Navigation Links
Titanium dioxide nanoreactor
Date:2/21/2013

This press release is available in German.

Now, Dr. Katja Henzler and a team of chemists at the Helmholtz Centre Berlin have developed a synthesis to produce nanoparticles at room temperature in a polymer network. Their analysis, conducted at BESSY II, Berlin's synchrotron radiation source, has revealed the crystalline structure of the nanoparticles. This represents a major step forward in the usage of polymeric nanoreactors since, until recently, the nanoparticles had to be thoroughly heated to get them to crystallize. The last synthesis step can be spared due to the special environment inside the PNIPAM network.

The Henzler team's polymeric nanoreactors consist of a polystyrene core surrounded by a network of PNIPAM chains. A titanium compound was added to an ethanolic solution of the polymer colloids, which did trigger the formation of small titanium dioxide particles within the PNIPAM network. The BESSY II experiments showed that the chemists were able to control the speed of these processes while at the same time affecting the quality of the nanocrystals that had formed.

Using the novel combination of x-ray microscopy and spectroscopy (NEXAFS-TXM, U41-SGM) at BESSY II, Henzler and the microscopy team were able to show that the nanoparticles are homogeneously distributed over the polymeric nanoreactors. The researchers examined their samples in a cryogenic aqueous environment, which prevents artifact formation due to sample drying. Their analysis showed that the nanoparticles have a crystalline structure. "The nanocrystals have a tetragonal anatase structure and this crystalline structure is a key to their catalytic performance.

Additionally, our new analytic method allows us to control the quality of the synthesized particles so that we can optimize them for relevant applications," says Katja Henzler.


'/>"/>

Contact: Katja Henzler
katja.henzler@helmholtz-berlin.de
49-030-806-243-198
Helmholtz Association of German Research Centres
Source:Eurekalert  

Page: 1

Related biology technology :

1. New Data Shows GeNO LLC Nitric Oxide Delivery System Provided Nitric Oxide With Low Levels of Nitrogen Dioxide for Heart Transplant Patient Evaluation
2. From lemons to lemonade: Using carbon dioxide to make carbon nitride
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Titanium dioxide nanoreactor
(Date:4/20/2017)... ... ... NetDimensions appoints Bill Mastin, a learning technology veteran, as its new Senior Vice ... technologies industry, Mastin joins NetDimensions from the New York office of learning and engagement ... served as SVP of the North America offices and prior to that, he held ...
(Date:4/20/2017)... ... April 20, 2017 , ... Energetiq Technology ... announced today that Chief Executive Officer (CEO) Debbie Gustafson has been appointed to ... global industry association connecting the electronics manufacturing supply chain. The mission of the ...
(Date:4/20/2017)... ... April 20, 2017 , ... Open Therapeutics and the ... sharing and commercialization model. , The Center for Advancing Innovation helps institutions maximize ... effort is bringing the IP to the attention of the entrepreneurial community and ...
(Date:4/20/2017)... Israel , April 20, 2017  BrainStorm ... stem cell technologies for neurodegenerative diseases, announced today that ... Alliance for Regenerative Medicine,s (ARM) 5 th Annual Cell ... at 09:40 EDT in Boston . ... Chief Medical Officer & Chief Operating Officer, will participate in ...
Breaking Biology Technology:
(Date:3/22/2017)... Calif. , March 21, 2017 ... analytics company serving law enforcement agencies, announced today the ... as director of public safety business development. ... diversified law enforcement experience, including a focus on the ... In his most recent position, Mr. Sheridan served as ...
(Date:3/16/2017)... Germany , March 16, 2017 CeBIT 2017 - Against identity ... Continue Reading ... Used combined in one project, multi-biometric solutions provide ... Used ... Systems) ...
(Date:3/9/2017)... FRANCISCO and MOUNTAIN VIEW, Calif. ... , "Eating Well Made Simple," and 23andMe , ... help guide better food choices.  Zipongo can now provide ... their food preferences, health goals and biometrics, but also ... certain food choices. Zipongo,s personalized food decision ...
Breaking Biology News(10 mins):