Patent ID: 11969708
Assignee: KING SAUD UNIVERSITY
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  E | IPC B  C  E

Claim 4:
5. The method for preparing nanoparticles modified by a cardanol imidazolium ionic liquid as recited in claim 1, wherein the nanoparticles comprise functionalized silica nanoparticles, the method comprising:
aging silica (SiO2) nanoparticles with a solution of a cardanyl imidazolium ionic liquid selected from the group consisting of a cardenyl polyethoxy imidazolium ionic liquid (CEOIm), a dicardenoxy imidazolium ionic liquid (DCIm), a dicardnyl tri-imidazolium ionic liquid (DCTIm), and a combination thereof in toluene, whereby the cardanyl imidazolium ionic liquid diffuses and adsorbs on a surface of the silica nanoparticles;
decanting supernatant and collecting the functionalized silica nanoparticles; and
separating the functionalized silica nanoparticles by centrifugation.