New Materials Have Been Added to Our Two-Dimensional Material Collection!
Posted on Thu, Dec 22, 2016 by Chris Bracher
Reduced Graphene Oxide
Reduced graphene oxide (rGO), a form of graphene oxide with oxygen-containing groups removed, has recently been added to our collection. The removal of these groups makes the structure of the flakes more similar to pure graphene, significantly improving the electronic properties of the materials whilst retaining some of the solubility of graphene oxide.
We offer rGO synthesised through different reduction methods: chemical and thermal.
Chemically-Reduced Graphene Oxide
Chemically-reduced graphene oxide retains the flake size and layer ratios of graphene oxide, whilst having a low defect density. However, the chemical reduction process retains more oxygen than the thermal reduction process would, resulting in better solubility and poorer electrical properties.
|Flake Size||0.1 - 1 μm||1 - 100 μm|
|Flake Thickness||<1 nm||<1 nm|
Thermally-Reduced Graphene Oxide
Thermally-reduced graphene oxide retains less oxygen groups than chemically-reduced graphene oxide. However, the processing temperatures required result in smaller flake sizes and higher defect densities than chemical reduction would produce. This results in poorer solubility, but better electrical properties.
|Flake Size||0.1 - 1 μm|
|Flake Thickness||<1 nm|
Further information for both of these products, including dispersion guides and technical information, can be found on the reduced graphene oxide product page.
Pre-Made Graphene Oxide Solutions
In addition to reduced graphene oxide, we are also adding pre-made solutions of graphene oxide and nitrogen-doped graphene oxide to our range, both of which will be available in early 2017. Details of these can be found below, as well as on the new and improved graphene oxide and nitrogen-doped graphene oxide product pages.
Graphene Oxide Solutions
|Concentration||5 mg.ml-1||0.5 mg.ml-1||5 mg.ml-1||0.5 mg.ml-1|
|Flake Sizes||1-5 μm||1-5 μm||1-50 μm||1-50 μm|
Nitrogen-Doped Graphene Oxide Solutions
|Concentration||0.5 mg.ml-1||0.05 mg.ml-1|
|Flake Sizes||1-5 μm||1-5 μm|
Author: Chris Bracher
Chris joined Ossila in 2016 after completing a PhD in polymer and perovskite solar cells at the University of Sheffield. During his PhD, he gained expertise in photovoltaic device fabrication and characterisation, thin-film solution processing, and the construction of automated testing systems. Formerly part of the OFET and 2D materials teams at Ossila, he now focuses on the development of new test and measurement systems, with an emphasis on software.