Biosynthesis and Characterization of ZnO Nanoparticles Using Ketapang Leaf Extract Yanuar Hamzah, Annisa Febiola, Lazuardi, Salomo
Jurusan Fisika FMIPA Universitas Riau
Abstract
The process of biosynthesis and characterization of ZnO nanoparticles using Ketapang leaf extract to degrade methylene blue has been successfully carried out. ZnO nanoparticles were formed through a synthesis process between a 0.05 M solution of Zn(NO3)26H2O with Ketapang leaf extract. The synthesis was carried out with variations in temperature, namely 60C, 70C and 80C then dripped with 1M NaOH solution until it reached pH 12. The absorbance intensity of nanoparticles for each sample based on the UV-Vis Spectrophotometer test, respectively, was 1.479, 1.099 and 1.016. The sample with the highest absorbance intensity (A) was tested by X-Ray Diffraction, it is known that the particle size ranges from 9.04 to 25.31 nm. SEM characterization showed the presence of micro-flower morphology with a size distribution of 392 to 423 nm. The TEM characterization showed a particle size distribution between 230 to 259 nm with an average particle diameter of 241.6 nm. The degradation activity of 25 ppm methylene blue solution with variations in contact time of 0, 30, 60, 90, 120, 150 and 180 minutes resulted in a degradation efficiency of 8.4%, 12.7%, 23%, 26%, 27%, and 33%.
Keywords: ZnO Nanoparticles, Terminalia Catappa Leaves, Methylene Blue, UV- Vis, XRD, SEM, TEM
