Special Note
The price of graphene oxide product in the
market today largely depends on the QUALITY of the product. One important
factor to consider for the quality is the pH value of graphene oxide when it is
in the form of dispersion/solution. The preliminary graphene oxide produced by
Hummer method has normally a pH value of from 2 to 3 if no washing step is
involved in the entire production process. The acidic nature
(pH=2-3) of the un-washed grapheme oxide will significantly
deteriorate the results of its applications. Therefore, it is advisable to ask
a vendor about the pH of the graphene oxide before buying it.
Our graphene oxide based products
were obtained after steps of repetitive washing with a
huge amount of distilled water. The final products of our graphene oxide
dispersions are close to neutral, having a pH of about 6-7. Our solid
grapheme oxide products were obtained after washing and drying and have a pH of
about 6-7 when they dissolve into distilled water with the aid of sonication.
Description
Single-layered
graphene oxide (GO), a new exciting graphene-based nanomaterial, has a wide
variety of applications due to its atomic thickness and other excellent
properties. It can be reduced back to graphene chemically or thermally. Its
good dissolvability in water as well as in organic solvents make it easy for
solution processing. The GO production based on a wet chemistry approach is
inexpensive and can be on a large scale. The listed GO product is SOLID and was
prepared professionally by an improved Hummer method. The product can be used to
prepare surfactant-free dispersions of single-layered GO in various media such as water, methanol, DMF, NMP, etc, by simply
dispersing the solid product in the media, with the aid of
ultrasound.
Specifications
Color: brown to dark brown to black;
pH: 6-7 (when dissolved in distilled water);
Purity: ~ 99%;
Single layer ratio: > 99%;
Dimension determined by atomic force microscopy (AFM): several tens of
nanometers to several micrometers in XY plane, 0.7-1.2 nm Z direction (thickness);
and
C/O ratio: ~ 2.3. Well
oxidized graphene oxide would have a carbon to oxygen atomic ratio lying between
2.1 and 2.9.
Application Areas
precursor for graphene preparation; transparent
conductive films/coatings; solar energy; graphene nanoelectronics;
supercapacitors; graphene oxide paper; biosensing material; drug delivery
carrier; and many more.
Note
to Customers
1) Packages with other amounts of single-layered GO are
available. If you need even larger amount (e.g., > 10 gram) of the
product, please feel free to contact us. We accept bulk orders.
2) We offer FREE USPS Ground Advantage shipping for ALL orders
within the United States. Tracking numbers are available for all national
and international shipping. We ship items out quickly, generally within 24
hours after receiving a payment, if not sooner.
3) The "Best Offer" button is only for
buying 2 or more items please. If you would like only one item, please
use the "Buy it Now" button. Thank you!
4) We are commit to providing high quality graphene-based
products with very competitive prices. We appreciate very
much if you could leave us a positive feedback on ebay after
you receive your item in the condition you expected. Feedbacks are our
essential tool to build up a trustful seller reputation on eBay community.
However, if there is a problem, please send us a message; we
promise that we will try to do our best to resolve your issue smoothly to
deserve your positive feedback.
5) For International Buyers:
a) We use ebay International Shipping or the United State Postal
Service (USPS) for international shippings. For USPS details, see https://www.usps.com/international/
b) International buyers are responsible for any customs
charges such as duties and taxes that might apply.
c) Buyers are encouraged to choose USPS Priority Mail
International service. Buyers are responsible for potential loss of the package
with a NON-priority USPS service chosen by the buyers.
A Short List of Research Citations of Our
Goographene Products (as of the year 2023)
Peer-Reviewed Publications
Zhao et al., "Printed carbon nanotube-based humidity
sensors deployable on surfaces of widely varying curvatures", ACS Appl.
Nano Mater., 2023, 6, 1459-1474.
Kashem et al., "Spin-spray-assisted layer-by-layer assembly
of thick polymer films with self-healing, UV-protection, and anti-fog
properties", J. Polym. Sci., 2023, 61(11), 1040-1051. Inside Cover. DOI:
10.1002/pol.20220481
Tarekegn et al., "Poly(3-hexylthiophene)-based organic
thin-film transistors with virgin graphene oxide as an interfacial layer",
Polymers, 2022, 14, 5061.
Seyedi et al., “Toward mechanical recycling of
polystyrene/polypropylene blends with bottlebrush-modified graphene oxide as a
compatibilizer”, ACS Appl. Mater. Interfaces, 2022, 14, 30, 35074-35086.
Javanbakht et al., “Rheological and physical properties of a nanocomposite of
graphene oxide nanoribbons with polyvinyl alcohol”, Journal of Thermoplastic
Composite Materials, 2022, 35(5), 651-664.
Barkley et al., “Smart electromagnetic thermites: GO/rGO nanoscale thermite
composites with thermally switchable microwave ignitability”, ACS Appl. Mater.
Interfaces, 2021, 13, 33, 39678-39688.
Regis et al., “Near-UV light assisted green reduction of graphene oxide films
through l-ascorbic acid”, International Journal of Smart and Nano Materials”,
2021, 12:1, 20-35, DOI: 10.1080/19475411.2021.1887396.
Zhao et al., “Ultrathin and ultrasensitive printed carbon nanotube-based
temperature sensors capable of repeated uses on surfaces of widely varying
curvatures and wettabilities”, ACS Appl. Mater. Interfaces, 2021, 13, 8,
10257-10270.
Mohammadi et al., “Graphene oxide membranes for isotopic water mixture
filtration: preparation, physicochemical characterization, and performance
assessment”, ACS Appl. Mater. Interfaces, 2020, 12, 31, 34736-34745.
Yafia et al., “Low-cost graphene-based digital microfluidic system”,
Micromachines, 2020, 11, 880; doi: 10.3390/mi11090880.
Gonzalez-Rodriguez et al., “Multifunctional graphene oxide/iron oxide
nanoparticles for magnetic targeted drug delivery dual magnetic
resonance/fluorescence imaging and cancer sensing”, PLoS One, 2019; 14(6):
e0217072. Published online 2019 Jun 6. doi: 10.1371/journal.pone.0217072.
Al-Naddaf et al., “MOF-GO hybrid nanocomposite adsorbents for methane
storage", Industrial & Engineering Chemistry Research, 2018, 57, 51,
17470-17479.
Amun Amri et al., “Composites of palm oil fuel ash (POFA) based geopolymer and
graphene oxide: structural and compressive strength”, IOP Conf. Ser.: Mater.
Sci. Eng., 2018, 420, 012063. doi:10.1088/1757-899X/420/1/012063
Joung et al., “Fabrication of Three-Dimensional Graphene-Based Polyhedrons via
Origami-Like Self-Folding”, Journal of Visualized Experiments, 2018(139). URL:
https://www.jove.com/video/58500 DOI: 10.3791/58500.
Hasan et al., “Optical Band Gap Alteration of Graphene Oxide via Ozone Treatment”,
Scientific Reports, 2017, 7, 6411. DOI: 10.1038/s41598-017-06107-0.
Kuanyshbekov T.K et al., “Investigation of Temperature influence on the Process
of Reduction of Graphene Oxide”, Recent Contributions to Physics, 2017, 2(61),
p18-23.
Patents
“Compositions and methods for wound treatment”, invented by Daniel D.
Holsworth, US11291730 B2, patented on April 5, 2022.
“Compositions and methods for wound treatment”, invented by Daniel D.
Holsworth, US11369685B2, patented on June 28, 2022.
Dissertations & Theses
“Graphene Oxide-Thermoplastic Nanocomposites: Fabrication and Properties”, by
Seyedeh Mastooreh Seyedi Ghezghapan, Doctor of Philosophy in Materials Science
and Engineering, Clemson University, 2022.
“Material Synthesis and Additive Manufacturing of Ceramics”, by Elsa
Bramasco-Rivera, Master’s Program in Mechanical Engineering, The University of
Texas at El Paso, 2022, 49 pages.
“A study of the layer-by-layer films with properties of self-healing and
UV-protection”, a thesis of Master of Science in Chemical Engineering by Xu
Liu, Texas Tech University, 2020, 64 pages.
“Removing heavy metals from wastewater using graphene oxide”, a thesis of
Master of in Environmental Engineering, Mid Sweden University, 2020, 30 pages.
“Researching the properties of functionalized few-layer graphene
nanostructures”, Dissertation for the Ph.D. in Material science, by
Kuanyshbekov Tilek Kuanyshbekuly, Al-farabikazakh National University, 2019,
100 pages.
“Additive manufacturing of energy harvesting material system for active
wireless MEMS”, Master degree thesis in Mechanical Engineering by Victor
Fernando Elicerio, University of Texas at El Paso, 2018, 93 pages.
“Characterization and modification of optical properties of graphene oxide and
reduced graphene oxide”, Master degree of Science, Texas Christian University,
2018, 89 pages.
“Optimizing graphene oxide reduction via laser irradiation”, Master degree
thesis in Science of Physics by Austin Patrick Osenga, East Carolina
University, 2016, 60 pages.
“Investigating solid-state supercapacitors constructed with PVA/CNT
nanocomposite electrolytes”, a thesis of Master of Science in Mechanical
Engineering, by Temmuz Coskun, Wichita State University, 2014, 92 pages.
Research Reports
“Electrochemical mineralization of perfluorooctanoic acid”, by Mei Sun and
Vivek Francis Pulikkal, NC Water Resources Research Institute, University of
North Carolina at Charlotte, August 2019.
Our Customers (as of the year 2019)
Our sale has been on since 2012. We are proud that our customers span a vast number
(>2000) of prestigious academic organizations (listed below), companies and
interested individuals all over the world.
A short list of academic organizations
(in random order):
Cornell University
Lawrence Berkeley National Laboratory
University of Maryland
University of Minnesota
National University of Singapore
Harvard University
Iowa State University
Florida International University
Texas Christian University
The University of Texas at El Paso
University of London
University of Nevada
University of Miami
Mercer University
California Institute of Technology
George Mason University
University of California San Diego
Saxion University of Applied Science (Netherlands)
Mid Sweden University (Sweden)
Queens University (Canada)
University of California, Berkeley
Clemson University
St. Cloud State University
University of South Carolina
Brown University
and
many more.