Abstract
Activated carbon (AC) supported with titanium dioxide (TiO2) doped with nitrogen (N) and cerium (Ce), denoted as AC/TiO2 doped N-Ce was synthesized for adsorption and photodegradation of amoxicillin (AMX) antibiotic. Photocatalyst was prepared using sol-gel approach assisted by microwave irradiation.30 experiment runs were generated for photocatalyst production and optimized via Central Composite Design-Response Surface Methodology (CCD-RSM) with observation of four types of variable parameters. The experimental variables consisted of the quantities of urea (N) (𝑥𝑥𝑖𝑖: 0.02–0.20 g), amount of cerium (III) nitrate hexahydrate (Ce) (𝑥𝑥𝑗𝑗: 0.02–0.20 g), amount of AC (𝑥𝑥𝑘𝑘: 0.10 –0.50 g), and microwave power (𝑥𝑥𝑙𝑙: 600–800 W). The analysis revealed that AC/TiO2 doped N-Ce photocatalyst, which was prepared with 0.50 g AC, 0.02 g N, and 0.20 g Ce, and activated with microwave power 600 W in 15 min, achieved a 93.6% AMX removal under UV light irradiation. The photocatalyst was initially subjected to a concentration of 10 mg L-1 at 30 °Cfor a duration of 60 min.
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