA by dipping in Acetone
      8) Quality check (Optical microscope, Raman spectroscope)
      9) Vacuum package, shipping

    • How can I make graphene samples on substrates using dry transfer method?

      For dry transfer, there are two main options: 1) Thermal Release Tape [TRT], 2) Pressure Sensitive Adhesive Film [PSAF]. The common requirement is that both methods require pressure using a laminator.
      1) TRT: apply TRT with level pressure and temperature (100~110℃) simultaneously so that graphene can be released from the base surface of TRT onto the target substrate [based upon long period of experience and know-how, TRT is the suggested option versus PSAF].
      2) PSAF: apply PSAF with level pressure from the base surface of PSAF onto the target substrate.

    • For Stacked graphene, is the transfer process done after PMMA coating of each layer? If not, what is the transfer process for Stacked graphene?

      For multiple layers, we use graphene on Cu foil to initiate and perform overlapping process. The basic process is as follows: take [Graphene/Cu foil] and scoop from underneath [PMMA/Graphene] using DI water bath resulting in [PMMA/Graphene/Graphene/Cu foil]. Afterwards, Cu foil can etched away and the above process can be repeated to make multiple layers of graphene.

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