In the present era of worldwide development, despite the new study in the field of renewable energy resources, regrettably, fossil fuels still continue the major source for fulfilling the energy demands. Major human actions, such as combustion of fossil fuels, hydrogen production from hydrocarbons, and deforestation have contributed a lot towards raising the level of CO2 in the atmosphere and this severe increase in CO2 emission is considered to be the chief culprit for global warming and the climate changes. Hence, the mitigation of CO2 emission has become serious challenging issues of active research. In this context, CO2 is known as environmentally benign, inexpensive, non-flammable, abundant and renewable C1 building blocks. The catalytic conversion of CO2 into useful products has established extensive attention from a viewpoint of green and sustainable chemistry. One of the promising approach for CO2 fixation is the 100% atom-economical cycloaddition reaction between epoxides and CO2 to acquire five - member heterocyclic carbonates, which have several applications. In order to resolve this problem, our group have designed and synthesized silica based organic-inorganic hybrid magnetic nanocatalysts. The obtained nanocomposites have been characterized using various physico-chemical techniques such as FT-IR, XRD, XPS, SEM, TEM, EDS, VSM, AAS and ED-XRF. we describe the synthesis and characterization of an efficient, easily generated, new nanoscale heterogeneous material, namely Cu-ABF@ASMNPs, which can act as catalyst for conversion of CO2 under atmospheric pressure. To the best of our knowledge, this is the first report of an active and recyclable magnetic Cu nanocatalyst for the cycloaddition reaction of epoxide with CO2 using silica-coated magnetic nanoparticles as support.

Silica based magnetically retrievable nanocatalysts for CO2 fixation at ambient conditions

254th National Meeting (2017)

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