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796034

Sigma-Aldrich

Graphenoxid

powder, 15-20 sheets, 4-10% edge-oxidized, avg. no. of layers, 15 ‑ 20

Synonym(e):

graphite oxide

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About This Item

Lineare Formel:
CxOyHz
UNSPSC-Code:
12352103
PubChem Substanz-ID:
329768525
NACRES:
NA.23

€ 175,00

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Qualitätsniveau

100

Form

powder

Leistungsmerkmale

avg. no. of layers 15 ‑ 20

Löslichkeit

water: dispersible (polar solvents)

Schüttdichte

~1.8 g/cm3

SMILES String

O=C(O)C1C2=C3C4=C5C6=C7C8=C9C%10=C%11C(C%12=C%13C%10=C%14C8=C%15C6=C%16C4=C%17C2=CC(C(O)=O)C%18=C%17C%19=C%16C%20=C%15C%21=C%14C%22=C%13C(C%23=C%24C%22=C%25C%21=C%26C%20=C%27C%19=C%28C%18=CC(C(O)=O)C%29=C%28C%30=C%27C%31=C%26C%32=C%25C%33=C%24C(C%34=C%35C

InChI

1S/C140H42O20/c141-131(142)26-13-23-15-44-62(140(159)160)45-16-24-14-40-31(132(143)144)5-1-29-41-20-48(135(149)150)56-33-7-3-28-27-2-6-32-55-37(133(145)146)11-9-35-60(138(155)156)42-17-25-18-43-61(139(157)158)36-10-12-38(134(147)148)58-46-21-50(137(153)154)59-47-22-49(136(151)152)57-34-8-4-30-39(19-26)51(23)78-72(44)88-75(45)80-52(24)79(54(29)40)95-71(41)83(56)101-93-69(33)64(28)91-90-63(27)68(32)92-86(66(35)55)73(42)81-53(25)82-74(43)87(67(36)58)96-76(46)85(59)103-97-77(47)84(57)102-94-70(34)65(30)89(78)105-104(88)115-98(80)111(95)116(101)126-122-110(93)107(91)120-119-106(90)108(92)99(81)114-100(82)112(96)118(103)128(124(114)119)123-113(97)117(102)127(130(122)129(120)123)121(109(94)105)125(115)126/h2,5,7-10,12-22,26,38,48-50H,1,3-4,6,11H2,(H,141,142)(H,143,144)(H,145,146)(H,147,148)(H,149,150)(H,151,152)(H,153,154)(H,155,156)(H,157,158)(H,159,160)

InChIKey

VTWITIAIMADGRM-UHFFFAOYSA-N

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Allgemeine Beschreibung

  • Form: Braunes/schwarzes Pulver
  • Schüttdichte: ~1,8 g/cm³
  • Löslichkeit: In Wasser und polaren Lösungsmitteln dispergierbar
  • Anzahl an Schichten: 15-20
  • Oxidation: 4–10 %
Das Material besteht aus gespalteten Graphen-Nanoplättchen, die organische funktionelle Gruppen enthalten. Der Sauerstoffanteil liegt bei weniger als 5 % und dank der hohen Anzahl an Hydroxylgruppen (OH) entstehen weitere chemische Modifikationen, die neue Funktionen hinzufügen. Mit dem Ansatz der Funktionalisierung haften die meisten Gruppen am Rand der Schichten, um die intrinsischen Eigenschaften von Graphen (z. B. die elektrische Leitfähigkeit) zu erhalten.

Anwendung

Das Pulver dient zur Dispersion und ist sowohl in polaren Lösungsmitteln (z. B. Wasser, THF und DMF) als auch in polaren Polymer-Matrixverbindungen (z. B. PLA, PA und PET) enthalten. Es eignet sich für die In-situ-Polymerisation, zum direkten Mischen und Formen von Harz, zur Auflösung von Lösungsmitteln sowie für Extrusionsverfahren. Mögliche Anwendungen sind u. a.:
  • Nanoverbundstoffe [1,2]
  • Antikorrosionsbeschichtungen [3,4]
  • Barrierefolien [5,6]
  • Membranen zur Trennung [7,8]
  • Elektrisch leitfähige Farben [9,10]
  • Energiespeicher [11,12]

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
0000351899
MKCW1866
MKCV8984
0000351899
0000270747

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In der Dokumentenbibliothek finden Sie die Dokumentation zu den Produkten, die Sie kürzlich erworben haben.

Die Dokumentenbibliothek aufrufen

Beatriz Salesa et al.
Nanomaterials (Basel, Switzerland), 10(2) (2020-01-30)
Alginate-based materials hold great promise in bioengineering applications such as skin wound healing and scaffolds for tissue engineering. Nevertheless, cell adhesion of mammalian cells on these hydrophilic materials is very poor. In cases such as polycaprolactone, poly(hydroxy-3-butyrate-co-3-valerate) and gelatin, the
M M Abdel-Mottaleb et al.
Journal of the mechanical behavior of biomedical materials, 96, 118-124 (2019-04-30)
In this work, Polyacrylonitrile nanofibers were enhanced by graphene oxide and zinc oxide, in terms of enhanced the photocatalytic activity and mechanical properties for the composite nanofibers. Photocatalytic degradation of two organic dyes methylene blue dye and indigo carmine dye
Transport properties of zigzag graphene nanoribbons with oxygen edge decoration
Zhang CX, et al.
Organic Electronics, 13(11), 2494- 2501 (2012)
Belén Frígols et al.
PloS one, 14(3), e0212819-e0212819 (2019-03-08)
Alginate is considered an exceptional biomaterial due to its hydrophilicity, biocompatibility, biodegradability, nontoxicity and low-cost in comparison with other biopolymers. We have recently demonstrated that the incorporation of 1% graphene oxide (GO) into alginate films crosslinked with Ca2+ cations provides
Farzaneh Besharat et al.
Nanotechnology, 31(15), 155701-155701 (2019-12-21)
In recent years, in order to obtain improved mechanical, thermal, electrical and barrier/transport properties, aligned carbonaceous nanomaterials/polymer nanocomposite films have been receiving growing attention. Correspondingly, the edge oxidized graphene oxide (EOGO) nanoplatelets alignment influence on the structure of the polyethersulfone
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Questions

1–9 of 9 Questions  

  1. Can I get information about the interlayer distance of this product?

    1 answer

    1. This product is not tested for interlayer distance during the quality control process.

      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. 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?

  4. Could you provide TGA results of these GO? I need a high thermal stability GO like 300-400 stable.

    1 answer

    1. Unfortunately, thermogravimetric analysis (TGA) is not performed on this material. The decomposition temperature has not been established. Please see the link below to review an article which suggests that, in general, graphene oxide has a decomposition range by TGA from approximately 125 - 200°C.
      https://www.sciencedirect.com/science/article/pii/S2667056923000068#:~:text=Based%20on%20the%20TGA%20and,decomposition%20of%20GO's%20surface%20functionalities.

      Helpful?

  5. How can graphene oxide (P/N: 796034) be homogenized in a PBS solution?

    1 answer

    1. The product 796034 is edge functionalized graphene. One method to homogenize it is to use a regular lab ultrasonic bath. The appropriate sonication time depends on the machine power, typically around 15-20 minutes for a 100 Watts ultrasonic bath. If the dispersion is not as expected, the sonication process can be repeated.

      Another alternative is to use a homogenizer/cell crasher. A homogenizer with 400-600 Watts is recommended, and it's suggested to set the homogenizer to sonicate for 3 seconds and then pause for 1.5 or 2 seconds, with a total sonication time of 15-20 minutes. Similarly, if the powder is not fully dissolved, the experiment may be repeated.

      Helpful?

  6. What is the particle size of this product (796034, Graphene oxide)? Is it a nanoparticle?

    1 answer

    1. While particle size is not an assigned specification for this product, an estimate is provided below:
      d90 - 14.6 μm
      d50 - 4.2 μm
      d10 - 1.2 μm

      Helpful?

  7. May I get the step-by-step procedure including the materials used to synthesize this product graphene oxide (796034)?

    1 answer

    1. This is an MQ100 quality level product, this information is considered proprietary. All of the shareable documentation is on the product page or the documentation linked to on the product page. Synthetic and preparative details are proprietary.

      Helpful?

  8. Dear Sir/Madam, I am loohking for the thermophysical properties of Graphene Oxided product number 796034. Brand : Aldrich regards Adel

    1 answer

    1. Unfortunately the thermophysical properties have not been tested for this product.

      Helpful?

  9. Do you have data on the diffuse reflectance spectra of eo-GO (796034)?

    1 answer

    1. Unfortunately, reflectance spectra is not provided with this product.

      Helpful?

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