A team of researchers from Greece and Spain have managed to synthesize silver nanoparticles, which are of great interest thanks to their application in biotechnology, by using strawberry tree leaf extract. The new technology is ecological, simple, cheap and very fast.
The strawberry tree leaves help to produce silver nanoparticles.
Credit: Beamillion.
Strawberry tree leaf (Arbutus unedo) and silver nitrate (AgNO3). With just these two ingredients scientists can now produce silver nanoparticles, a material that is used in advanced technologies from compounds for distributing medicines through to electronic devices, catalysts, contaminant solvents.
Strawberry tree leaf (Arbutus unedo) and silver nitrate (AgNO3). With just these two ingredients scientists can now produce silver nanoparticles, a material that is used in advanced technologies from compounds for distributing medicines through to electronic devices, catalysts, contaminant solvents.
Silver nanoparticles surrounded by the organic layer.
Credit: N. Michailidis et al.
The technique has been developed by scientists at the Aristotle University of Thessaloniki (Greece) and Madrid's Carlos III University (UC3M) and consists of adding an extract of the leaf to a silver nitrate aqueous solution. Silver nanoparticles form immediately after stirring the mixture for some minutes.
"There are other methods for producing them but this process is the most simple, low cost and easy to implement given that a non-toxic plant is used at a temperature of between 25ºC and 80ºC", outlines Sophia Tsipas, UC3M researcher and coauthor of the study, which is published on the Materials Letters journal.
Tsipas adds that "the innovation of this method lies in the fact that it allows us to control the parameters for obtaining nanoparticles of a known size (from 5 to 40 nm) and geometry (spheres, pyramids, cubes). The nanoparticles produced remained stable over long periods of time of up to 6 months."
Strawberry tree leaves facilitate such stability as they form an organic layer of various nanometres around the silver particles. What is more, the extract acts as a reducing agent and stabilizer for the entire product.
The nanoparticles obtained have been characterised and verified with various techniques (transmission electron microscopy, ultraviolet spectroscopy and FTIR). As well as optimising the process, the team is currently studying how to produce similar nanometric sized particles with other metals like gold and copper.
Contacts and sources:
Plataforma SINC
The technique has been developed by scientists at the Aristotle University of Thessaloniki (Greece) and Madrid's Carlos III University (UC3M) and consists of adding an extract of the leaf to a silver nitrate aqueous solution. Silver nanoparticles form immediately after stirring the mixture for some minutes.
"There are other methods for producing them but this process is the most simple, low cost and easy to implement given that a non-toxic plant is used at a temperature of between 25ºC and 80ºC", outlines Sophia Tsipas, UC3M researcher and coauthor of the study, which is published on the Materials Letters journal.
Tsipas adds that "the innovation of this method lies in the fact that it allows us to control the parameters for obtaining nanoparticles of a known size (from 5 to 40 nm) and geometry (spheres, pyramids, cubes). The nanoparticles produced remained stable over long periods of time of up to 6 months."
Strawberry tree leaves facilitate such stability as they form an organic layer of various nanometres around the silver particles. What is more, the extract acts as a reducing agent and stabilizer for the entire product.
The nanoparticles obtained have been characterised and verified with various techniques (transmission electron microscopy, ultraviolet spectroscopy and FTIR). As well as optimising the process, the team is currently studying how to produce similar nanometric sized particles with other metals like gold and copper.
Contacts and sources:
Plataforma SINC
Citation: Pantelis Kouvaris, Andreas Delimitis, Vassilis Zaspalis, Dimitrios Papadopoulos, Sofia A. Tsipas, Nikolaos Michailidis. "Green synthesis and characterization of silver nanoparticles produced using Arbutus Unedo leaf extract". Materials Letters 76: 18-20, June 2012. Doi:10.1016/j.matlet.2012.02.025.
Thank you for having a look a this,we atAuroraare trying to join theList Top Engineering Collegesby creating new practices in the Engineering Education in India.
ReplyDeleteConsumer Angle positioning in the perspective from the consumer orientation is according to consumer spending characteristics, psychological habits, way of thinking and the value orientation of the overall considerations, and then cast them, make positioning, such as some of the most luxury positioning the best of the show people the psychological status, and then to cater to the needs of their.
ReplyDeleteBollywood saree
Good to share your theme is very important for us useful ... Thank you. I just like this approach you with this subject. It's not every day, not every day can be found something so simple and enlightening.
ReplyDeleteRent a Cab in Jodhpur
good nano theory...
ReplyDeletesilver nanoparticles
"I like all the reviews have been posted by the visitors ofthis site ,some of them are very good suggested regard the article."
ReplyDeletesalwar kameez indian style
Like Bob, this has helped me out a lot. I was utterly clueless before I came across this guide. I really appreciate it as well.
ReplyDeletemens linen suit
I am sure my visitors will find that very useful. I hope you write more on this subject! I found your website perfect for my needs. Thanks for sharing the great ideas. This is an interesting and so well maintained blog. Whole article is too good and well written.
ReplyDeletebuy furniture in bulk