Effect of Pore Size Distribution and Amination on Adsorption Capacities of Polymeric Adsorbents

Abstract

Polymeric adsorbents with different properties were synthesized via suspension polymerization. Equilibrium and kinetics experiments were then performed to verify the adsorption capacities of the resins for molecules of various sizes. The adsorption of small molecules reached equilibrium more quickly than the adsorption of large molecules. Furthermore, the resins with small pores are easy to lower their adsorption capacities for large molecules because of the pore blockage effect. After amination, the specific surface areas of the resins decreased. The average pore diameter decreased when the resin was modified with either primary or tertiary amines, but the pore diameter increased when the resin was modified with secondary amines. The phenol adsorption capacities of the amine-modified resins were reduced because of the decreased specific area. The amine-modified resins could more efficiently adsorb reactive brilliant blue 4 owing to the presence of polar functional groups.

Noble-metal-free single-phase Co3V2O8with the structural integrity of nanofibers for the selective detection of ascorbic acid

“…The surface area and pore size distribution of an electrocatalyst are important factors that influence the adsorption kinetics employed to measure the diffusion of the adsorbate into the pores. 36,37 surface area of 14.882 m 2 g −1 with a superior total pore volume of 0.1323 cm 3 g −1 as compared with previously reported Co 3 V 2 O 8 nanoparticles. 29 Due to the characteristic feature of mesopores, the prepared Co 3 V 2 O 8 has evenly distributed pore structures on its surface.…”

“…The surface area and pore size distribution of an electrocatalyst are important factors that influence the adsorption kinetics employed to measure the diffusion of the adsorbate into the pores. 36,37 Fig. 5 illustrates the specific Brunauer–Emmett–Teller (BET) surface area and total pore volume of the Co 3 V 2 O 8 nanofibers, affording a specific surface area of 14.882 m 2 g −1 with a superior total pore volume of 0.1323 cm 3 g −1 as compared with previously reported Co 3 V 2 O 8 nanoparticles.…”

Application of Amberlite IRA 402 Resin Adsorption and Laccase Treatment for Acid Blue 113 Removal from Aqueous Media

“…The specific BET surface area and average pore diameter of Amberlite 402 IRA is 2.45 m 2 /g and 1.89 nm allowing retention of high-molecular-weight compounds as reported [47]. After amination, the specific surface areas of the resins and the average pore diameter decreases [48].…”

Comparative study of solvothermal and catalytic solvothermal carbonization of rice husk for Fe(iii), Zn(ii), Cu(ii), Pb(ii) and Mn(ii) adsorption, kinetics, surface chemistry and reaction mechanism

“…Pores with high volume can adsorb a large amount of pollutants with longer retention time, while pores with smaller volume are filled with pollutants faster and lose the adsorption capacity faster. 47 Table 6 presents the pore diameters in the 7.51–14.77 nm range for all solvochars. Regarding pore volume, RE had the highest pore volume of ∼0.16 cm 3 g −1 followed by RI of ∼0.12 cm 3 g −1 .…”