Potential Environmental Risks of Graphene Oxide

  • Author: Veronika Belusa
  • Published: 03 March 2015
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Environmental Science & Technology/ACS Publications
  • Associated Societies: American Chemical Society (ACS), USA
thumbnail image: Potential Environmental Risks of Graphene Oxide

Graphene oxide (GO), a yellow solid, is an important precursor to graphene and has many promising characteristics itself. Wen-Che Hou and Richard G. Zepp, U.S. Environmental Protection Agency, Athens, GA, USA, and colleagues have investigated how GO (pictured) reacts under environmentally relevant sunlight conditions.


The researchers found that the oxide first undergoes a fast photoreaction, where GO disproportionates to fragmented photoproducts similar to reduced GO (rGO), low molecular-weight polycyclic aromatic hydrocarbon species, and CO2. The resulting rGO species are considerably less photoreactive and persist even after exposure equivalent to two months of natural sunlight.


The persistent photoproducts potentially have eco-toxicological effects distinct from those of GO. They might accumulate in the environment and likely could only be removed by environmental processes other than direct photolysis.


 

Article Views: 2169

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

1 Comments

Demin Liu wrote:

Good article.

Good article.

Sun Mar 08 00:43:12 UTC 2015

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH