You are here

U of Maryland team creates GO-based 3D printed micro-scale heating elements

Jun 01, 2016

Researchers at the University of Maryland have developed a method to 3D print heating elements. The created heating elements could be very small and at the same time they can create high temperatures.

Heating GO elements for 3d printing

Heating elements may have various uses, like ones for chemical reactions that often need some sort of heating to work. For this purpose it was common to use a laser to create high temperatures at a small scale, but it is very expensive and doesn’t provide a consistent temperature. This is why researchers decided to develop a new technique to 3D print very small heating elements.

Coronene suggested as a useful method to study graphene oxide

May 19, 2016

Researchers from Brazil suggest a new way to study the changes generated by oxygenated groups in Graphene Oxide using Coronene as a model molecule.

Coronene image

The researcher ran several experiments and measurements on a series of functionalized coronene molecules, and say that these results provide useful data for the analysis of IR and Raman spectra of GO. The researcher say that the Coronene could provide a useful model to study GO features.

Graphene 3D Lab introduces a new class of graphene materials with exceptional oil absorbance properties

May 17, 2016

Graphene 3D Labs logoGraphene 3D Lab has announced a new class of graphene materials with exceptional oil absorbance properties. The Company has commissioned a new production reactor that results in a 5-fold increase in the production capabilities of Graphene Oxide and Reduced Graphene Oxide; Using this extended capacity, the Company produced a new class of materials: Graphene Oxide and Reduced Graphene Oxide Foams. These foams are in the class of ultralight materials and have density of approximately 20 mg/cm 3 , which is only about 17 times heavier than air.

These new materials are able to hold up to 3,500%-8,000% of their own weight of organic solvents and oils, all while being unaffected by water. This attribute could be significant in minimizing the damage caused by oil spills. Due to its high oil absorption capacity, these porous solid state foams are an excellent solution for fast and effective oil clean-up. In addition, they may also have commercial application in energy storage devices, chemical catalysts and ultrasensitive sensors.

Graphene oxide can 'buffer' synapses, could be used to treat epilepsy

May 11, 2016

A study coordinated by the International School for Advanced Studies in Trieste (SISSA) and the University of Trieste examines how effective graphene oxide flakes are at interfering with excitatory synapses, which could prove useful in new treatments for diseases like epilepsy.

Researchers at the University of Manchester and the University of Castilla -la Mancha have also taken part in this work, that may have discovered a new approach to modulating synapses using graphene oxide. The method uses graphene nano-ribbons (flakes) which buffer activity of synapses simply by being present. The researchers administered aqueous solutions of graphene flakes to cultured neurons in 'chronic' exposure conditions, repeating the operation every day for a week. Analyzing functional neuronal electrical activity, they then traced the effect on synapses.

Graphene oxide device assists in monitoring cancer treatments

Apr 28, 2016

Researchers at the University of Michigan developed a graphene oxide-based device that could provide a non-invasive way to monitor the progress of an advanced cancer treatment. The device is able to capture cancer cells out of a blood sample and let them go later, enabling further tests that can show whether the therapy is successfully eliminating the most dangerous cancer cells.

GO-based device helps cancer tests image

The scientists explain that cells released into the bloodstream by tumors could be used to monitor cancer treatment, but they are very difficult to capture, accounting for roughly one in a billion cells. In their quest to develop technologies for capturing such cells from blood samples, they researchers designed devices that trapped the cells on chips made with graphene oxide, but all analysis had to be done on the chip because the cells were firmly adhered. However, it was found important to study cells individually, and this new device makes this possible.

Graphene 3D Lab reports new reactor to expand its graphene production capability

Apr 19, 2016

Graphene 3D Labs logoGraphene 3D Lab has announced the commencement of a new production reactor that results in a 5-fold increase of production capabilities of Graphene Oxide and Reduced Graphene Oxide.

According to G3L, the necessity of expanding production volume for these materials is driven by increased demand as well as by the internal consumption of the Company's Industrial Materials division. G3L stated that it is committed to staying on track to satisfy the increasing materials demand. said

Garmor announces electrically conductive composite for use in energy storage and electronic applications

Apr 13, 2016

Garmor logoGarmor, a graphene technology provider and developer of advanced customer-driven applications, has developed graphene-based composites ideal for high-volume electronic and energy storage applications. By leveraging inexpensive manufacturing methods to produce few-layer graphene oxide (GO) along with innovative composite compression molding processes, Garmor produced compression-moldable GO-composites that can be shaped and stamped into almost any form factor. Garmor is currently establishing strategic business relationships to deploy this technological advancement in applications focused on energy production and storage.

These composites exhibit nearly isotropic electrical conductivity exceeding 1,000 S/cm delivering a unique, omnidirectional conductive substrate. Equally impressive is that these GO-enhanced materials include a polymeric resin that is inherently chemically resistant and allows for increased lifetime even in harsh operating environments.

Graphene oxide to enable microbots that strip lead from water

Apr 12, 2016

Researchers at the Max-Planck Institute for Intelligent Systems and Nanyang Technological University reported graphene oxide-based microbots (GOx-microbots) that can clean up toxic heavy metals in contaminated water. Tests showed around 95% of lead recovery within in an hour, and these findings may result in reducing the introduction of additional contaminants during water cleaning attempts, and salvaging lead for recycling.

GO microbots for cleaning water image

The scientists state that these microbots are more efficient than their predecessors and remove lead 10 times more efficiently than nonmotile GOx-microbots, cleaning water from 1000 ppb down to below 50 ppb in 60 min. The microbots are built on nanosized multilayers of graphene oxide, nickel, and platinum. Researchers say the bots' graphene oxide outer coat captures suspended lead, the inner platinum layer decomposes hydrogen peroxide for self-propulsion, and the middle nickle band allows the machines to be magnetically retrieved from the water. In addition, the autonomous machines can be reused as soon as lead is chemically separated.

Graphene oxide nanoscrolls to benefit water treatment techniques

Apr 12, 2016

Researchers at MIT and Harvard University fabricated nanoscrolls made from graphene oxide flakes for water purification applications, at a much lower cost than that of graphene membranes. The team was able to control the dimensions of each nanoscroll, using both low- and high-frequency ultrasonic techniques.

Graphene oxide nanoscrolls for water treatment image

The researchers say that these nanoscrolls could also be used as ultralight chemical sensors, drug delivery vehicles, and hydrogen storage platforms, in addition to water filters. Also, the ability to tune the dimensions of these architectures may open a window to industry, in combination with the more affordable production costs.

A graphene-based catalyst to improve the production of key chemical

Apr 11, 2016

A team of researchers at Brown University developed a composite catalyst using nitrogen-rich graphene dotted with copper nanoparticles. It was shown in a study that the new catalyst is able to efficiently and selectively convert carbon dioxide to ethylene, one of the world's most important commodity chemicals that is used to make plastics, construction materials and other products.

Chemical companies produce ethylene by the millions of tons each year using processes that usually involve fossil fuels. If excess carbon dioxide can indeed be used to make ethylene, like the results of this study imply, it could help make the chemical industry become more sustainable and eco-friendly. There is, however, much more work to be done before bringing such a process to an industrial scale.