Synthesis of TiO2-Activated Carbon from Coffee Dregs by Hydrothermal Method for Photodegradation of Diazinon

• DOI: 10.20884/1.jm.2025.20.1.13714
• Publication Date: 2025-04-23T01:26:59Z
• Authors: Tanti Haryati; Helmy Ahmad Zakaria; Sutisna Sutisna; Suwardiyanto Suwa...; Yudi Aris Sulistiyo; Novita Andarini
• Keywords: Photodegradation; Carbon fibers

ABSTRACT. The photocatalytic activity of TiO₂ can be enhanced by binding it to materials with high adsorption capacity. synthesis began the mixture 5 mL TTIP, 30 ethanol, and H₂O stirred for 1 hour. Activated carbon made from coffee grounds in varying amounts (5 g, 10 15 g) was then added TTIP solution, 2 hours. placed an autoclave, heated at 180°C 12 hours, dried, calcined 500°C 3 SEM morphological analysis showed that particles were attached surface activated carbon, which further confirmed EDX data showing presence Ti O elements synthesized material. Furthermore, crystallinity gap analyses demonstrated material exclusively anatase phase. largest area, 286.10 m²/g, observed on titanium dioxide-activated carbon/10 (TiO₂-AC/10), exhibiting a mesoporous structure microporous features. Photocatalytic tests diazinon degradation TiO₂-AC/10 exhibited most significant 65.18%. composite material's capability diminished 9-13% initial third cycle. residual within maintained stability, suggesting integrity durability affixed carbon. Keywords: TiO2-AC, Coffee Dregs, Diazinon, Photocatalysis, Reusability