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:4/21/2017)... ... April 21, 2017 , ... Having worked on the design of the ... to introduce it to top lab design architects from around the country at the ... of Industrial Design and Engineering Greg Casey will be at the show, where they ...
(Date:4/21/2017)... ... April 21, 2017 , ... Frederick ... a range of emerging bio and technology start-ups, is hosting “Celebration Friday” (a ... double event will start with libations and networking at 3:30 p.m. at FITCI’s ...
(Date:4/20/2017)... Lilly and Company (NYSE: LLY ) will ... of migraine at the American Academy of Neurology (AAN) ... in Boston . ... and patient outcomes data for galcanezumab in patients with ... migraine headache days among patients with episodic migraine. Lilly ...
(Date:4/20/2017)... /PRNewswire/ - Prometic Life Sciences Inc. (TSX: PLI) (OTCQX: PFSCF) ("Prometic" ... Liver Congress ("ILC") 2017 of the European Association for the ... on the positive effects of PBI-4050 on reduction of ... metabolic syndrome. ... Dr. Lyne Gagnon, Vice-President of R&D Pre-clinical of Prometic "This ...
Breaking Biology Technology:
(Date:4/11/2017)... N.Y. , April 11, 2017 ... fingerprints, but researchers at the New York University ... College of Engineering have found that partial similarities ... security systems used in mobile phones and other ... thought. The vulnerability lies in the ...
(Date:4/5/2017)... KEY FINDINGS The global market for stem ... 25.76% during the forecast period of 2017-2025. The rise ... growth of the stem cell market. Download ... The global stem cell market is segmented on the ... cell market of the product is segmented into adult ...
(Date:3/30/2017)... March 30, 2017 Trends, opportunities and forecast ... behavioral), by technology (fingerprint, AFIS, iris recognition, facial recognition, ... others), by end use industry (government and law enforcement, ... and banking, and others), and by region ( ... Asia Pacific , and the Rest ...
Breaking Biology News(10 mins):