SiO 2-TiO 2@ propylamine-Ni (II) as the catalyst for the benzyl alcohol oxidation has been synthesized by utilizing rice husk ash as the SiO 2 source. This research was started by extracting SiO 2 from rice husk ash and continued by synthesizing the SiO 2-TiO 2 composite using titanium (IV) tetraisopropoxide (TTIP) as TiO 2 precursor and PEG-40 as template. The composite functionalization and metal modification were carried out by adding (3-aminopropyl) triethoxysilane (APTES) as the source of propylamine linker and impregnating NiCl 2· 6H 2 O as the nickel precursor, respectively. The catalysts were synthesized by varying the ratios between each component within the material. The prepared materials were then characterized using ATR-IR, XRD, XRF, PSA, SAA, AAS, SEM-EDX, HR-TEM, and TGA. The catalyst activity was investigated by applying it to the oxidation reaction of benzyl alcohol to benzaldehyde with H 2 O 2 as the oxidizing agent under sonication system. The obtained products were then analyzed by using GC-MS to quantify the success of the reaction. All characterizations performed in this research generally indicate the success in the synthesis of SiO 2-TiO 2@ propylamine-Ni (II) materials. Under the same condition including at room temperature, 1 h reaction time, and sonication system, the optimal oxidation reaction of benzyl alcohol was reached when SiO 2-TiO 2@ propylamine-Ni (II) 5 was used as the catalyst in 98.52% yield.