Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

Leti and Taiwanese Tech Organizations Sponsoring Workshop in Taipei on MEMS, IoT, Smart Lighting Applications, System Reliability & Security September 28th, 2016

Dr Barbara Armbruster promoted to Worldwide Sales and Marketing Director for XEI Scientific September 27th, 2016

Fighting cancer with sticky nanoparticles September 27th, 2016

Gold nanoparticles conjugated quercetin inhibits epithelial-mesenchymal transition, angiogenesis and invasiveness via EGFR/VEGFR-2 mediated pathway in breast cancer September 27th, 2016

Sensors

Leti and Taiwanese Tech Organizations Sponsoring Workshop in Taipei on MEMS, IoT, Smart Lighting Applications, System Reliability & Security September 28th, 2016

Researchers at the Catalan Institute of Nanoscience and Nanotechnology show that bending semiconductors generates electricity September 26th, 2016

Chains of nanogold forged with atomic precision September 23rd, 2016

Speedy bacteria detector could help prevent foodborne illnesses September 21st, 2016

Discoveries

Fighting cancer with sticky nanoparticles September 27th, 2016

Gold nanoparticles conjugated quercetin inhibits epithelial-mesenchymal transition, angiogenesis and invasiveness via EGFR/VEGFR-2 mediated pathway in breast cancer September 27th, 2016

UNAM develops successful nano edible coating which increases life food September 27th, 2016

Crystalline Fault Lines Provide Pathway for Solar Cell Current: New tomographic AFM imaging technique reveals that microstructural defects, generally thought to be detrimental, actually improve conductivity in cadmium telluride solar cells September 26th, 2016

Materials/Metamaterials

UNAM develops successful nano edible coating which increases life food September 27th, 2016

Crystalline Fault Lines Provide Pathway for Solar Cell Current: New tomographic AFM imaging technique reveals that microstructural defects, generally thought to be detrimental, actually improve conductivity in cadmium telluride solar cells September 26th, 2016

Chains of nanogold forged with atomic precision September 23rd, 2016

Coffee-infused foam removes lead from contaminated water September 21st, 2016

Announcements

Leti and Taiwanese Tech Organizations Sponsoring Workshop in Taipei on MEMS, IoT, Smart Lighting Applications, System Reliability & Security September 28th, 2016

Oxford Instruments systems now facilitate water purification technology September 27th, 2016

Dr Barbara Armbruster promoted to Worldwide Sales and Marketing Director for XEI Scientific September 27th, 2016

Fighting cancer with sticky nanoparticles September 27th, 2016

Energy

Crystalline Fault Lines Provide Pathway for Solar Cell Current: New tomographic AFM imaging technique reveals that microstructural defects, generally thought to be detrimental, actually improve conductivity in cadmium telluride solar cells September 26th, 2016

Researchers at the Catalan Institute of Nanoscience and Nanotechnology show that bending semiconductors generates electricity September 26th, 2016

Semiconducting inorganic double helix: New flexible semiconductor for electronics, solar technology and photo catalysis September 15th, 2016

New perovskite research discoveries may lead to solar cell, LED advances September 12th, 2016

Personal Care/Cosmetics

Programmable materials find strength in molecular repetition May 23rd, 2016

Common nanoparticle has subtle effects on oxidative stress genes May 11th, 2016

NRL reveals novel uniform coating process of p-ALD April 21st, 2016

New ORNL method could unleash solar power potential March 16th, 2016

Fuel Cells

Carbon-coated iron catalyst structure could lead to more-active fuel cells September 15th, 2016

Imperial College use Kleindiek micromanipulators in their research into electrochemical energy devices September 6th, 2016

Iowa State engineers treat printed graphene with lasers to enable paper electronics September 2nd, 2016

Researchers reduce expensive noble metals for fuel cell reactions August 22nd, 2016

Photonics/Optics/Lasers

Mexican scientist in the Netherlands seeks to achieve data transmission ... speed of light September 20th, 2016

Towards Stable Propagation of Light in Nano-Photonic Fibers September 20th, 2016

PHENOMEN is a FET-Open Research Project aiming to lay the foundations a new information technology September 19th, 2016

NIST Patents Single-Photon Detector for Potential Encryption and Sensing Apps September 16th, 2016

Solar/Photovoltaic

Crystalline Fault Lines Provide Pathway for Solar Cell Current: New tomographic AFM imaging technique reveals that microstructural defects, generally thought to be detrimental, actually improve conductivity in cadmium telluride solar cells September 26th, 2016

Semiconducting inorganic double helix: New flexible semiconductor for electronics, solar technology and photo catalysis September 15th, 2016

New perovskite research discoveries may lead to solar cell, LED advances September 12th, 2016

NREL discovery creates future opportunity in quantum computing: Research into perovskites looks beyond material's usage for efficient solar cells September 9th, 2016

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







Car Brands
Buy website traffic