• Toimil-Molares, Maria Eugenia
• Lan, Mu
• Wagner, Michael
• Wang, Hongyan
• Ulrich, Nils
• Trautmann, Christina
• Kopold, Peter
• Tzifas, Ioannis

Abstract

<jats:p>We explore the conversion of free-standing Cu nanowire arrays produced by electrodeposition in polymer etched ion-track membranes into metal-organic frameworks KHUST-1 by electrochemical oxidation. HKUST-1 particles are built up when the as-formed Cu<jats:sup>2+</jats:sup> ions bind to the benzene tricarboxylic acid ligands (BTC<jats:sup>3−</jats:sup>) in the electrolyte solution. The morphology and crystallinity of the samples at different transformation stages are investigated by scanning and transmission electron microscopy. X-ray diffraction data taken at different conversion times confirm the formation of HKUST-1 particles. The conversion process resulted in octahedral structures of several <jats:italic>μ</jats:italic>m in size. Comparison of the Raman spectra with the band positions derived from density functional theory (DFT) calculations, suggests that vibrations involving Cu atoms appear only below 490 cm<jats:sup>−1</jats:sup> wavenumbers and involve the entire HKUST-1 lattice rather than vibrations of single bonds.</jats:p><jats:p><jats:inline-formula><jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="jesacbba4-ga.jpg" xlink:type="simple" /></jats:inline-formula></jats:p>

Topics

• density
• morphology
• polymer
• x-ray diffraction
• theory
• transmission electron microscopy
• density functional theory
• electrodeposition
• crystallinity