Functional group-rich hyperbranched magnetic material for simultaneous efficient removal of heavy metal ions from aqueous solution

Polyacrylic acid/carboxymethyl cellulose/activated carbon composite hydrogel for removal of heavy metal ion and cationic dye

“…The effective information that can be obtained from Fig. 3b is that as the mass of the adsorbent increases from 10 to 60 mg, the amount of pollutants adsorbed continues to decrease, obviously, the adsorption sites were not fully utilized in the case of high amount of adsorbent used, which may be caused by the agglomeration phenomenon that occurs when most adsorbents are in solution (Wang et al 2020). In short, the use of excessive adsorbent in the actual sewage treatment cannot play its role well.…”

Efficient and selective removal of Pb(ii) from aqueous solution by a thioether-functionalized lignin-based magnetic adsorbent

“… 62 Meanwhile, the Δ G 0 values decreased gradually with the increase of temperature, indicating that the driving force in the adsorption was positively correlated with the spontaneous degree range. 63 The positive value of Δ H 0 proved that the adsorption was endothermic in nature. Additionally, the positive value of Δ S 0 suggested an increasing freedom degree at the solid–liquid interface.…”

Polyacrylonitrile/Crown Ether Composite Nanofibres With High Efficiency for Adsorbing Li(I): Experiments and Theoretical Calculations

“…The B3LYP (Ramos-Sanchez et al, 2013;Zhu et al, 2019) hybrid functional is very reliable in dealing with electron exchange and correlation in a wide range of molecular systems, the initial structure of PAN-CE@SiO 2 and Li(Ι) composites was optimised by 6-31+G (d, p) basis sets of the B3LYP hybrid functional. In addition, the natural bond orbit (NBO) of the composites was calculated by using 6-31+G (d, p) (Wang et al, 2020) basis sets of the B3LYP hybrid functional, which allowed further analysis of the mechanisms of interaction between functional groups in PAN-CE@SiO 2 and Li(I). The details are provided in Supporting Information (Supplementary Text S4).…”