Featured Research

from universities, journals, and other organizations

New sensor improves the level of efficiency in detecting ozone

Date:
April 15, 2014
Source:
Asociación RUVID
Summary:
Researchers have developed a more effective ozone sensor than the ones used so far. The new sensor detects this gas faster and in lower amounts. Ozone is present in the atmosphere and it plays a significant role in the protection of living beings because it absorbs the ultraviolet radiation from the sun. However, the exposure to certain concentrations of this gas may cause health problems, such as headache, burning and irritation of the eyes and respiratory system problems; that is why it is relevant to detect its presence effectively.

Researchers from the Universitat Jaume I in Castelló, the São Paulo State University in Brasil and the Aix-Marseille University in France have developed a more effective ozone sensor than the ones used so far. The new sensor detects this gas faster and in lower amounts. Ozone is present in the atmosphere and it plays a significant role in the protection of living beings because it absorbs the ultraviolet radiation from the sun. However, the exposure to certain concentrations of this gas may cause health problems, such as headache, burning and irritation of the eyes and respiratory system problems; that is why it is relevant to detect its presence effectively.

Related Articles


This sensor ―developed by researchers from the three universities― is based on silver tungstate nanofilaments. The study ―published by the magazine Nanoscale― shows that this new material can be applied as a resistance sensor that produces a good performance in the gas detection. The so called "resistance gas sensors" consist of a material that can change its electrical properties when it comes into contact with the molecules of a gas. In this case, silver tungstate electrical properties have been raised in proportion to the presence of ozone. In fact, the research has been highlighted, because of its innovative nature, by the magazines Material Views and Material Today as a relevant article or "hot paper."

The professor of Physical Chemistry at the Universitat Jaume I, Juan M. Andrés, highlights the importance of detecting the presence of ozone gas. "Despite of being a gas that offers several beneficial applications, such as the protection against harmful solar radiation or its use for water treatment, in certain concentrations it can be dangerous for health." In this sense, the World Health Organisation recommends avoiding the exposure to ozone gas above 120 ppb (parts per billion). The researcher from the Jaume I explains that with the new sensor "a fast response, as well as a very short recovering time, has been observed. It makes its properties even better than traditional sensors based in tin dioxide, tungsten trioxide or indium oxide."

The participation of the UJI lies within one of the lines of research in collaboration with the Instituto Nacional de Ciência e Tecnologia dos Materiais em Nanotecnologia(INCTMN), led by the lecturer Elsón Longo, the doctor Lourdes Gracia ―with a postdoctoral contract in the Department of Physical and Analytical Chemistry at the UJI― and the doctor by the UJI Patricio González-Navarrete, who is currently doing an Alexander von Humboldt postdoctoral stay at the Technische Universität in Berlín (Germany). The researchers at the UJI have developed and applied several methods and techniques of theoretical and computational chemistry, that are based on quantum mechanics, in order to understand and rationalize these nanomaterials properties; not only as gas sensors, but also as bactericides and luminescent sensors to guide the experimental proofs to synthesize new nanomaterials with specific technological applications. This project is a follow-up from the ones previously published in this research field.


Story Source:

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


Journal Reference:

  1. Luís F. da Silva, Ariadne C. Catto, Waldir Avansi, Laécio S. Cavalcante, Juan Andrés, Khalifa Aguir, Valmor R. Mastelaro, Elson Longo. A novel ozone gas sensor based on one-dimensional (1D) α-Ag2WO4 nanostructures. Nanoscale, 2014; 6 (8): 4058 DOI: 10.1039/c3nr05837a

Cite This Page:

Asociación RUVID. "New sensor improves the level of efficiency in detecting ozone." ScienceDaily. ScienceDaily, 15 April 2014. <www.sciencedaily.com/releases/2014/04/140415094141.htm>.
Asociación RUVID. (2014, April 15). New sensor improves the level of efficiency in detecting ozone. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2014/04/140415094141.htm
Asociación RUVID. "New sensor improves the level of efficiency in detecting ozone." ScienceDaily. www.sciencedaily.com/releases/2014/04/140415094141.htm (accessed October 25, 2014).

Share This



More Matter & Energy News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

IKEA Desk Converts From Standing to Sitting With One Button

IKEA Desk Converts From Standing to Sitting With One Button

Buzz60 (Oct. 24, 2014) — IKEA is out with a new convertible desk that can convert from a sitting desk to a standing one with just the push of a button. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com
Ebola Protective Suits Being Made in China

Ebola Protective Suits Being Made in China

AFP (Oct. 24, 2014) — A factory in China is busy making Ebola protective suits for healthcare workers and others fighting the spread of the virus. Duration: 00:38 Video provided by AFP
Powered by NewsLook.com
Real-Life Transformer Robot Walks, Then Folds Into a Car

Real-Life Transformer Robot Walks, Then Folds Into a Car

Buzz60 (Oct. 24, 2014) — Brave Robotics and Asratec teamed with original Transformers toy company Tomy to create a functional 5-foot-tall humanoid robot that can march and fold itself into a 3-foot-long sports car. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com
Police Testing New Gunfire Tracking Technology

Police Testing New Gunfire Tracking Technology

AP (Oct. 24, 2014) — A California-based startup has designed new law enforcement technology that aims to automatically alert dispatch when an officer's gun is unholstered and fired. Two law enforcement agencies are currently testing the technology. (Oct. 24) Video provided by AP
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