Pada studi ini, tiga persentase massa dari perak ditambahkan ke nanokomposit oksidanikel dan oksida cerium dengan tiga rasio molar berbeda dari kedua oksida.Nanokomposit telah disintesis menggunakan metode ultrasonic-assisted. Lima teknikkarakterisasi digunakan untuk mengevaluasi bahan, X-ray diffraction (XRD), X-rayfluorescence (XRF), UV-Vis diffuse reflectance, Raman Spectroscopy, danAdsorpsi/Desorpsi Nitrogen. Dua sumber radiasi, cahaya tampak UV digunakan untukmendegradasi metilen biru sebagai objek polutan untuk aktivitas fotokatalitik. Katalisnanokomposit dengan persentase massa Ag sebanyak 20 wt.% menunjukkan aktivitasfotokatalitik tertinggi. Dalam proses degradasi metilen biru dengan katalis nanokompositelektron scavenger merupakan spesies aktif utama pada proses degradasi

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In this study, three different weight percentages of silver were added to the nickel oxide

and cerium oxide nanocomposites with three different molar ratios of the two oxides.

These nanocomposites were synthesized using ultrasonic-assisted techniques. Five

characterization techniques were carried out to evaluate the materials, X-ray diffraction

(XRD), X-ray fluorescence (XRF), UV-Vis diffuse reflectance, Raman Spectroscopy,

and Nitrogen Adsorption/Desorption. Two radiation sources, visible and ultraviolet, were

used to degrade methylene blue as a pollutant object for photocatalytic activities. The

nanocomposite catalyst with twenty weight percentages of silver showed the highest

photocatalytic activity. In the degradation process of methylene blue with these

nanocomposite catalyst that electrons becomes the main active species in the process.