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Göteborgs universitets publikationer

Adsorption of antifouling booster biocides on metal oxide nanoparticles: Effect of different metal oxides and solvents

Författare och institution:
Lyuba Shtykova (Institutionen för kemi- och bioteknik, Teknisk ytkemi, Chalmers); Camilla Fant (Institutionen för kemi- och bioteknik, Teknisk ytkemi, Chalmers); Paul Handa (Institutionen för kemi- och bioteknik, Teknisk ytkemi, Chalmers); Ann I. Larsson (Institutionen för marin ekologi, Tjärnö marinbiologiska laboratorium); Kent Berntsson (-); Hans Blanck (Institutionen för växt- och miljövetenskaper); Roger Simonsson (-); Magnus Nydén (Institutionen för kemi- och bioteknik, Teknisk ytkemi, Chalmers & SuMo Biomaterials, Chalmers); Hanna Härelind Ingelsten (Institutionen för kemi- och bioteknik, Teknisk ytkemi, Chalmers & Kompetenscentrum katalys (KCK), Chalmers)
Publicerad i:
Progress in Organic Coatings, 64 ( 1 ) s. 20-26
ISSN:
0300-9440
Publikationstyp:
Artikel, refereegranskad vetenskaplig
Publiceringsår:
2009
Språk:
engelska
Fulltextlänk:
Sammanfattning (abstract):
Controlling the release rate of biocides (antifouling agents) from a paint coating is a key issue for the development of multi-season antifouling marine coatings. One promising approach is the use of nanoparticles onto which biocides are adsorbed to prevent premature depletion of the biocide. Adsorption of one novel (Medetomidine) and six commercially available and widely used antifouling biocides (Chlorothalonile, Dichlofluanid, Diuron, Irgarol, Seanine, Tolylfluanid) onto oxide nanoparticles (Al2O3, CuO, MgO, SiO2, TiO2, ZnO) was investigated by HPLC and NMR in different organic solvents. Large differences in adsorption strength depending on the type of nanoparticle and solvent employed were observed. It was shown that nanoparticles coordinate preferentially with the imidazole moiety of Medetomidine. Independent of the type of particle this interaction was considerably stronger in comparison to the other biocides. However, the interaction strength was strongly dependant on the type of solvent, where the largest strongest interaction was achieved in o-xylene. In addition field tests were performed where a considerable decrease in release rate was displayed from coatings containing Medetomidine adsorbed to nanoparticles compared to coatings containing Medetomidine as single additive.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
NATURVETENSKAP ->
Kemi
Chalmers styrkeområden:
Materialvetenskap
Postens nummer:
88795
Posten skapad:
2009-01-23 09:07
Posten ändrad:
2016-08-15 10:56

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