Enhanced removal of indigo carmine dye from aqueous solutions using polyaniline modified partially reduced graphene oxide composite DOI Creative Commons

Saadia M. Waly,

Ahmad M. El-Wakil,

Mohamed M. Waly

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: May 3, 2025

Abstract In this study, graphene oxide (GO) nanosheets were chemically modified by attaching polyaniline (PAN) nanoparticles to their surfaces, creating a partially reduced composite (PAN@PRGO). This synthesized PAN@PRGO nanocomposite serves as an innovative and highly effective adsorbent for removing indigo carmine (IC) dye from water. The morphology chemical composition of analyzed using various techniques, including scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), photoelectron (XPS), confirming the successful grafting PAN onto GO surface. Batch adsorption tests showed that has outstanding capacity dye, achieving 490.0 mg g −1 at pH 5.0 298 K. is notably higher than alone (317.25 ) exceeds other materials reported in literature. Additionally, demonstrated 100% removal efficiency IC concentrations up 300 L . experimental data closely matched Langmuir isotherm model pseudo-second-order kinetic model, suggesting electron-sharing interactions between contribute mechanism. adsorbed was recoverable 0.1 M NaOH solution, with retaining near-100% even after five adsorption–desorption cycles. These results indicate promising, reusable industrial wastewater.

Language: Английский

Efficacious Removal of Organic Contaminants from Water Using a Novel CoO–NiO@MgAl2O4 Nanocomposite DOI Creative Commons
Sondos Abdullah J Almahmoud,

Soad S. Alzahrani,

Babiker Y. Abdulkhair

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Herein, novel MgAl2O4-based quadruple nanocomposites containing different contents of Co/Ni bimetallic doping were synthesized employing gelatin as a green capping agent. Typically, MgAl2O4 (MgAl2O4-1), 5% NiO-5% CoO@MgAl2O4 (MgAl2O4-2), 2.5% CoO-5% NiO@MgAl2O4 (MgAl2O4-3), and CoO-2.5% (MgAl2O4-4) via one-pot method. The prepared characterized by transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), diffraction (XRD), surface analysis, Fourier transform infrared (FTIR) spectroscopy. MgAl2O4-1, MgAl2O4-2, MgAl2O4-3, MgAl2O4-4 exhibited areas 75.4, 118.4, 141.1, 123.0 m2 g-1, respectively, possessed qt values 46.8, 60.9, 72.4, 60.2 mg toward the indigo carmine (INCR) dye. INCR sorption onto followed pseudo-second-order model, liquid film diffusion model controlled nanocomposites. MgAl2O4-3 was selected best sorbent for eliminating INCR, it enhanced performance at pH 6.0. value increased proportionally with concentration (20 to 100 L-1), increasing temperature affected positively, indicating endothermic sorption. Langmuir fitted among tested isotherm models, predicted maximum adsorption capacity 181.0 g-1. removing from tap water, groundwater, seawater 313 K, showed an average efficiency 97.1%, standard deviation 2.4%.

Language: Английский

Citations

0
Highly efficient and rapid adsorption of dyes by hollow mesoporous carbon spheres DOI

Yueyue Lu,

Qingxin Wu,

Xiangfa Meng

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132746 - 132746

Published: March 1, 2025

Language: Английский

Citations

0
Enhanced removal of indigo carmine dye from aqueous solutions using polyaniline modified partially reduced graphene oxide composite DOI Creative Commons

Saadia M. Waly,

Ahmad M. El-Wakil,

Mohamed M. Waly

et al.

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: May 3, 2025

Abstract In this study, graphene oxide (GO) nanosheets were chemically modified by attaching polyaniline (PAN) nanoparticles to their surfaces, creating a partially reduced composite (PAN@PRGO). This synthesized PAN@PRGO nanocomposite serves as an innovative and highly effective adsorbent for removing indigo carmine (IC) dye from water. The morphology chemical composition of analyzed using various techniques, including scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), photoelectron (XPS), confirming the successful grafting PAN onto GO surface. Batch adsorption tests showed that has outstanding capacity dye, achieving 490.0 mg g −1 at pH 5.0 298 K. is notably higher than alone (317.25 ) exceeds other materials reported in literature. Additionally, demonstrated 100% removal efficiency IC concentrations up 300 L . experimental data closely matched Langmuir isotherm model pseudo-second-order kinetic model, suggesting electron-sharing interactions between contribute mechanism. adsorbed was recoverable 0.1 M NaOH solution, with retaining near-100% even after five adsorption–desorption cycles. These results indicate promising, reusable industrial wastewater.

Language: Английский

Citations

0