期刊
ACS APPLIED NANO MATERIALS
卷 5, 期 3, 页码 3188-3193出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.2c00389
关键词
cross-coupling; homogeneous catalysis; Pd nanoclusters; Pd(II) reduction; UV-vis spectroscopy; X-ray photoelectron spectroscopy; X-ray absorption spectroscopy
资金
- National Science Foundation Division of Chemistry [1800316]
- U.S. DOE [DE-AC02-06CH11357]
- Canadian Light Source
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1800316] Funding Source: National Science Foundation
This research reports the formation of Pd-nanocluster catalysts and their involvement in ligand-free Suzuki-Miyaura reactions. The catalysts are formed by leaching spherical Pd(0) nanoparticles with an average diameter of about 3 nm, and they are soluble in water. The reduction of Pd(II) is induced by ethanol and enhanced by potassium hydroxide.
This Letter reports Pd-nanocluster catalysts and their formation in ligand-free Suzuki-Miyaura reactions with palladium(II) nitrate as a precatalyst. The catalysts are water-soluble neutral Pd tetramer and trimer in their singlet electronic states, as identified by UV-vis absorption spectroscopy, and are formed by leaching of spherical Pd(0) nanoparticles with an average diameter of about 3 nm. The Pd(0) nanoparticles are produced by reducing palladium(II) nitrate and characterized with transmission electron microscopy and Pd K-edge extended X-ray fine structure spectroscopy. The Pd(II) reduction is induced by ethanol, enhanced by potassium hydroxide, and monitored with X-ray photoelectron spectroscopy.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据