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| Project leader |
Selmani Atiđa |
| Project co-leader: |
dr. Johannes Luetzenkirchen |
| Administering organization: |
Faculty of Science, University of Zagreb, Horvatovac 102a, 10 000 Zagreb, Croatia, www.pmf.hr,
Dean: Prof. Amir Hamzić, Ph. D.
phone: +385 (1) 460 6010
fax: +385 (1) 460 6013
e-mail:dekanat@dekanat.pmf.hr
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| Partner Institution/Company: |
Institute for Nuclear Waste Management, Karlsruhe Institute for Technology |
| Grant type: |
2A |
| Project title: |
Adsorption of Ions at Teflon Surfaces |
| Project summary: |
Interfacial charging properties of inert interfaces (air/water, Teflon/water, etc.) are currently under hot debate. Ions adsorption at hydrophobic surfaces affects many processes in nature and industry. Thus ions adsorption, especially that of radioactive ions (e.g. Am(III), Cm(III)), at trace levels on walls of test tubes (e.g. Teflon, other synthetic material) in laboratory work is experimental problem. So far container materials are chosen based on trial and error, due to the lack of understanding of ion binding to such “inert” surfaces. The aim of this project is to study this process from a fundamental point of view. Adsorption of relevant ions onto Teflon will be studied in order to gain knowledge about ion surface concentrations at hydrophobic surface/water interfaces as a function of pH and electrolyte concentration, but also to reinforce knowledge about the structure of the adsorbed layer and the factors influencing the bare surface properties.
Collaboration with Karlsruhe Institute for Technology will enable Croatian group access to the state-of-the-art spectroscopic methods for interface characterization not avaiable in Croatia. In this way, considerable expertise of Croatian group in investigation of interfacial phenomena will be broadened enabling establishement of long term collaboration and integration of Croatian scientists into European Research Area.
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| Hrvatski sažetak: |
Porijeklo nastajanja naboja na inertnim međupovršinama (zrak/voda, Teflon/voda, itd.) još nije razjašnjeno. Adsorpcija iona na hidrofobne površine utječe na mnoge prirodne i industrijske procese. Tako adsorpcija tragova iona, posebno radioaktivnih (npr. Am (III), CM (III)), na stijenkama epruveta (npr. teflon, drugi sintetski materijali) u laboratorijskim uvjetima predstavlja eksperimentalni problem. Materijal posude obično se bira temeljem pokušaja i pogreške, zbog nedostatnog razumijevanja vezanja iona na takve "inertne" površine. Cilj ovog projekta je proučiti taj proces s fundamentalne točke gledišta. U tu svrhu istražit će se adsorpcija relevantnih iona na površinu Teflona sa svrhom određivanja površinske koncentracije na međupovršini hidrofoban materijal/vodena otopina elektrolita u ovisnosti o pH i koncentraciji elektrolita, te proširivanja znanja o strukturi adsorbiranog sloja i čimbenicima koji utječu na svojstva čistih (golih) površina.
Suradnja s Karlsruhe Institute for Technology omogućit će hrvatskom timu pristup najmodernijim spektroskopskim metodama za karakterizaciju međupovršina, koje nisu dostupne u Hrvatskoj. Na taj način, značajna ekspertiza hrvatskog tima u istraživanju međupovršinskih pojava bit će proširena što će omogućiti dugoročnu suradnju i integraciju hrvatskih znanstvenika u europsko istraživačko područje.
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| Amount requested from UKF: |
36 000 HRK |
| Amount of matching funding: |
7 200 HRK |
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