Advancements in the Synthesis of Building Block Materials: Experimental Evidence and Modeled Interpretations of the Effect of Na and K on Imogolite Synthesis

Nicolás Arancibia-Miranda, Mauricio Escudey, Ricardo Ramírez, Rafael I. González, Adri C.T. Van Duin, Miguel Kiwi

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

The effects of Na/K substitution during the synthesis of imogolite nanotubes (NTs) were studied using a combination of structural and surface analyses. These were complemented with molecular dynamics (MD) and DFT computational models. Our results provide strong experimental evidence, obtained by various characterization techniques (FT-IR, XRD, IEP, charge measurement, and HR-TEM), showing that K changes the imogolite dimensions. In fact, in the presence of K, the nanotubes become shorter and adopt a larger diameter. Moreover, the presence of the amorphous structures associated with allophane increases, even for low K concentrations. Our results underline the complexity of imogolite synthesis engineering, highlighting their high sensitivity to the chemicals that are used during synthesis.

Original languageEnglish (US)
Pages (from-to)12658-12668
Number of pages11
JournalJournal of Physical Chemistry C
Volume121
Issue number23
DOIs
StatePublished - Jun 15 2017

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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