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Sustainable valorization of sugarcane bagasse into a hierarchical γ-Al2O3/activated carbon composite: synergistic adsorption of cationic dyes
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DOI：10.1016/j.mtcomm.2026.115596.png)
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Abstract
En 中文
The development of sustainable hybrid adsorbents is crucial for advancing adsorption-based water treatment technologies. In this work, a hierarchical AC/γ-Al2O3 composite derived from sugarcane bagasse was synthesized via a mild H2SO4-assisted activation process at 120 °C, providing a low-energy alternative to conventional high-temperature activation routes. The resulting material exhibited a hierarchical porous structure and a high specific surface area of 1740 m²/g.
Keywords:
AC
Activated Carbon
AC–SCB
Activated Carbon from Sugarcane Bagasse
SCB
Sugarcane Bagasse
γ-Al2O3
Gamma alumina
BET
Brunauer–Emmett–Teller method
BJH
Barrett–Joyner–Halenda method
MB
Methylene Blue
FTIR
Fourier Transform Infrared Spectroscopy
IUPAC
International Union of Pure and Applied Chemistry
Kd
Distribution coefficient
PFO
Pseudo-First-Order kinetic model
PSO
Pseudo-Second-Order kinetic model
RE
Removal Efficiency
pHpzc
Point of zero charge
SEM
Scanning Electron Microscopy
UV–Vis
Ultraviolet–Visible spectroscopy
XRD
X-ray Diffraction
XRF
X-ray Fluorescence
Hierarchical composite
Activated carbon
γ-Al2O3
Synergistic adsorption
Cationic dye
Water remediation
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