Controlled Self-Assembly of Mesoporous CuO Networks Guided by Organic Interlinking

José Antonio Ayllón*, Julio Fraile, Concepción Domingo

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

Abstract

© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim The controlled aggregation of copper oxide nanoparticles (CuO NPs) induced by a multitopic carboxylic acid allows the formation of mesoporous structures with high surface area, in the order of 100 m 2 g −1 , as demonstrated herein. The main novelty in the designed process is the use, as a previous step, of a sacrificeable monotopic carboxylate ligand for capping the CuO NPs. This step avoids the often observed unwanted behavior of uncontrolled aggregation and material densification. The monotopic 3,6,9-trioxadecanoate (HTODA) is used as the capping agent to prepare TODA@CuO, a starting material that forms colloidal dispersions in ethanol. For NPs self-assembly, the bulky tricarboxylic acid 4,4′,4′′,-benzene-1,3,5-triyl-tris(benzoic acid) (H 3 BTB) is chosen as an efficient interlinker in the controlled aggregation. The obtained mesoporous network shows a considerable thermal stability, retaining ≈70% of its specific surface area after annealing at 300 °C under vacuum. Thermal treatment involves TODA capping agent elimination, but not BTB linker. The simultaneous reduction of the CuO NPs to a Cu 2 O/Cu mixture is observed.
Original languageEnglish
Article number1800453
Number of pages7
JournalParticle and Particle Systems Characterization
Volume36
Issue number3
DOIs
Publication statusPublished - 1 Mar 2019

Keywords

  • COPPER(II)
  • DESIGN
  • EFFICIENT
  • FRAMEWORKS
  • MESOCRYSTAL
  • NANOPARTICLES
  • OXIDE
  • SILICA
  • mesopore
  • nanoparticles interlinking
  • oxides
  • self-assembly
  • synthesis

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