A N-doped porous carbon derived from deep eutectic solvent for adsorption of organic contaminants from aqueous or oil solution

Abstract

Porous N-doped carbon material (NCM) derived from deep eutectic solvent (DES) is successfully prepared.

Emerging applications of deep eutectic solvents in the preparation and functionalization of biomass-derived carbonaceous materials: challenges and prospects

“…31,99 Fig. 7 24,45,63,71 and pyrolysis of biomass with DESs, 26,78,[100][101][102] and functionalized by the impregnation of a pristine BCM with a DES, have been developed for the adsorption of heavy metals, 71,79,88 dyes, 63,66,74 antibiotics, 71,85 drugs 86,103 and surfactants 71 from solutions. These BCMs demonstrated excellent properties in the adsorption and reduction of heavy metals (i.e., Pb, Cr(VI) and U(VI)).…”

“…102 In addition to the adsorption of heavy metals, other organic pollutants such as dyes, pharmaceutical waste, and phenolic surfactants can also be adsorbed and degraded by the BCMs produced with the favor of DESs. 63,66,74,85,86,103 Specifically, Manohara et al first prepared a eutectic system (ES) by combining ethylene glycol (EG), glucose, and ChCl in a molar ratio of 1 : 1 : 1. They then added aluminum nitrate hydrate and processed it at various STC temperatures and durations to produce BCMs enriched with surface OFGs.…”

“…10). 71 Besides the preparation of the BCM through the direct STC of a DES (as the carbon precursor), 66,71 the BCM prepared by direct pyrolysis of a glucose-containing DES, 103 the BCM modified by solvothermal treatment of biochar in a DES, 105 the BCM functionalized by impregnation of magnetic porous carbon with a ChCl-Gly DES, 86 the BCM prepared by successive STC of biomass in a DES and physical activation, 74 and the BCM prepared by the STC of biomass in a DES 63 were developed for the adsorption of organic pollutants. However, some of these applications were not competitive compared to the existing adsorbents.…”

Plant-Waste-Derived Sorbents for Nitazoxanide Adsorption

“…The mostly broad pores were noted in BCS (95.41 nm). Porosity is a key parameter in adsorption where pore-filling or sieving effects are considered [12]. The highest ash content e.g., presence of inorganics was noted in BCR, which contained also K (4.05 wt%), Ca (1.35 wt%), Mg (0.76 wt%), Fe (0.38 wt%), S (0.24 wt%), Si (0.14 wt%), Cl (0.14 wt%), and P (0.09 wt%) that was evidenced from SED-EDS mapping.…”

“…This is evidence that novel effective methods for its removal are required. Among others, adsorption seems to be a promising removal method [11][12][13] due to its low cost, short time, and the possibility of using different wastes for different products in order to meet the requirements of the circular economy. Additionally, the transformation of waste towards precious products satisfies Sustainable Development Goals.…”