Silver nanoparticles embedded over porous metal organic frameworks for carbon dioxide fixation via carboxylation of terminal alkynes at ambient pressure

• Published in: Journal of colloid and interface science Vol. 477; pp. 220 - 229
• Main Authors: Molla, Rostam Ali, Ghosh, Kajari, Banerjee, Biplab, Iqubal, Md. Asif, Kundu, Sudipta K., Islam, Sk. Manirul, Bhaumik, Asim
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.09.2016
• Subjects: Ag nanoparticles; Alkynes; Carbon dioxide; Carboxylation of terminal alkynes; Catalytic activity; CO2 fixation; Expansion of carbon chain; Fixation; Metal organic frameworks; Nanoparticles; Nanostructure; Silver; Terminals; CO2 fixation; Ag nanoparticles; Metal organic frameworks; Expansion of carbon chain; Carboxylation of terminal alkynes; CO fixation
• ISSN: 0021-9797; 1095-7103
• DOI: 10.1016/j.jcis.2016.05.037

Ag nanoparticles has been supported over a porous Co(II)-salicylate metal-organic framework material and resulting AgNPs@CO-MOF showed excellent catalytic efficiency in the carboxylation of terminal alkynes via CO2 fixation reaction to yield alkynyl carboxylic acids under mild reaction conditions. [Display omitted] Ag nanoparticles (NPs) has been supported over a porous Co(II)-salicylate metal-organic framework to yield a new nanocatalyst AgNPs/Co-MOF and it has been thoroughly characterized by powder X-ray diffraction (XRD), thermogravimetric analysis (TGA), energy dispersive X-ray spectrometry (EDX), high-resolution transmission electron microscopy (HR-TEM), UV–vis diffuse reflection spectroscopy (DRS) and N2 adsorption/desorption analysis. The AgNPs/Co-MOF material showed high catalytic activity in the carboxylation of terminal alkynes via CO2 fixation reaction to yield alkynyl carboxylic acids under very mild conditions. Due to the presence of highly reactive AgNPs bound at the porous MOF framework the reaction proceeded smoothly at 1atm CO2 pressure. Moreover, the catalyst is very convenient to handle and it can be reused for several reaction cycles without appreciable loss of catalytic activity in this CO2 fixation reaction, which suggested a promising future of AgNPs/Co-MOF nanocatalyst.