Surface modification of ferrite nanoparticles with dicarboxylic acids for the synthesis of 5-hydroxymethylfurfural: a novel and green protocol

Abstract

5-Hydroxymethylfurfural (5-HMF) has been synthesized under solvent free conditions using surface modified ferrite nanoparticles. The flexible ligand modified ferrites showed higher activity than rigid modified ferrites.

Remarkable Confinement Effect of Nanofiber in Carbon Nanotubes for Dehydrogenative Coupling of Alcohols with α‐Diaminobenzene: A Route for the Synthesis of Benzimidazoles

“…In Figure A (e), MNF‐1/CNT has three phases. The plane at (002) is for carbon template of CNT and the plane (220), (311), (222), (400), (422), (511) and (440) for MNPsand at the peak at low Bragg's angles at 21.24 and 23.62 corresponds to carbon of ligands. Further, the grain size of MNF‐1 was identified to be approximately 11 nm, which is determined by Debye Scherer equation using (002) plane.…”

Long‐Term Colloidally Stable Aqueous Dispersions of ≤5 nm Spinel Ferrite Nanoparticles

“…[19] Shaikh et al modified their ferrite nanoparticles such, that they direct reaction pathways in solvent-free catalysis. [25] In ferrofluids and biomedical applications very high colloidal and long-term stability [11,27] of aqueous nanoparticle dispersions is required. Additionally, colloidal stability of magnetic nanoparticles even at high concentrations enables the adjustment of the magnetic response of such dispersions to a very high level.…”

“…Shaikh et al. modified their ferrite nanoparticles such, that they direct reaction pathways in solvent‐free catalysis [25] …”

“…Such a ligand-exchange can either be performed post-synthetic [22,24] or in a one-pot strategy. [19] In general, any desired functionality can be created, if the capping agent possesses a moiety with binding affinity to the nanoparticle surface, such as carboxyls, enediols [19,25] or phosphonic acids. [24,26] For iron oxide nanoparticles, Qu et al identified various stabilizers, which in turn were accessible for further bioconjugation chemistry to load the nanoparticles with e. g. drugs, antibodies or cancer cells.…”

“…Such a ligand‐exchange can either be performed post‐synthetic [22,24] or in a one‐pot strategy [19] . In general, any desired functionality can be created, if the capping agent possesses a moiety with binding affinity to the nanoparticle surface, such as carboxyls, enediols [19,25] or phosphonic acids [24,26] . For iron oxide nanoparticles, Qu et al.…”