Synthesis of magnetically recyclable Fe3O4@NiO nanostructures for styrene epoxidation and adsorption application

Selective and Recyclable Congo Red Dye Adsorption by Spherical Fe3O4 Nanoparticles Functionalized with 1,2,4,5-Benzenetetracarboxylic Acid

“…From Fig. 6A, the adsorption capacity of our material towards C.R dye was found to be 630 mg/g, which is significantly higher than the earlier reported Fe 3 O 4 based sorbents listed in Table S3 in ESI [38][39][40][45][46][47][62][63][64] . www.nature.com/scientificreports www.nature.com/scientificreports/ The significantly higher adsorption capacity value for Fe 3 O 4 @BTCA supports our initial expectations of achieving high adsorption capacity through immobilization of BTCA on the Fe 3 O 4 surface by enhancing the surface area and making strong H-binding sites available to promote the dye adsorption.…”

“…Besides electrostatic interactions as applicable to the cases mentioned above, the adsorption of dye is also actively facilitated by hydrogen bonding, which depends on functional groups and active coordination sites present on the solid surface. Thus, to achieve higher adsorption capacity, many researchers have focused their efforts on the functionalization of the Fe 3 O 4 surface by introducing organic chelate groups [38][39][40][41][42] and metal oxide [43][44][45][46][47] . For example, polyaniline (PANI) and carbon nanotube (CNT) functionalized Fe 3 O 4 NPs were reported by Zhao et al, which showed a moderate value of adsorption capacity (417.38 mg/g) 40 .…”

Development and characterisation research on SnO2‐Al2O3‐NiO/SO42− catalysed epoxidation of soybean oil under hydraulic cavitation

“…NiO is a promising transition metal oxide with many potential applications in various fields, including catalytic olefin epoxidation, owing to its excellent chemical stability and environmental friendliness. [12,14,15] Al 2 O 3 is a traditional metal oxide that has been reported to be an active multiphase catalyst for olefin epoxidation by H 2 O 2 . The active aluminium atoms on the catalyst surface can interact with H 2 O 2 to form aluminium hydroperoxide intermediates, which transfer an oxygen atom to the double bond coordinated to aluminium, affording the epoxide and the catalytically active fragment.…”

Magnetically Reusable MnFe2O4 Nanoparticles Modified with Oxo‐Peroxo Mo (VI) Schiff‐Base Complexes: A High Efficiency Catalyst for Olefin Epoxidation under Solvent‐Free Conditions

“…These problems may be solved by using heterogeneous catalysis by supporting the catalyst on zeolite, polymers clays, metal oxide materials and other nanomaterials where separation from the reaction mixture is mainly based on filtration or centrifugation. Magnetic separation using magnetic catalysts has become highly appealing for highly efficient catalyst recovery ,…”