Cu immobilized on Fe۳O۴@Biochar nanoparticles: a novel, inexpensive andhighly efficient heterogeneous magnetic nanocatalyst for C-O couplingreactions in green media

Carbon-heteroatom cross-coupling reactions based on transition metal catalyst systems haveTransition metals include Pd, Cu, Co, Fe, Ag, Au, and Ni allow chemists to catalyze cross-couplingreactions, however, using affordable and friendly environment designed catalytic systems havemore attentions among scientists, lastly [۱, ۲]. Biochar as the only carbon neutral alternative, hasthe unique chemical structure containing tailored surface functional groups and large surface area.The selection of biochar as a surface will be ideal for the preparation of heterogeneous catalysis[۳]. magnetic modification can be more suitable technique to separate them by applying a magnet,make long centrifugation and filtration steps unnecessary [۴]. Herein we report the synthesis of amagnetically separable core-shell-like Fe۳O۴@Biochar-Cu (MBC@BTT-Cu(II)) as anenvironmentally friendly heterogeneous catalyst. The as-prepared nanocatalyst was wellcharacterized by various techniques such as FT-IR, XRD, BET, FE-SEM, EDX, TGA, VSM, ICPOESand elemental analysis and evaluated for the C-O coupling reactions in DES as green solvent.Also, the separation of the nanocatalyst was easily performed by an external magnet and appliedagain for eight fresh runs with no considerable loss of catalytic activity.

کلیدواژه ها:

Heterogeneous Catalysis ، Magnetic Biochar Nanoparticles ، C-O Coupling Reactions.