Sb(III) removal from aqueous solution by a novel nano-modified chitosan (NMCS)

Bioinspired synthesis of fiber-shaped silk fibroin-ferric oxide nanohybrid for superior elimination of antimonite

“…3 b). This is distinguishing to the reported previous works that the removal of antimonite species was generally independent on pH values due to the low electrostatic interactions involving the neutral form of H 3 SbO 3 [ 2 , 7 , 30 ]. The decline of the removal capacity was due to the possible hydrolysis reactions for part of the amino and carboxyl groups onto silk fibroins at a relatively acid or alkaline conditions.…”

Insights into simultaneous adsorption and oxidation of antimonite [Sb(III)] by crawfish shell-derived biochar: spectroscopic investigation and theoretical calculations

“…The specific objectives of this study were to: (1) determine the adsorption capacity of CSB for Sb(III) under different conditions (i.e., reaction time, initial adsorbate concentration, solution pH, ionic strength, and co-existing substances); (2) unravel the Sb(III) adsorption mechanism using multiple advanced 1 Introduction Antimony (Sb) is a metalloid that belongs to Group VA of the periodic table, and the element exhibits chemical and bio-toxicological characteristics similar to arsenic (As), where oxyanions of both the elements might transform between trivalent and pentavalent species under variable redox conditions (Nishad and Bhaskarapillai 2021;Bolan et al 2022b). Antimony exists in four oxidation states (-III, 0, +III, and + V) of which Sb(III) and Sb(V) are the prevalent forms in the environment, with Sb(III) 10-time more toxic than Sb(V) (Xiong et al 2020). In recent decades, natural biogeochemical release and anthropogenic activities such as mining, metallurgy, and widespread use of Sb-containing products (e.g., pigments, batteries, and flame retardants) have triggered the Sb contamination in the environment worldwide (Wei et al 2020;Chen et al 2022b).…”

Optimization of the adsorption and removal of Sb(iii) by MIL-53(Fe)/GO using response surface methodology

“…, they move toward lower frequencies. This may be due to the replacement of H on the hydroxyl functional group by Sb( iii ), 27 the –C O group vibration stretching absorption peak may be 1651 cm −1 , and the surface of the material contains –COOH group 28 After adsorption, it shifted to 1578 cm −1 . The characteristic peak produced by the –OH bond at 1099 cm −1 shifted to 1107 cm −1 after adsorption.…”