Navigation Links
New information on binding gold particles over metal oxide surfaces
Date:1/22/2013

The strong binding of gold on electronically modified calcium oxide can now be understood in detail. In a computational study, researchers Jenni Andersin, Janne Nevalaita, Karoliina Honkala and Hannu Hkkinen at the University of Jyvskyl Nanoscience Center have shown how redox chemistry entirely determines the adsorption strength of gold on the modified oxide where one metal atom is replaced with molybdenum. The study was funded by the Academy of Finland.

The research team applied the so-called Born-Haber cycle to analyse how different terms contribute to adsorption energy. The calculations were done at the supercomputers of the CSC IT Center of Science by employing quantum mechanical simulation methods.

In the oxide lattice, the molybdenum atom donates two electrons into the oxide. When a gold atom adsorbs on the oxide surface, a redox reaction takes place. In this process, a third electron transferred by the dopant is gained by gold, and energy is released. By varying the dopant among several transition metal atoms, the researchers found that the amount of energy released linearly correlates with the ability of the dopant to give an electron. The trend can be used to estimate how much a guest atom stabilises gold adsorption without calculating the adsorption energy.

The research results are important for understanding catalyst-support interaction. The results fully support the experimental observation where gold nanoparticles have been seen to form flat structures over modified calcium oxide surfaces. A similar Born-Haber cycle, as applied in this study, can also be employed to analyse oxide-catalysed chemical reactions that follow the redox mechanism.

Catalysts are commonly used by industry, for instance, in the production of fuels, plastics, fertilisers and other similar products. Metal oxide surfaces are widely used as support materials for metal catalysts particles. The binding properties and shape of metal nanopart
'/>"/>

Contact: Docent Karoliina Honkala
karoliina.honkala@jyu.fi
358-408-053-686
Academy of Finland
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. New England Biolabs New Website Adds Technical Information, Easy Ordering, and Better Search
2. HealthEconomics.Com Appoints New Director of Information Technology and Operations
3. New "GMO Inside" Campaign Denounces Corporate Disinformation Campaign That Defeated Californias Prop 37
4. Researchers unlock disease information hidden in genomes control circuitry
5. New structural information on functionalization of gold nanoparticles
6. UK research paves way to a scalable device for quantum information processing
7. GenoSpace Announces the Launch of a Cloud-Based "Information Ecosystem" for Advancing 21st-Century Personalized Medicine
8. "Biological Control Industry Overview: Companies & Products" Edition 2 is Here. Critical information for Understanding the Global Biopesticide/Biocontrol Market
9. Quammen Health Care Consultants Takes Over Information Technology Reins at Faith Regional Health Services
10. New England Biolabs Introduces Polbase, an Information Repository of Scientific Data for Polymerase Researchers
11. Lung mucus gel scaffold prevents nanoparticles from getting through
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New information on binding gold particles over metal oxide surfaces
(Date:7/31/2015)... ... July 31, 2015 , ... R-Biopharm ... quantification of partially hydrolyzed gluten in foods, has been accepted by AOAC International ... “Partially Hydrolyzed Gluten in Fermented Cereal-Based Products by R5 Competitive ELISA,” based on ...
(Date:7/30/2015)... Texas (PRWEB) , ... July 30, 2015 , ... The ... and in-depth study on the current state of the global Propanol market with a ... Sinopec, CNPC, BASF, Eastman, Dow, Carboclor, Mitsui Chemicals, Oxea, ISU Chemical, Sanofi, Royal Dutch ...
(Date:7/30/2015)... ISN improves the efficiency and effectiveness of contractor management systems. ISN,s online contractor management platform, ... 80 countries. ... ... Over 60,000 Worldwide Customers In More Than 80 Countries ... Dallas, TX , ISN has additional offices in Calgary , ...
(Date:7/30/2015)... ... July 30, 2015 , ... GEA's Pony™ NS2006L ... continuous operation up to 1500 bar. The sanitary design gauge of the NS2006L ... contamination. , The Pony™ NS2006L homogenizer is an ideal solution for the processing ...
Breaking Biology Technology:RIDASCREEN® Competitve Gliadin Receives AOAC Official First Action Status 2Global Propanol Market Technical Data and Manufacturing Analysis 2020 2Global Propanol Market Technical Data and Manufacturing Analysis 2020 3ISN Reaches Over 60,000 Worldwide Customers 2ISN Reaches Over 60,000 Worldwide Customers 3GEA Announces the Pony™ NS2006L… a Self-contained, High Pressure Lab Homogenizer for Product Development Ensuring Maximum Efficiency and Safety 2
... Sangamo,BioSciences, Inc. (Nasdaq: SGMO ) today announced ... results on Wednesday, April 30,2008, after the market closes. ... at 2:00 p.m. PT, which will be open to ... the company will review,the financial results and discuss other ...
... April 23 Schering-Plough,Corporation (NYSE: SGP ) ... from 12 product franchises in Europe. These agreements ... European Commission as part,of its October 2007 clearance ... from Akzo Nobel N.V., In two separate ...
... Within the First Eight Months Since its Introduction in ... VYVANSE has Achieved Over One Million ... to Significantly Improve the Symptoms of ADHD (Inattention, ... 23 /PRNewswire-FirstCall/,-- Shire plc (LSE: SHP) (NASDAQ: SHPGY,), the ...
Cached Biology Technology:Sangamo BioSciences Announces First Quarter Conference Call and Webcast 2Sangamo BioSciences Announces First Quarter Conference Call and Webcast 3Schering-Plough Announces Planned Divestiture of Select Animal Health Products in Europe 2FDA Approves VYVANSE(TM) (lisdexamfetamine dimesylate), the First and Only Once-Daily Prodrug Stimulant to Treat ADHD in Adults 2FDA Approves VYVANSE(TM) (lisdexamfetamine dimesylate), the First and Only Once-Daily Prodrug Stimulant to Treat ADHD in Adults 3FDA Approves VYVANSE(TM) (lisdexamfetamine dimesylate), the First and Only Once-Daily Prodrug Stimulant to Treat ADHD in Adults 4FDA Approves VYVANSE(TM) (lisdexamfetamine dimesylate), the First and Only Once-Daily Prodrug Stimulant to Treat ADHD in Adults 5FDA Approves VYVANSE(TM) (lisdexamfetamine dimesylate), the First and Only Once-Daily Prodrug Stimulant to Treat ADHD in Adults 6FDA Approves VYVANSE(TM) (lisdexamfetamine dimesylate), the First and Only Once-Daily Prodrug Stimulant to Treat ADHD in Adults 7FDA Approves VYVANSE(TM) (lisdexamfetamine dimesylate), the First and Only Once-Daily Prodrug Stimulant to Treat ADHD in Adults 8
(Date:7/9/2015)... , July 9, 2015  Unchained Labs ... announcing its acquisition of Avid Nano. Avid Nano ... scattering (DLS) systems.    Also today, ... fastest and easiest to use protein sizing system. ... measures a protein,s hydrodynamic size, size distribution, aggregation ...
(Date:7/8/2015)... 8, 2015 Summary Pancreatic cancer is ... most fatal, with a mortality rate of 10.9 deaths ... pancreatic cancer patients has highlighted a significant need for ... being met by the current market. A highly ... with varying molecule types and mechanisms of action, which ...
(Date:7/8/2015)... 8, 2015  Trovagene, Inc. (NASDAQ: TROV ... announced the launch of a study that aims ... Monitoring℠ (PCM) technology for predicting response to treatment ... combination of the novel immunotherapy agents Yervoy® (ipilumumab), ... inhibitor. The 50-patient study will be led by ...
Breaking Biology News(10 mins):Unchained Labs just can't get enough, acquires Avid Nano, rocks out the new pUNk! 2Frontier Pharma: Pancreatic Cancer - Identifying and Commercializing First-in-Class Innovation 2Frontier Pharma: Pancreatic Cancer - Identifying and Commercializing First-in-Class Innovation 3Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 2Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 3Trovagene Initiates Study to Monitor Response to Immunotherapy in Melanoma Patients Using its Precision Cancer Monitoring Platform 4
... scientists discovered that some strains of algae, when starved of ... ended, and the discovery lay dormant until people began to ... In the early 2000s, algal fuel production enjoyed a tremendous ... notion of converting "pond scum" to oil. But a recent ...
... in German . Leipzig -- Pesticides are a ... of a study in which scientists analysed data on 500 organic ... revealed that 38 per cent of these chemicals are present in ... scientists writing in the journal Science of the Total Environment ...
... continued commitment to innovation powered Equifax,s placement on the 2011 ... Financial Insights. Out of 100 companies highlighted on this annual ... than one-third of their revenue from the financial services industry. ... (NYSE: EFX ), one of the largest ...
Cached Biology News:WUSTL wins $ 2.2 million US Department of Energy grant to build a fuel producing bacterium 2WUSTL wins $ 2.2 million US Department of Energy grant to build a fuel producing bacterium 3WUSTL wins $ 2.2 million US Department of Energy grant to build a fuel producing bacterium 4Pesticides pollute European waterbodies more than previously thought 2Pesticides pollute European waterbodies more than previously thought 3Pesticides pollute European waterbodies more than previously thought 4Equifax Lands Top 20 Spot in 2011 FinTech 100 Ranking 2Equifax Lands Top 20 Spot in 2011 FinTech 100 Ranking 3
2'-Fluorine-CTP (2'-F-CTP) is readily incorporated into transcripts by T7 and SP6 R&DNA™ Polymerase and is available separately....
Human Glypican 2 Biotinylated Affinity Purified PAb...
Tachykinin (H-2)...
Rabbit Anti-Ferret Whole Serum Antibody, Unconjugated...
Biology Products: