Material that could change electronics industry is shown to be very mobile in water and likely to cause negative environmental impacts if spilled
In a first-of-its-kind study of how a material some think could transform the electronics industry moves in water, researchers at the University of California, Riverside Bourns College of Engineering found graphene oxide nanoparticles are very mobile in lakes or streams and therefore likely to cause negative environmental impacts if released.
Graphene oxide nanoparticles are an oxidized form of graphene, a single layer of carbon atoms prized for its strength, conductivity and flexibility. Applications for graphene include everything from cell phones and tablet computers to biomedical devices and solar panels.
The use of graphene and other carbon-based nanomaterials, such as carbon nanotubes, are growing rapidly. At the same time, recent studies have suggested graphene oxide may be toxic to humans.
As production of these nanomaterials increase, it is important for regulators, such as the Environmental Protection Agency, to understand their potential environmental impacts, said Jacob D. Lanphere, a UC Riverside graduate student who co-authored a just-published paper about graphene oxide nanoparticles transport in ground and surface water environments.
“The situation today is similar to where we were with chemicals and pharmaceuticals 30 years ago,” Lanphere said. “We just don’t know much about what happens when these engineered nanomaterials get into the ground or water. So we have to be proactive so we have the data available to promote sustainable applications of this technology in the future.”
The paper co-authored by Lanphere, “Stability and Transport of Graphene Oxide Nanoparticles in Groundwater and Surface Water,” was published in a special issue of the journal Environmental Engineering Science.
Other authors were: Sharon L. Walker, an associate professor and the John Babbage Chair in Environmental Engineering at UC Riverside; Brandon Rogers and Corey Luth, both undergraduate students working in Walker’s lab; and Carl H. Bolster, a research hydrologist with the U.S. Department of Agriculture in Bowling Green, Ky.
Walker’s lab is one of only a few in the country studying the environmental impact of graphene oxide. The research that led to the Environmental Engineering Science paper focused on understanding graphene oxide nanoparticles’ stability, or how well they hold together, and movement in groundwater versus surface water.
The researchers found significant differences.
In groundwater, which typically has a higher degree of hardness and a lower concentration of natural organic matter, the graphene oxide nanoparticles tended to become less stable and eventually settle out or be removed in subsurface environments.
In surface waters, where there is more organic material and less hardness, the nanoparticles remained stable and moved farther, especially in the subsurface layers of the water bodies.
The researchers also found that graphene oxide nanoparticles, despite being nearly flat, as opposed to spherical, like many other engineered nanoparticles, follow the same theories of stability and transport.
The Latest on: Graphene
via Google News
The Latest on: Graphene
- New Graphene supercapacitor will boost energy in defence applicationson January 24, 2020 at 8:31 pm
Efforts are being made to look for economical and more effective options for storing electrical energy. Indian researchers are now developing an cost effective Graphene-based supercapacitor that can ...
- Bird droppings to help cut the crap in graphene doping paperson January 24, 2020 at 1:36 am
‘It seems that whatever “crap” we put into graphene, electrocatalysis increases.’ That’s according to Martin Pumera, University of Chemistry and Technology, Prague, Czech Republic, and colleagues, ...
- Global Graphene Market Report 2020-2030: Detailed Forecasts for Key Growth Areas, Opportunities and Demandon January 24, 2020 at 1:08 am
Dublin, Jan. 24, 2020 (GLOBE NEWSWIRE) -- The "The Graphene Report 2020" report has been added to ResearchAndMarkets.com's offering. The market ...
- The morphology of an intercalated Au layer with its effect on the Dirac point of grapheneon January 23, 2020 at 5:12 pm
This is a theoretical investigation where Density Functional Theory (DFT) has been used in studying the phenomenon of Au intercalation within the 4H-SiC/graphene interface. The electronic structure of ...
- Well-designed substrates make large single crystal bi-/tri-layer graphene possibleon January 23, 2020 at 7:15 am
Researchers of the Center for Multidimensional Carbon Materials (CMCM) within the Institute for Basic Science (IBS, South Korea) have reported in Nature Nanotechnology the fabrication and use of ...
- Measurement of Graphene Layer Thickness (image)on January 21, 2020 at 9:30 am
(a) Raman spectra of monolayer, AB-stacked bilayer and ABA-stacked trilayer graphene transferred onto SiO2/Si substrates. The absence of D peak(s) (at 1350 cm-1) demonstrates the high quality of these ...
- Athletes Win with Grays' Field Hockey Sticks Amplified with XG Sciences' Graphene Nanoplateletson January 20, 2020 at 9:59 am
XG Sciences, Inc. a market leader in the design and manufacture of graphene nanoplatelets and advanced materials containing graphene nanoplatelets, announces the innovative use of XG Sciences' ...
- Linking graphene-based material physicochemical properties with molecular adsorption, structure and cell fateon January 20, 2020 at 2:18 am
Graphene, an allotrope of carbon, consists of a single layer of carbon atoms with uniquely tuneable properties. As such, graphene-based materials (GBMs) have gained interest for tissue engineering ...
- Scientific Origami Uses Polymers, Graphene And Even DNAon January 17, 2020 at 4:04 pm
Origami is not just for paper anymore. Researchers are getting creative with different materials to find new scientific applications of origami.
- World Graphene Report 2020: Production, Pricing, Patents & Publications, Key Playerson January 16, 2020 at 4:14 pm
DUBLIN, Jan. 16, 2020 /PRNewswire/ -- The "The Graphene Report 2020" report has been added to ResearchAndMarkets.com's offering. The market for graphene has grown hugely in the past decade, with ...
via Bing News