Preparation of catalytically active Au nanoparticles by sputter deposition and their encapsulation in metal-organic framework of Cu3(BTC)2

Publication date: Available online 5 December 2019Source: Materials LettersAuthor(s): Kiyoshi Matsuyama, Tomohiro Tsubaki, Takafumi Kato, Tetsuya Okuyama, Hiroyuki MutoAbstractGold nanoparticles (Au NPs) in liquid poly (ethylene glycol) (PEG) were prepared via sputter deposition. This is an easy and simple preparation method for Au NPs , and does not require a chemical reaction or additional stabilizers. A metal-organic framework (MOF), Cu3(BTC)2 (BTC: 1,3,5-benzenetricarboxylic acid), was synthesized in the liquid PEG containing the Au NPs to obtain Au@Cu3(BTC)2. Liquid PEG acted as the capture medium for sputter deposition and reaction medium for the formation of Au@Cu3(BTC)2. Images obtained through scanning transmission electron microscopy (STEM) clearly demonstrated that the Au NPs were successfully immobilized inside the pores of Cu3(BTC)2. The resulting Au@Cu3(BTC)2 exhibited high activity for CO oxidation.Graphical abstract
Source: Materials Letters - Category: Materials Science Source Type: research