Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > New synthesis method produces nanoparticles in high quantities

Abstract:
TiO2 nanoparticles are in increasingly high demand for a range of applications, including photocatalysts, photonic crystals, photovoltaic cells, gas sensors, fuel cells, pigments and cosmetics. Now researchers in Japan have demonstrated a new method for synthesis of TiO2 nanoparticles in large amounts.

New synthesis method produces nanoparticles in high quantities

Kanazawa, Japan | Posted on February 25th, 2013

Researchers have already used inductively coupled thermal plasmas (ICTPs) as a useful source of heat and chemicals in synthesis. These plasmas are forms of the chemical that have been ionised by energy produced by electric currents produced by fluctuating magnetic fields, so-called electromagnetic induction. However application of ICTPs in nanoparticle synthesis has met with difficulties in controlling the particle size.

Yasunori Tanaka and colleagues at Kanazawa University and Nisshin Seifun Group in Japan had previously modified the ICTP approach using a modulated current coil to give voltage pulses and other arbitrary waveforms. The modulated current provides a means of controlling the temperature and density of the chemical species during synthesis. Applying these pulse-modulated inductive thermal plasmas (PMITP) to TiO2 nanoparticle synthesis allowed control over the particle size and mineral phase. However, due to the latent heat of evaporation of the powders, there was a limit to how much the feed rate could be increased before the ICTP failed to evaporate all the powder.

Now the researchers have demonstrated that carefully timed intermittent feeding combined with gas quenching to synchronise with the pulse modulation of the induction thermal plasmas allowed oxidation of all the titanium into TiO2 nanoparticle even when synthesised in large amounts. They conclude, "The results indicated that the synthesized particles by the 20-kW PMITP with a heavy loading rate of 12.3 g/min had a similar particle size distribution with the mean diameter about 40 nm to those with light loading of 4.2 g/min."

1. Faculty of Electrical and Computer Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
2. Research Center for Production & Technology, Nisshin Seifun Group Inc.,5-3-1 Tsurugaoka, Fujimino 356-8511, Japan

*corresponding author, e-mail address:

####

For more information, please click here

Contacts:
Organization of Frontier Science and Innovation
Kanazawa University
Kakuma, Kanazawa, Ishikawa 920-1192, Japan

Copyright © Kanazawa University

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 Links

Publication and Affiliation

Related News Press

News and information

Raman Whispering Gallery Detects Nanoparticles September 1st, 2014

A new, tunable device for spintronics: An international team of scientists including physicist Jairo Sinova from the University of Mainz realises a tunable spin-charge converter made of GaAs August 29th, 2014

Nanoscale assembly line August 29th, 2014

New Vice President Takes Helm at CNSE CMOST: Catherine Gilbert To Lead CNSE Children’s Museum of Science and Technology Through Expansion And Relocation August 29th, 2014

Sensors

Copper shines as flexible conductor August 29th, 2014

Novel 'butterfly' molecule could build new sensors, photoenergy conversion devices August 28th, 2014

RMIT delivers $30m boost to micro and nano-tech August 26th, 2014

Symphony of nanoplasmonic and optical resonators leads to magnificent laser-like light emission August 26th, 2014

Discoveries

Raman Whispering Gallery Detects Nanoparticles September 1st, 2014

A new, tunable device for spintronics: An international team of scientists including physicist Jairo Sinova from the University of Mainz realises a tunable spin-charge converter made of GaAs August 29th, 2014

Nanoscale assembly line August 29th, 2014

Copper shines as flexible conductor August 29th, 2014

Materials/Metamaterials

Fonon Announces 3D Metal Sintering Technology: Emerging Additive Nano Powder Manufacturing Technology August 28th, 2014

SouthWest NanoTechnologies CEO Dave Arthur to Discuss “Carbon Nanotubes and Automotive Applications” at The Automotive Composites Conference and Expo 2014 (ACCE2014) August 28th, 2014

Nanodiamonds Are Forever: A UCSB professor’s research examines 13,000-year-old nanodiamonds from multiple locations across three continents August 27th, 2014

Competition for Graphene: Berkeley Lab Researchers Demonstrate Ultrafast Charge Transfer in New Family of 2D Semiconductors August 26th, 2014

Announcements

Raman Whispering Gallery Detects Nanoparticles September 1st, 2014

Nanoscale assembly line August 29th, 2014

New analytical technology reveals 'nanomechanical' surface traits August 29th, 2014

New Vice President Takes Helm at CNSE CMOST: Catherine Gilbert To Lead CNSE Children’s Museum of Science and Technology Through Expansion And Relocation August 29th, 2014

Energy

Novel 'butterfly' molecule could build new sensors, photoenergy conversion devices August 28th, 2014

Aspen Aerogels, Inc. to Present at Barclays CEO Energy-Power Conference August 27th, 2014

Competition for Graphene: Berkeley Lab Researchers Demonstrate Ultrafast Charge Transfer in New Family of 2D Semiconductors August 26th, 2014

Chemical reaction yields "tapes" of porphin molecules: Flexible tapes from the nanoworld August 13th, 2014

Personal Care

Sunblock poses potential hazard to sea life August 20th, 2014

AQUANOVA receives Technology Leadership Award 2014 FROST & SULLIVAN honors NovaSOL® Technology again August 12th, 2014

Nanotechnology used in sunscreens: a Mexican achievement May 14th, 2014

Production of Nanocapsule from Sea-Buckthorn Extract in Iran May 3rd, 2014

Fuel Cells

Media Advisory: Minister Rempel to Announce Support for Alberta's Nanotechnology Sector June 20th, 2014

Evolution of a Bimetallic Nanocatalyst June 6th, 2014

University of Surrey collaborates with India and Tata Steel to revolutionise renewable energy March 26th, 2014

Novel membrane reveals water molecules will bounce off a liquid surface: Study may lead to more efficient water-desalination systems, fundamental understanding of fluid flow March 16th, 2014

Photonics/Optics/Lasers

Raman Whispering Gallery Detects Nanoparticles September 1st, 2014

New analytical technology reveals 'nanomechanical' surface traits August 29th, 2014

Fonon Announces 3D Metal Sintering Technology: Emerging Additive Nano Powder Manufacturing Technology August 28th, 2014

Competition for Graphene: Berkeley Lab Researchers Demonstrate Ultrafast Charge Transfer in New Family of 2D Semiconductors August 26th, 2014

Solar/Photovoltaic

Novel 'butterfly' molecule could build new sensors, photoenergy conversion devices August 28th, 2014

Competition for Graphene: Berkeley Lab Researchers Demonstrate Ultrafast Charge Transfer in New Family of 2D Semiconductors August 26th, 2014

Eco-friendly 'pre-fab nanoparticles' could revolutionize nano manufacturing: UMass Amherst team invents a way to create versatile, water-soluble nano-modules August 13th, 2014

An Inkjet-Printed Field-Effect Transistor for Label-Free Biosensing August 11th, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE