Featured Research

from universities, journals, and other organizations

Virginia Tech Studies Reveal Reaction Pathways For Ozone On Organic Surfaces

Date:
April 1, 2006
Source:
Virginia Tech
Summary:
Virginia Tech chemistry researchers have made a discovery about how ozone degrades organic surfaces such as biological surfactants and polymeric coatings.

Virginia Tech chemistry researchers have made a discovery about how ozone degrades organic surfaces such as biological surfactants and polymeric coatings.

The research will be presented at the 231st American Chemical Society (ACS) national meeting being held in Atlanta on March 26-30.

John Morris' group is studying the reactions of small molecules found in pollution of surfaces. Morris, associate professor of chemistry in the College of Science, and his students are looking specifically at hydrochloric acid (HCl) and triatomic oxygen (O3, a toxic form of oxygen), pollutants known to play a major role in atmosphere chemistry. They are using functionalized self-assembled monolayers (thin films -- one molecule thick) to simulate organic surfaces. "It gives us control of the surface structure and chemical functionality so we can study how those aspects of a surface influence the fate of important gas-surface collisions," Morris said.

The experiments have led to a detailed understanding of the reaction mechanisms of HC1 and ozone on organic surfaces, which is what Morris will present in the paper authored by graduate student Larry R. Fiegland, Morris, and graduate student B. Scott Day.

A major finding is that ozone reacts with carbon-carbon double bonds to form crosslinked networks within the thin film. Carbon-carbon double bonds are the very strong forces that link carbon atoms together to help form long-chain molecules -- major components of many polymeric materials found in everyday life. "The formation of crosslinked networks is a new discovery -- that provides a fundamental understanding of how, on the molecular level, organic surfaces degrade with prolonged exposure to ozone, a major atmospheric pollutant," Morris said. "Understanding the reaction mechanism may someday lead to more robust films for organic coatings, or polymeric coatings, such as paints."

The paper, "Reaction dynamics of HCl and O3 in collisions with omega-functionalized self-assembled monolayers" (COLL 515), will be presented at 3:30 p.m. at the OMNI at CNN Center International Ballroom F as part of the Division of Colloid and Surface Chemistry symposium honoring ACS Adamson Award Winner Steven Bernasek.

Morris' National Science Foundation Career Award funds the research.


Story Source:

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


Cite This Page:

Virginia Tech. "Virginia Tech Studies Reveal Reaction Pathways For Ozone On Organic Surfaces." ScienceDaily. ScienceDaily, 1 April 2006. <www.sciencedaily.com/releases/2006/04/060401111700.htm>.
Virginia Tech. (2006, April 1). Virginia Tech Studies Reveal Reaction Pathways For Ozone On Organic Surfaces. ScienceDaily. Retrieved April 19, 2014 from www.sciencedaily.com/releases/2006/04/060401111700.htm
Virginia Tech. "Virginia Tech Studies Reveal Reaction Pathways For Ozone On Organic Surfaces." ScienceDaily. www.sciencedaily.com/releases/2006/04/060401111700.htm (accessed April 19, 2014).

Share This



More Matter & Energy News

Saturday, April 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Small Reactors Could Be Future of Nuclear Energy

Small Reactors Could Be Future of Nuclear Energy

AP (Apr. 17, 2014) After the Fukushima nuclear disaster, the industry fell under intense scrutiny. Now, small underground nuclear power plants are being considered as the possible future of the nuclear energy. (April 17) Video provided by AP
Powered by NewsLook.com
Horseless Carriage Introduced at NY Auto Show

Horseless Carriage Introduced at NY Auto Show

AP (Apr. 17, 2014) An electric car that proponents hope will replace horse-drawn carriages in New York City has also been revealed at the auto show. (Apr. 17) Video provided by AP
Powered by NewsLook.com
Honda's New ASIMO Robot, More Human-Like Than Ever

Honda's New ASIMO Robot, More Human-Like Than Ever

AFP (Apr. 17, 2014) It walks and runs, even up and down stairs. It can open a bottle and serve a drink, and politely tries to shake hands with a stranger. Meet the latest ASIMO, Honda's humanoid robot. Duration: 00:54 Video provided by AFP
Powered by NewsLook.com
German Researchers Crack Samsung's Fingerprint Scanner

German Researchers Crack Samsung's Fingerprint Scanner

Newsy (Apr. 16, 2014) German researchers have used a fake fingerprint made from glue to bypass the fingerprint security system on Samsung's new Galaxy S5 smartphone. 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:
from the past week

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