TY  - BOOK
AU  - Khajavian,M.
AU  - Kaviani,S.
AU  - Piyanzina,I.
AU  - Tayurskii,D.A.
AU  - Nedopekin,O.V.
AU  - & Haseli,A.
TI  - Amide-functionalized g-C3N4 nanosheet for the adsorption of arsenite (As3+): process optimization, experimental, and density functional theory insight
T2  - Colloids and Surfaces A: Physicochemical and Engineering Aspects, 690, 133803, 2024
KW  - NANOSHEET
KW  - FUNCTIONALIZATION
KW  - HEAVY METALS
KW  - ADSORPTION
KW  - DENSITY FUNCTIONAL THEORY
N1  - Artículo
N2  - Long-term exposure to arsenite (As3+) from water resources poses a global health concern. In the current study, g-C3N4 (C3N4) nanosheets were functionalized with amide groups to increase their adsorption capacity to remove As3+ from aqueous environments. Experimental assessments and density functional theory (DFT) calculations have been utilized to explore the adsorption characteristics of As3+ on C3N4 and amide-functionalized C3N4 (AC3N4) nanosheets. The central composite design (CCD) method unveiled the optimal operating conditions, including a pH level of 6.5, an adsorbent mass of 0.12 g, and an As3+ initial concentration of 250 mg/L. The AC3N4 nanosheet showed a higher adsorption capacity (205.8 mg/g) than the pristine C3N4 nanosheet (27.7 mg/g). The experimental data demonstrated conformity with the Freundlich isotherm in the adsorption study. DFT calculations revealed that the As3+/AC3N4 complex exhibited a higher adsorption energy (-40.98 eV) and stronger covalent bonds than the As3+/C3N4 complex (28.34 eV). The outstanding adsorptive properties of AC3N4 present it as an effective adsorbent for eliminating heavy metal ions from water, highlighting its capability for environmental remediation
UR  - https://drive.google.com/file/d/1pKDfC1NCHMY5i3lNwehCbD5M9Sn-3uGx/view?usp=drive_link
ER  -