ZnO/CuO nanocomposite prepared in one-pot green synthesis using seed bark extract of Theobroma cacao

Yoki Yulizar, Ridla Bakri, Dewangga Oky Bagus Apriandanu, Taufik Hidayat

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

A method for green synthesis of ZnO/CuO nanocomposite using Theobroma cacao seed bark extract (TBE) has been investigated. ZnO/CuO nanocomposite synthesis aims to decrease a high band gap energy of ZnO. Zn(NO3)2 and Cu(NO3)2 solutions were used as a precursors. TBE can substitute NaOH as the base source material which contained alkaloids as shown from the phytochemical test. Identification of nanocomposite was characterized by UV–Vis diffuse reflectance spectrophotometry (DRS), Fourier-transform infrared (FT-IR) spectroscopy, scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM), X-ray diffraction analysis (XRD) and Fluorescence Spectrophotometer. ZnO/CuO nanocomposite had the band gap energy of 2.3 eV. TEM result showed the size of ZnO/CuO nanocomposite was 20–50 nm.

Original languageEnglish
Pages (from-to)300-305
Number of pages6
JournalNano-Structures and Nano-Objects
Volume16
DOIs
Publication statusPublished - 1 Oct 2018

Keywords

  • Band gap energy
  • Green synthesis
  • Theobroma cacao
  • ZnO/CuO nanocomposite

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