期刊
MOLECULES
卷 28, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/molecules28062716
关键词
goldcarbonyl chloride; carbonylchloridogold(I); Au(CO)Cl; gold nanoclusters; metal-organic frameworks; HKUST-1; Cu-BTC; SURMOF
Gas-phase infiltration of the carbonylchloridogold(I), Au(CO)Cl precursor into the pores of HKUST-1 SURMOFs leads to the formation of ordered gold nanoclusters within the MOF matrix. These nanoclusters are homogeneous and distributed in the medium-sized pores of HKUST-1. The characterization of Au-x@HKUST-1 was performed using various techniques including SEM, IRRA, Raman spectroscopy, ToF-SIMS, XPS, and ICP-OES.
Gas-phase infiltration of the carbonylchloridogold(I), Au(CO)Cl precursor into the pores of HKUST-1 ([Cu-3(BTC)(2)(H2O)(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 approximate to 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).
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