APTMS-BCAD modified magnetic iron oxide for magnetic solid-phase extraction of Cu(II) from aqueous solutions

Fabrication and characterization of new Fe3O4@SiO2@TiO2-CPTS-HBAP (FST-CH) nanoparticles for photocatalytic degradation and adsorption removal of rhodamine B dye in the aquatic environment

“…The detectioned peaks in 2θ of 30.3°(220), 35.9°(311), 43.1°(400), 57.4°(511), and 62.7°(440) for Fe 3 O 4 complatelly compatible with the standard XRD spectral data ( Fig. 4 a) [ 34 , 49 , 62 ]. The XRD model ( Fig.…”

“…In the Fe 3 O 4 nanoparticle shown in Fig. 2 a, the broad peak at 3395 cm-1 represents the O–H stretching vibration [ [48] , [49] , [50] , [51] ]. Also, the peaks at 539 cm −1 and 1633 cm −1 represent the vibration band of the Fe–O bond and the vibrations of water molecules adsorbed on the nanoparticle surface, respectively [ 43 , [50] , [51] , [52] , [53] ].…”

“…The peak at 966 cm −1 represents the bending vibration of Si–OH [ 50 , 54 ]. The absorption peaks at 800 cm −1 and 1064 cm −1 represent the symmetric and asymmetric stretching vibrations of Si– O –Si, respectively [ [49] , [50] , [51] , 55 , 56 ]. These new peaks show that SiO 2 is successfully coated onto of Fe 3 O 4 surface.…”

A high-performance fluorescent hybrid material for fluorometric detection and removal of toxic Pb(ii) ions from aqueous media: performance and challenges

“…[13][14][15][16] Among these ions, lead is a highly toxic and non-degradable heavy metal that is the most toxic metal aer arsenic due to its hazardous effects on living organisms. [17][18][19] It has no benecial role in biological systems and is harmful to plants, animals, and humans. People can be exposed to lead by breathing in leadcontaminated dust particles or from food, water, and dyestuffs.…”