研究目的
Investigating the synthesis mechanism of atomically monodisperse Ag29 nanoclusters.
研究成果
The synthesis of Ag29 clusters involves rapid nucleation and growth to larger species, followed by size focusing to Ag29. Oxygen plays a crucial role in the etching process. The study provides insights into the synthesis mechanism of noble metal clusters, particularly Ag clusters.
研究不足
The initial nucleation and growth stage could not be studied in detail due to rapid reaction kinetics. The synthesis process in the liquid jet setup for XANES was unsuccessful, possibly due to exposure to X-rays and saturation of the synthesis solution with He.
1：Experimental Design and Method Selection:
The synthesis involves the reduction of AgNO3 in the presence of dithiolate ligands using NaBH4 as a reducing agent. Optical spectroscopy, mass spectrometry, and X-ray spectroscopy were used to study the synthesis process.
2：Sample Selection and Data Sources:
AgNO3 was reduced in the presence of dithiolate ligands in aqueous solution.
3：List of Experimental Equipment and Materials:
UV-Vis spectrometers (Perkin Elmer Lambda 950, Perkin Elmer Lambda 40), electrospray ionization time-of-flight (ESI-ToF) instrument, X-ray absorption spectroscopy equipment.
4：Experimental Procedures and Operational Workflow:
The synthesis process was monitored over time using the aforementioned techniques to observe the formation and evolution of Ag29 clusters.
5：Data Analysis Methods:
EXAFS analysis was done using VIPER, Athena, and Artemis software packages. XANES analysis involved comparison to reference compounds and calculations using FDMNES and FEFF.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
