Featured Research

from universities, journals, and other organizations

Optimizing nanoparticles for commercial applications

Date:
April 28, 2013
Source:
National Institute for Materials Science
Summary:
Nanoparticles are used in many commercial products catalysts to cosmetics. A review describes recent work on the three main nanoparticles used in photocatalytics, UV-blocking and sunscreens.

Schematic illustration in the main processing steps involved in the formation of transparent coatings containing oxide nanoparticles.
Credit: Copyright L. Bergstrφm

Nanoparticles are used in many commercial products catalysts to cosmetics. A review published today in the Science and Technology of Advanced Materials by researchers in Sweden and Spain describes recent work on the 3 main nanoparticles used in photocatalytic, UV-blocking and sunscreens.

Nanoparticles are currently used in commercial products ranging from catalysts, polishing media and magnetic fluids to cosmetics and sunscreens. A new review by researchers in Sweden and Spain describes recent work to optimize the synthesis, dispersion and surface functionalization of titania, zinc oxide and ceria -- the three main nanoparticles used in photocatalytic, UV-blocking and sunscreen applications.

With the commercial success of self-cleaning glass in the window frames of high-rise buildings, there is growing interest in applying photocatalytic, self-cleaning titania coatings on building facades and other construction materials. These coatings not only can keep building surfaces clean but also reduce concentrations of harmful airborne pollutants. The antibacterial properties of photocatalytic coatings also offer a means of managing persistent bacteria, mainly in hospitals.

Transparent UV-absorbing or UV-blocking coatings currently have two main applications: as a UV-protecting lacquer for wooden surfaces, and as a UV-barrier coating deposited on the surface of polymer-based products or devices to slow down their deterioration.

Published in the journal, Science and Technology of Advanced Materials, this study describes the structural and chemical requirements as well as the various routes for producing transparent photocatalytic and nanoparticle-based UV-blocking coatings and sunscreens. The authors review the main methods for synthesizing titania, zinc oxide and ceria nanoparticles, with a focus on recent research on the generation of non-agglomerated powders. (Agglomeration is often the major cause of poor performance and limited transparency.) The authors also identify organic additives that are efficient dispersants and can improve the compatibility of inorganic nanoparticles with an organic matrix.

In addition to discussing the technical performance of nanoparticles, the authors address concerns related to distributing them in the environment. They conclude by describing future prospects for nanoparticles and identifying promising materials, such as multifunctional coatings and hybrid films.


Story Source:

The above story is based on materials provided by National Institute for Materials Science. Note: Materials may be edited for content and length.


Journal Reference:

  1. Bertrand Faure, German Salazar-Alvarez, Anwar Ahniyaz, Irune Villaluenga, Gemma Berriozabal, Yolanda R De Miguel, Lennart Bergstrφm. Dispersion and surface functionalization of oxide nanoparticles for transparent photocatalytic and UV-protecting coatings and sunscreens. Science and Technology of Advanced Materials, 2013; 14 (2): 023001 DOI: 10.1088/1468-6996/14/2/023001

Cite This Page:

National Institute for Materials Science. "Optimizing nanoparticles for commercial applications." ScienceDaily. ScienceDaily, 28 April 2013. <www.sciencedaily.com/releases/2013/04/130428144955.htm>.
National Institute for Materials Science. (2013, April 28). Optimizing nanoparticles for commercial applications. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2013/04/130428144955.htm
National Institute for Materials Science. "Optimizing nanoparticles for commercial applications." ScienceDaily. www.sciencedaily.com/releases/2013/04/130428144955.htm (accessed October 20, 2014).

Share This



More Matter & Energy News

Monday, October 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Gulfstream G500, G600 Unveiling

Gulfstream G500, G600 Unveiling

Flying (Oct. 20, 2014) — Watch Gulfstream's public launch of the G500 and G600 at their headquarters in Savannah, Ga., along with a surprise unveiling of the G500, which taxied up under its own power. Video provided by Flying
Powered by NewsLook.com
Japanese Scientists Unveil Floating 3D Projection

Japanese Scientists Unveil Floating 3D Projection

Reuters - Innovations Video Online (Oct. 20, 2014) — Scientists in Tokyo have demonstrated what they say is the world's first 3D projection that floats in mid air. A laser that fires a pulse up to a thousand times a second superheats molecules in the air, creating a spark which can be guided to certain points in the air to shape what the human eye perceives as an image. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-Fuel Impala

Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-Fuel Impala

3BL Media (Oct. 20, 2014) — Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-fuel Impala Video provided by 3BL
Powered by NewsLook.com
What We Know About Microsoft's Rumored Smartwatch

What We Know About Microsoft's Rumored Smartwatch

Newsy (Oct. 20, 2014) — Microsoft will reportedly release a smartwatch that works across different mobile platforms, has a two-day battery life and tracks heart rate. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins