Open AccessPreparation of ZnO nanoparticles in n-hexane-water system using Moringa oliefera leaf extract and its photodegradation activity
Author(s) -
Yofi Ike Pratiwi,
Yoki Yulizar,
Dewangga Oky Bagus Apriandanu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/763/1/012022
Subject(s) - photodegradation , scanning electron microscope , fourier transform infrared spectroscopy , nanoparticle , materials science , photocatalysis , nuclear chemistry , hexane , band gap , methylene blue , diffuse reflection , diffuse reflectance infrared fourier transform , moringa , analytical chemistry (journal) , chemical engineering , chemistry , nanotechnology , organic chemistry , optics , catalysis , optoelectronics , physics , food science , engineering , composite material
In this study, ZnO nanoparticles were successfully synthesized using Moringa oliefera leaf extract in two phases system of n-hexane-water. The presence of secondary metabolites in n-hexane acts as a weak base source and precursor of Zn(NO 3 ) 2 , in water were needed for the formation of ZnO nanoparticles. ZnO nanoparticles were further characterized using UV-Vis Diffuse Reflectance Spectroscopy(DRS), Fourier Transform Infrared (FTIR), X-Ray Diffraction (XRD), Scanning Electron Microscopy-Energy Dispersive X-Ray (SEM-EDX), and Tunneling Electron Microscopy (TEM). Based on TEM characterization, the particles size of ZnO nanoparticles was approximately 67 nm. The band gap energy of ZnO was 3.2 eV. The photocatalytic activities of ZnO nanoparticles were observed through the methylene blue (MB) degradation under UV-light irradiation. The percentage of MB degradation was 99 % for 2 h.