Ag 2 O nanoparticles fabrication by Vernonia amygdalina Del. leaf extract: Synthesis, characterization, and its photocatalytic activities

Ariffinisa Lintang Widyaningtyas, Yoki Yulizar, Dewangga Oky Bagus Apriandanu

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4 Citations (Scopus)


Green synthesis of Ag 2 O nanoparticle (Ag 2 O NP) has been investigated using Vernonia amygdalina Del. leaf extract (VaDLE). The secondary metabolite of VaDLE plays a role as a base source and capping agents, which can be determined by phytochemical screening. The diffraction pattern and crystallinity of Ag 2 O NP was confirmed by X-ray diffraction, while the distribution size of Ag 2 O NP can be determined by using transmission electron microscopy. Fourier transform-infra red spectrum was used to show the interaction VaDLE and Ag 2 O NP. FT-IR characterization showed the presence of Ag-O band at 825 cm -1 . The characterization of UV-Vis spectrophotometer showed the typical absorption of Ag 2 O at maximum wavelength, λ max of 262 and 452 nm. The size distribution of Ag 2 O was 22.70 nm confirmed by particle size analyser. UV-Vis DRS characterization proved the bandgap energy of Ag 2 O at 1.56 eV. The photocatalytic activity of Ag 2 O NP was observed on the degradation of methylene blue. The result of the degradation percentage was 71.59%.

Original languageEnglish
Article number012022
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 3 May 2019
Event13th Joint Conference on Chemistry, JCC 2018 - Semarang, Indonesia
Duration: 7 Sep 20188 Sep 2018



  • Ag O nanoparticle
  • green synthesis
  • methylene blue
  • photocatalytic activity
  • Vernonia amygdalina Del.

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