Nitrogen-rich covalent organic polymer-hybridized CuFe2O4-based magnetic nanoparticles for efficient iodine adsorption and Cr(VI) reduction. / Askari, Saeed; Mehdi Khodaei, Mohammad; Benassi, Enrico.
In: Inorganic Chemistry Communications, Vol. 169, 113136, 11.09.2024.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Nitrogen-rich covalent organic polymer-hybridized CuFe2O4-based magnetic nanoparticles for efficient iodine adsorption and Cr(VI) reduction
AU - Askari, Saeed
AU - Mehdi Khodaei, Mohammad
AU - Benassi, Enrico
PY - 2024/9/11
Y1 - 2024/9/11
N2 - In this study, a magnetic covalent organic polymer nanohybrid, CuFe2O4@CGP, was prepared by a reaction between cyanuric chloride and guanidinium chloride in the presence of CuFe2O4, and fully characterized. The CuFe2O4@CGP nanohybrid showed promising activity for the adsorption of I2 in cyclohexane compared to previous works with a theoretical maximum adsorption capacity (Qmax) of 769.23 mg/g and a removal efficiency of 98.31 % of I2 which was significantly higher than that of bare CuFe2O4 due to a conjugated π-electron system, N–H-containing and surface –OH groups. The pseudo-second-order kinetic model and the Langmuir model provided a better fit for I2 adsorption over CuFe2O4@CGP. The process of I2 adsorption on the CuFe2O4@CGP surface was also investigated by quantum chemical calculations. Furthermore, the CuFe2O4@CGP acted as a bifunctional catalyst for the efficient decomposition of HCOOH to H2 and CO2 and the reduction of highly toxic Cr(VI) to low-toxic Cr(III) in an aqueous medium. The CuFe2O4@CGP nanohybrid was more efficient than the bare CuFe2O4 NPs with a higher rate constant (0.36 min−1) and activity parameter (0.30 s−1 g−1). The CuFe2O4@CGP nanohybrid showed recoverability and reusability up to six- and five times for the adsorption/desorption process and reduction, respectively.
AB - In this study, a magnetic covalent organic polymer nanohybrid, CuFe2O4@CGP, was prepared by a reaction between cyanuric chloride and guanidinium chloride in the presence of CuFe2O4, and fully characterized. The CuFe2O4@CGP nanohybrid showed promising activity for the adsorption of I2 in cyclohexane compared to previous works with a theoretical maximum adsorption capacity (Qmax) of 769.23 mg/g and a removal efficiency of 98.31 % of I2 which was significantly higher than that of bare CuFe2O4 due to a conjugated π-electron system, N–H-containing and surface –OH groups. The pseudo-second-order kinetic model and the Langmuir model provided a better fit for I2 adsorption over CuFe2O4@CGP. The process of I2 adsorption on the CuFe2O4@CGP surface was also investigated by quantum chemical calculations. Furthermore, the CuFe2O4@CGP acted as a bifunctional catalyst for the efficient decomposition of HCOOH to H2 and CO2 and the reduction of highly toxic Cr(VI) to low-toxic Cr(III) in an aqueous medium. The CuFe2O4@CGP nanohybrid was more efficient than the bare CuFe2O4 NPs with a higher rate constant (0.36 min−1) and activity parameter (0.30 s−1 g−1). The CuFe2O4@CGP nanohybrid showed recoverability and reusability up to six- and five times for the adsorption/desorption process and reduction, respectively.
KW - Catalytic reduction
KW - Covalent organic polymer
KW - CuFe2O4 MNPs
KW - DFT
KW - Environmental treatment
KW - Iodine adsorption and release
UR - https://www.mendeley.com/catalogue/5fb302a8-355f-3549-951e-5d63865a04d8/
U2 - 10.1016/j.inoche.2024.113136
DO - 10.1016/j.inoche.2024.113136
M3 - Article
VL - 169
JO - Inorganic Chemistry Communication
JF - Inorganic Chemistry Communication
SN - 1387-7003
M1 - 113136
ER -
ID: 60780053