Navigation Links
York researchers discover important mechanism behind nanoparticle reactivity
Date:11/3/2013

An international team of researchers has used pioneering electron microscopy techniques to discover an important mechanism behind the reaction of metallic nanoparticles with the environment.

Crucially, the research led by the University of York and reported in Nature Materials, shows that oxidation of metals - the process that describes, for example, how iron reacts with oxygen, in the presence of water, to form rust - proceeds much more rapidly in nanoparticles than at the macroscopic scale. This is due to the large amount of strain introduced in the nanoparticles due to their size which is over a thousand times smaller than the width of a human hair.

Improving the understanding of metallic nanoparticles particularly those of iron and silver - is of key importance to scientists because of their many potential applications. For example, iron and iron oxide nanoparticles are considered important in fields ranging from clean fuel technologies, high density data storage and catalysis, to water treatment, soil remediation, targeted drug delivery and cancer therapy.

The research team, which also included scientists from the University of Leicester, the National Institute for Materials Science, Japan and the University of Illinois at Urbana-Champaign, USA, used the unprecedented resolution attainable with aberration-corrected scanning transmission electron microscopy to study the oxidisation of cuboid iron nanoparticles and performed strain analysis at the atomic level.

Lead investigator Dr Roland Krger, from the University of York's Department of Physics, said: "Using an approach developed at York and Leicester for producing and analysing very well-defined nanoparticles, we were able to study the reaction of metallic nanoparticles with the environment at the atomic level and to obtain information on strain associated with the oxide shell on an iron core.

"We found that the oxide film grows much faster on a nanopart
'/>"/>

Contact: Caron Lett
pressoffice@york.ac.uk
44-190-432-2029
University of York
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Researchers discover how retinal neurons claim the best brain connections
2. Researchers measure flow from a nanoscale fluid jet
3. Researchers advance scheme to design seamless integrated circuits etched on graphene
4. Harvard researchers, pharma experts offer recommendations to expand access to clinical trial data
5. Virginia Tech researchers publish study on jellyfish energy consumption that will improve bio-inspired robotic designs for Navy
6. Spanish researchers sequence non-infiltrating bladder cancer exome
7. Researchers discover and treat toxic effects of ALS mutation in neurons made from patients skin cells
8. Researchers advance toward engineering wildly new genome
9. Researchers use nanoparticles to deliver vaccines to lungs
10. UCLA researchers smartphone microscope can detect a single virus, nanoparticles
11. Researchers produce nanostructures with potential to advance energy devices
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/19/2014)... NC (PRWEB) September 19, 2014 ... Biobased Product Label for its Organic Cotton . ... product’s amount of renewable biobased ingredients meets or exceeds ... intermediate materials composed in whole or in significant part ... logo/label will allow our Organic cotton to be immediately ...
(Date:9/19/2014)... , September 19, 2014 The new ... Spain , available today on PharmaBoardroom.com for ... Eurozone crisis that rocked the Spanish economy in 2009, and ... pharma community has remained pragmatic in times of trouble. ... still the fifth biggest European market, and the general conditions ...
(Date:9/18/2014)... , Sept. 18, 2014 /PRNewswire-iReach/ -- DeepResearchReports.com ... China Acetic Acid Industry" and "2014 Deep Research ... reports to its research database. Photo ... Deep Research Report on Global and China Acetic ... report on China and ...
(Date:9/18/2014)... September 18, 2014 Texas Governor ... Sharp, Texas A&M Health Science Center CEO Brett ... of Health and Human Services (HHS), State of ... national pandemic influenza vaccine manufacturing facility in Bryan, ... anchor for the Texas A&M Biocorridor – a ...
Breaking Biology Technology:Barnhardt Manufacturing Company Earns USDA Certified Biobased Product Certification and Label for Organic Cotton 2PharmaBoardroom Releases New Spain Pharmaceuticals Report 2PharmaBoardroom Releases New Spain Pharmaceuticals Report 3Acetic Acid Market & Sodium Stannate Industry (China, Global) Research Report 2Acetic Acid Market & Sodium Stannate Industry (China, Global) Research Report 3Acetic Acid Market & Sodium Stannate Industry (China, Global) Research Report 4Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 2Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 3Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 4
... - Researchers are making progress in creating digital transistors ... thought to dramatically limit the material,s use in computers ... of carbon that conducts electricity with little resistance or ... earned a Nobel Prize in physics - it was ...
... was named by FierceBiotech today as one of 2011,s ... promising private biotechnology companies in the industry. This is FierceBiotech,s ... has done a super job of raising the funds and ... combination therapy – toward the market," says Ryan McBride, the ...
... Wash. and VANCOUVER, British Columbia, Sept. 6, 2011 ... today that data from two studies, a Phase II ... compound custirsen (OGX-011/TV-1011), were published in the September issues ... Cancer Research . Custirsen inhibits ...
Cached Biology Technology:Innovation is step toward digital graphene transistors 2FierceBiotech Names Pearl Therapeutics a 2011 Fierce 15 Biotech 2FierceBiotech Names Pearl Therapeutics a 2011 Fierce 15 Biotech 3OncoGenex Announces Publication of Custirsen Phase II Clinical and Pre-Clinical Data in Leading Cancer Journals 2OncoGenex Announces Publication of Custirsen Phase II Clinical and Pre-Clinical Data in Leading Cancer Journals 3OncoGenex Announces Publication of Custirsen Phase II Clinical and Pre-Clinical Data in Leading Cancer Journals 4OncoGenex Announces Publication of Custirsen Phase II Clinical and Pre-Clinical Data in Leading Cancer Journals 5
(Date:9/18/2014)... of carbon and nitrogen comprise all spheres of ... systems have caused imbalances and perturbations that resulted ... Increased GHGs result in climate changes which influence ... and the atmosphere. Understanding these feedback mechanisms has ... environmental science during the past three decades. , ...
(Date:9/18/2014)... it that when people are too stressed they are ... the Brain Mind Institute (BMI) at EPFL have just ... between chronic stress and the loss of social skills ... attacks a synaptic regulatory molecule in the brain. This ... Communications . , Carmen Sandi,s team went to ...
(Date:9/18/2014)... is probably the ultimate form of camouflage: you don,t ... this strategy is not as uncommon as you might ... County, USA, explains that the larval life stages of ... part of the anatomy that most creatures cannot make ... have to shield each individual eye unit with an ...
Breaking Biology News(10 mins):Greenhouse gas research enters a new era 2How stress tears us apart 2Transparent larvae hide opaque eyes behind reflections 2
... Bethesda, MD This FASEB Science Research Conference ... of intestinal lipid digestion and absorption with new ... to understanding the mechanisms of health maintenance and ... resistance and diabetes, dyslipidemia, intestinal failure and gastrointestinal ...
... Conference focuses on recent advances in the methods for ... to promote the discovery and exchange of new methods ... facilitate the application of methods in protein structure analysis ... to support and foster the education of researchers in ...
... from Iowa State University (USA) published a study which ... metals. Now, a team from the University of the ... results throw this discovery into question. This has reaffirmed ... validity in the press. The resistance and elasticity ...
Cached Biology News:Spider silk ties scientists up in knots 2
... The GeneSwitch Cell Lines stably ... pSwitch. Each cell line is functionally ... transfection with the expression control vector ... expression after treatment with mifepristone (Figure ...
...
... Immulon 2HB ELISA ... provide increased binding affinity for hydrophilic ... bottom works well for reagent injection ... Each strip accomodates ...
...
Biology Products: