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Tailoring the stability/aggregation of one-dimensional TiO₂(B)/titanate nanowires using surfactants

Selmani, A.; Lützenkirchen, J.; Kučanda, K.; Dabić, D.; Redel, E.; Marion, I. D.; Kralj, D.; Jurašin, D. D.; Sikirić, M. D.

Abstract (englisch):
The increased utilization of one-dimensional (1D) TiO2 and titanate nanowires (TNWs) in various applications was the motivation behind studying their stability in this work, given that stability greatly influences both the success of the application and the environmental impact. Due to their high abundance in aqueous environments and their rich technological applicability, surfactants are among the most interesting compounds used for tailoring the stability.

The aim of this paper is to determine the influence of surfactant molecular structure on TNW stability/aggregation behavior in water and aqueous NaBr solution by dynamic and electrophoretic light scattering. To accomplish this, two structurally different quaternary ammonium surfactants (monomeric DTAB and the corresponding dimeric 12-2-12) at monomer and micellar concentrations were used to investigate TNW stability in water and NaBr. It was shown that TNWs are relatively stable in Milli-Q water. However, the addition of NaBr induces aggregation, especially as the TNW mass concentration increases. DTAB and 12-2-12 adsorb on TNW surfaces as a result of the superposition of favorable electrostatic and hydrophobic interactions. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000099627
Veröffentlicht am 06.11.2019
Coverbild
Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Institut für Nukleare Entsorgung (INE)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 2190-4286
KITopen-ID: 1000099627
Erschienen in Beilstein journal of nanotechnology
Band 10
Seiten 1024-1037
Vorab online veröffentlicht am 13.05.2019
Schlagworte 1D nanomaterials; cationic surfactants; stability; surface complexation model; titanate nanowires
Nachgewiesen in Web of Science
Scopus
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