Interaction and UV-Stability of Various Organic Capping Agents on the Surface of Anatase Nanoparticles
Anatase nanoparticles synthesized by the sol-gel method were surface-functionalized with long alkyl chain coupling agents as compatibilizers for a nonpolar environment, containing different anchor groups for surface interaction namely phosphonate (dodecyl phosphonate), carboxylate (dodecanoic acid)...
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| Format: | Article |
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MDPI AG
2014-04-01
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| Series: | Materials |
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| Online Access: | http://www.mdpi.com/1996-1944/7/4/2890 |
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| author | Mohsin Raza Angelika Bachinger Nina Zahn Guido Kickelbick |
| author_facet | Mohsin Raza Angelika Bachinger Nina Zahn Guido Kickelbick |
| author_sort | Mohsin Raza |
| collection | DOAJ |
| description | Anatase nanoparticles synthesized by the sol-gel method were surface-functionalized with long alkyl chain coupling agents as compatibilizers for a nonpolar environment, containing different anchor groups for surface interaction namely phosphonate (dodecyl phosphonate), carboxylate (dodecanoic acid), sulfate (sodium dodecyl sulphate), and amine (dodecyl amine). It was shown that the surface of the nanoparticles can be functionalized with the various surface groups applying similar reaction conditions. The kind of surface interaction was analyzed applying FTIR spectroscopy. The phosphonate and the carboxylate groups interact with the surface via quite strong covalent or coordinative interactions, respectively. The sulfate and amine based coupling agents on the other hand exhibit electrostatic interactions. UV stability studies of the surface bound groups revealed different degradation mechanisms for the various functionalities and moreover showed that phosphonates are the most stable among the investigated surface capping groups. |
| first_indexed | 2024-04-13T09:37:12Z |
| format | Article |
| id | doaj.art-eb0d0d4247c642258a9ad5249f404c73 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-13T09:37:12Z |
| publishDate | 2014-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-eb0d0d4247c642258a9ad5249f404c732022-12-22T02:52:03ZengMDPI AGMaterials1996-19442014-04-01742890291210.3390/ma7042890ma7042890Interaction and UV-Stability of Various Organic Capping Agents on the Surface of Anatase NanoparticlesMohsin Raza0Angelika Bachinger1Nina Zahn2Guido Kickelbick3Vienna University of Technology, Institute of Materials Chemistry, Getreidemarkt 9/16, Vienna 1060, AustriaVienna University of Technology, Institute of Materials Chemistry, Getreidemarkt 9/16, Vienna 1060, AustriaSaarland University, Inorganic Solid State Chemistry, Am Markt Zeile 3, Saarbrücken 66125, GermanySaarland University, Inorganic Solid State Chemistry, Am Markt Zeile 3, Saarbrücken 66125, GermanyAnatase nanoparticles synthesized by the sol-gel method were surface-functionalized with long alkyl chain coupling agents as compatibilizers for a nonpolar environment, containing different anchor groups for surface interaction namely phosphonate (dodecyl phosphonate), carboxylate (dodecanoic acid), sulfate (sodium dodecyl sulphate), and amine (dodecyl amine). It was shown that the surface of the nanoparticles can be functionalized with the various surface groups applying similar reaction conditions. The kind of surface interaction was analyzed applying FTIR spectroscopy. The phosphonate and the carboxylate groups interact with the surface via quite strong covalent or coordinative interactions, respectively. The sulfate and amine based coupling agents on the other hand exhibit electrostatic interactions. UV stability studies of the surface bound groups revealed different degradation mechanisms for the various functionalities and moreover showed that phosphonates are the most stable among the investigated surface capping groups.http://www.mdpi.com/1996-1944/7/4/2890titaniasurface functionalizationnanoparticlesphotocatalytic decomposition |
| spellingShingle | Mohsin Raza Angelika Bachinger Nina Zahn Guido Kickelbick Interaction and UV-Stability of Various Organic Capping Agents on the Surface of Anatase Nanoparticles Materials titania surface functionalization nanoparticles photocatalytic decomposition |
| title | Interaction and UV-Stability of Various Organic Capping Agents on the Surface of Anatase Nanoparticles |
| title_full | Interaction and UV-Stability of Various Organic Capping Agents on the Surface of Anatase Nanoparticles |
| title_fullStr | Interaction and UV-Stability of Various Organic Capping Agents on the Surface of Anatase Nanoparticles |
| title_full_unstemmed | Interaction and UV-Stability of Various Organic Capping Agents on the Surface of Anatase Nanoparticles |
| title_short | Interaction and UV-Stability of Various Organic Capping Agents on the Surface of Anatase Nanoparticles |
| title_sort | interaction and uv stability of various organic capping agents on the surface of anatase nanoparticles |
| topic | titania surface functionalization nanoparticles photocatalytic decomposition |
| url | http://www.mdpi.com/1996-1944/7/4/2890 |
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