Phase transfer of oleic acid stabilized rod-shaped anatase TiO2 nanocrystals

SURFACE SCIENCE

卷:648

Article

Wilkerson, Rachel J.¹  Elder, Theresa¹  Sowinksi, Olivia¹  Fostvedt, Jade I.¹  Hoefelmeyer, James D.¹ 

[1] Univ S Dakota, Dept Chem, 414 E Clark St, Vermillion, SD 57069 USA

关键词: TiO2;    Nanocrystal;    Phase transfer;    Catechol;    Ligand exchange;    Decarboxylation;   

DOI  :  10.1016/j.susc.2015.10.028

来源: Elsevier

【 摘 要 】

Three methods were evaluated for phase transfer of oleic acid stabilized TiO2 nanorods from non-polar phase to an aqueous phase. Three alkyltrimethylammonium bromide (C-6, C-8, C-12) surfactants were tested and compared with an amphiphilic polymer as interdigitation agents. Ligand substitutions with catechol derivatives with polar functional groups para to the -enediol were evaluated as well. The molecular surfactants were ineffective compared to the amphiphilic polymer in the interdigitation phase transfer approach. Ligand substitution with catechols proceeded efficiently with phase transfer. The ligand substitution reactions were accompanied by gas evolution, which was found to result from decarboxylation of oleic acid in alkaline aqueous conditions. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

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