Nanotechnology Now





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Graphene and friends: A new method to make 2D materials

http://dx.doi.org/10.1002/anie.201106004|Z. Zeng, Angew. Chem. Int. Ed. ; DOI: 10.1002/anie.201106004
http://dx.doi.org/10.1002/anie.201106004|Z. Zeng, Angew. Chem. Int. Ed. ; DOI: 10.1002/anie.201106004

Abstract:
by Adrian Miller

Although graphene has had materials researcher hearts racing more or less since its discovery, many scientists see it as just the beginning - if other materials could be processed in the same way, they ask, couldn't it mean a revolution in nanodevice design? Imagine a range of two-dimensional materials, each with their own unique thermal, electronic, optical, and mechanical properties, used for a whole host of nanotechnology applications.

Graphene and friends: A new method to make 2D materials

Germany | Posted on November 10th, 2011

The problem with this vision - at least, up until now - is that graphene is the only 2D material that can be reliably and easily synthesized in large enough quantities to be useful for device manufacture. Other compounds, for example MoS2 and WS2, are right up there with graphite in terms of potential, but the groups working on their processing haven't been able to move past small scale methods such as mechanical cleavage ( la Geim and Novoselov) and nanotube "unzipping".

However, that might be about to change - last week, a Singaporean team reported a new process to create large numbers of single-layer nanosheets quickly and efficiently, applicable to any suitable bulk material. By inducing lithiation with an electrochemical setup, the materials can be carefully monitored and put into a state ideal for ultrasonication and exfoliation. In less than six hours, and at room temperatures, their test setup obtained an MoS2 nanosheet yield of 92%.

To demonstrate how useful these sheets could be, the team went on to create a proof-of-concept nitric oxide detector from these single MoS2 layers. As they're electrically conductive over large areas, and act as p-type semiconductors, they respond electronically to different NO concentrations, and the addition of gold electrodes meant that the response could measured. This experimental device showed great promise - a detection limit of 190 ppt, definitely well within the limits for a promising sensing platform.

Other, similar, experiments yielded similar results with WS2, TiS2, and others - even graphene! - and the researchers see their method as one that could be adopted to produce a range of 2D nanosheets, for application in areas such as electronics, catalysis, and sensing.

####

For more information, please click here

Copyright © Wiley-VCH Materials Science Journals

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Surfing a wake of light: Researchers observe and control light wakes for the first time July 6th, 2015

Tel Aviv/Tsinghua University project uses crowd computing to improve water filtration: The research, a product of the new TAU-Tsinghua XIN Center, was conducted by 150,000 volunteers at IBM's World Community Grid July 6th, 2015

Transition from 3 to 2 dimensions increases conduction, MIPT scientists discover July 6th, 2015

A Stretchy Mesh Heater for Sore Muscles July 6th, 2015

BBC World Service to broadcast Forum discussion on graphene July 6th, 2015

Graphene

Transition from 3 to 2 dimensions increases conduction, MIPT scientists discover July 6th, 2015

BBC World Service to broadcast Forum discussion on graphene July 6th, 2015

Graphene flexes its electronic muscles: Rice-led researchers calculate electrical properties of carbon cones, other shapes June 30th, 2015

Chemistry

Groundbreaking research to help control liquids at micro and nano scales July 3rd, 2015

Carnegie Mellon chemists characterize 3-D macroporous hydrogels: Methods will allow researchers to develop new 'smart' materials June 30th, 2015

Visible Light-Sensitive Photocatalysts Used for Purification of Contaminated Water in Iran June 30th, 2015

Chip Technology

Fundamental observation of spin-controlled electrical conduction in metals: Ultrafast terahertz spectroscopy yields direct insight into the building block of modern magnetic memories July 6th, 2015

Transition from 3 to 2 dimensions increases conduction, MIPT scientists discover July 6th, 2015

Nanometrics to Announce Second Quarter Financial Results on July 23, 2015 July 2nd, 2015

The quantum middle man July 2nd, 2015

Sensors

New Biosensor Produced in Iran to Detect Effective Drugs in Cancer Treatment July 4th, 2015

Groundbreaking research to help control liquids at micro and nano scales July 3rd, 2015

New micro-supercapacitor structure inspired by the intricate design of leaves: A team of scientists in Korea has devised a new method for making a graphene film for supercapacitors July 2nd, 2015

Carnegie Mellon chemists characterize 3-D macroporous hydrogels: Methods will allow researchers to develop new 'smart' materials June 30th, 2015

Discoveries

Fundamental observation of spin-controlled electrical conduction in metals: Ultrafast terahertz spectroscopy yields direct insight into the building block of modern magnetic memories July 6th, 2015

Surfing a wake of light: Researchers observe and control light wakes for the first time July 6th, 2015

Transition from 3 to 2 dimensions increases conduction, MIPT scientists discover July 6th, 2015

A Stretchy Mesh Heater for Sore Muscles July 6th, 2015

Announcements

Surfing a wake of light: Researchers observe and control light wakes for the first time July 6th, 2015

Tel Aviv/Tsinghua University project uses crowd computing to improve water filtration: The research, a product of the new TAU-Tsinghua XIN Center, was conducted by 150,000 volunteers at IBM's World Community Grid July 6th, 2015

Transition from 3 to 2 dimensions increases conduction, MIPT scientists discover July 6th, 2015

A Stretchy Mesh Heater for Sore Muscles July 6th, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project