Advancements in the Synthesis of Building Block Materials: Experimental Evidence and Modeled Interpretations of the Eﬀect of Na and K on Imogolite Synthesis
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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.
Fondo Nacional de Investigaciones Cientificas y Tecnologicas (FONDECYT, Chile) 11130157 1160639 1130272 3140526 CEDENNA through Financiamiento Basal para Centros Cientificos y Tecnologicos de Excelencia FB0807 NSF DMR 1609107 Laboratory Directed Research and Development (LDRD) program of Sandia National Laboratories U.S. Department of Energy's National Nuclear Security Administration DE-AC04-94AL85000
Artículo de publicación ISIArtículo de publicación SCOPUS
Quote ItemJ. Phys. Chem. C 2017, 121, 12658−12668
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