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Formation of Gold Nanoclusters from Goldcarbonyl Chloride inside the Metal-Organic Framework HKUST-1

Hassan, Zeinab Mohamed 1; Guo, Wei 1; Welle, Alexander ORCID iD icon 1,2; Oestreich, Robert; Janiak, Christoph; Redel, Engelbert 1
1 Institut für Funktionelle Grenzflächen (IFG), Karlsruher Institut für Technologie (KIT)
2 Karlsruhe Nano Micro Facility (KNMF), Karlsruher Institut für Technologie (KIT)

Abstract:

Gas-phase infiltration of the carbonylchloridogold(I), Au(CO)Cl precursor into the pores of HKUST-1 ([Cu$_3$(BTC)$_2$(H$_2$O)$_2$], Cu-BTC) SURMOFs (surface-mounted metal-organic frameworks; BTC = benzene-1,3,5-tricarboxylate) leads to Au(CO)Cl decomposition within the MOF through hydrolysis with the aqua ligands on Cu. Small Au$_x$ clusters with an average atom number of x ≈ 5 are formed in the medium-sized pores of the HKUST-1 matrix. These gold nanoclusters are homogeneously distributed and crystallographically ordered, which was supported by simulations of the powder X-ray diffractometric characterization. Au$_x$@HKUST-1 was further characterized by scanning electron microscopy (SEM) and infrared reflection absorption (IRRA) as well as Raman spectroscopy, time-of-flight secondary ion mass spectrometry (ToF-SIMS), X-ray photoelectron spectroscopy (XPS) and inductively coupled plasma optical emission spectroscopy (ICP-OES).


Verlagsausgabe §
DOI: 10.5445/IR/1000157849
Veröffentlicht am 14.04.2023
Originalveröffentlichung
DOI: 10.3390/molecules28062716
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 1420-3049
KITopen-ID: 1000157849
HGF-Programm 43.33.11 (POF IV, LK 01) Adaptive and Bioinstructive Materials Systems
Erschienen in Molecules (Basel, Switzerland)
Verlag MDPI
Band 28
Heft 6
Seiten Art.-Nr.: 2716
Vorab online veröffentlicht am 17.03.2023
Schlagwörter goldcarbonyl chloride, carbonylchloridogold(I), Au(CO)Cl, gold nanoclusters, metal-organic frameworks, HKUST-1, Cu-BTC, SURMOF
Nachgewiesen in Web of Science
Dimensions
Scopus
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