1 Vial, 500 Milligram/Vial, Single-Layer Graphene Oxide, Solid

Description

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 large 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 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.
www.goographene.com
Specifications
Color:
brown to dark brown to black;
pH:
6-7;
Purity:
~ 99%;
Single layer ratio:
~99%;
Dimension by AFM:
several hundreds nanometers in XY plane, up to several micrometers; 0.7-1.2 nm in thickness.
Well oxidized graphene oxide will have
a
carbon to oxygen atomic ratio lying between 2.1 and 2.9. Ours is about 2.3.
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.
— PLEASE NOTE
—
1) Packages with smaller or larger amounts of single-layered GO are available (e.g., 100, 300, 1000 milligram/vial).
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 STANDARD SHIPPING for ALL ORDERS within United States.
Tracking numbers are available for all national and international shippings
.
We ship items out quickly:
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 commited 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
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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) First-Class Package International Service: Varies by destination - tracking number available;
b) USPS Priority Mail International Small Flat Rate Box: 6 - 10 business days - tracking number available;
c) If you need other FASTER innternational mail services, please visit
https://www.usps.com/ship/compare-international-services.htm
for more information and contact the seller before you place an order;
d) International b
uyers are responsible for
any customs charges such as duties and taxes
that
MAY
apply.
— THANK YOU! —