Immobilized titanium dioxide/powdered activated carbon system for the photocatalytic adsorptive removal of phenol
作者： Noor Nazihah Bahrudin , Mohd Asri Nawi
DOI: 10.1007/S11814-018-0062-4
关键词:
摘要: Titanium dioxide (TiO2) and powdered activated carbon (PAC) were fabricated via a layer by arrangement on glass plate using dip-coating technique for the photocatalytic-adsorptive removal of phenol. Thinner TiO2 coated PAC sub-layer has larger surface area better phenol than thicker layer. The system obeyed Langmuir isotherm model, which exhibited homogeneous monolayer adsorption with maximum capacity 27.8 mg g-1. intra-particle diffusion was rate-limiting step as linear plot crossed origin, while unfavorable at elevated temperature. Under light irradiation, TiO2/PAC removed two-times more effectively due to synergistic effect photocatalysis top sub-layer. COD rapid 10mg L-1 concentration under solar irradiation. It shown that plays significant role in total providing sites slowing down recombination rate charge carriers improve photocatalytic oxidation performance.
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