从金属有机骨架 HKUST-1 内的金羰氯化物形成金纳米簇。

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

机构信息

Karlsruhe Institute of Technology, Institute of Functional Interfaces (IFG), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.

Karlsruhe Institute of Technology, Karlsruhe Nano Micro Facility (KNMF), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.

出版信息

Molecules. 2023 Mar 17;28(6):2716. doi: 10.3390/molecules28062716.

DOI:10.3390/molecules28062716

PMID:36985688

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10051452/

Abstract

Gas-phase infiltration of the carbonylchloridogold(I), Au(CO)Cl precursor into the pores of HKUST-1 ([Cu(BTC)(HO)], 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 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@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).

摘要

气相渗透羰基氯金（I），Au（CO）Cl 前体进入 HKUST-1（[Cu（BTC）（HO）]，Cu-BTC） SURMOFs（表面安装的金属有机骨架; BTC = 苯-1,3,5-三甲酸酯）通过与 Cu 上的水配体水解，导致 MOF 内的 Au（CO）Cl 分解。在 HKUST-1 基质的中孔中形成具有平均原子数 x ≈ 5 的小 Au 簇。这些金纳米簇均匀分布且结晶有序，粉末 X 射线衍射特征的模拟结果对此进行了支持。Au@HKUST-1 进一步通过扫描电子显微镜（SEM）和红外反射吸收（IRRA）以及拉曼光谱、飞行时间二次离子质谱（ToF-SIMS）、X 射线光电子能谱（XPS）和电感耦合等离子体发射光谱（ICP-OES）进行了表征。