Fast and highly-efficient removal of methylene blue from aqueous solution by poly(styrenesulfonic acid-co-maleic acid)-sodium-modified magnetic colloidal nanocrystal clusters

Novel Smart Polymer-Brush-Modified Magnetic Graphene Oxide for Highly Efficient Chiral Recognition and Enantioseparation of Tryptophan Enantiomers

“…A larger specific surface area of MGO is available for grafting PNG chains and the subsequent tethering of β-CD molecules compared with that of Fe 3 O 4 NPs is responsible for this phenomenon. The specific surface areas of MGO and Fe 3 O 4 NPs are respectively 425.5 and 47.2 m 2 /g. , Those results confirm again the successful fabrication of MGO@PNG-CD. In addition, the chemical compositions of the functionalized GO were also characterized by elemental analysis as shown in Table .…”

Solvothermal synthesis of poly(acrylic acid) decorated magnetic molybdenum disulfide nanosheets for highly-efficient adsorption of cationic dyes from aqueous solutions

“…2a ). However, when Fe 3 O 4 NPs were loaded on the MoS 2 surface to produce MMoS 2 , which showed higher adsorption capacities for BF, MB, and CV (156.78, 73.15, and 55.33 mg g −1 , respectively) than Fe 3 O 4 /PAA-100 and the PSSMA-modified Fe 3 O 4 NPs (52.22 mg g −1 for MB) developed in our previous work, 19 indicating that the presence of MoS 2 with larger specific surface area in the nanocomposite played a crucial role in improving the dye adsorption. Electrostatic interaction between cationic dyes and few numbers of residual anionic groups (COO − ) on the material contributed small adsorption, 20,28 which were generated from incomplete reduction of –COOH groups on the surface during the solvothermal process.…”

“…1f , the strong band at around 1633 cm −1 is attributed to the bending vibration of adsorbed water molecules on the MoS 2 surface, 26 the adsorption band at 1410 cm −1 is related to the C–N groups from the C 2 H 5 NS used in the synthesis, 27 and the characteristic peak at 449 cm −1 is attributable to the Mo–S bond from the MoS 2 . 26 Besides, the peak at 534 cm −1 is due to the Fe–O stretching vibration from Fe 3 O 4 NPs, 19,28 indicating that Fe 3 O 4 NPs have been introduced on the MoS 2 to cause the formation of MMoS 2 . After binding of PAA on the MMoS 2 , the typical peak of C O stretching vibration of PAA at 1716 cm −1 is evidently observed in all the spectra of MMoS 2 /PAA samples.…”

Cation‐functionalized silica nanoparticle as an adsorbent to selectively adsorb anionic dye from aqueous solutions

“…Adsorption kinetic is thoroughly explored at the condition of 25°C and pH = 3, since they can provide important information on the adsorption rate and mechanism. The Lagergren pseudo‐first‐order , pseudo‐second‐order kinetic model , and Weber‐Morris intraparticle diffusion kinetic models were used to investigate the XO adsorption kinetics.…”

“…When c = 0, the adsorption kinetics are controlled only by intraparticle diffusion, if c ≠ 0, the adsorption process is quite complex. The values of k i and c can be calculated from the intercepts and the slopes of q t versus t 1/2 .…”