Strobilanthes crispus (B.) leaf extract-assisted green synthesis of ZnO-La2O3 composite and preliminary study of its photocatalytic activity

R. I. Ashna, Y. Yulizar, D. O.B. Apriandanu

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

In this study, ZnO-La2O3 composite as photocatalyst was synthesized via facile sol-gel route using biomaterial as a weak base source and a capping agent. ZnO-La2O3 composite was successfully formed through the reaction of Zn(NO3)2 (aq), La(NO3)3 (aq) and Strobilanthes crispus (B.) aqueous leaf extract. Zn-O and La-O vibration modes of ZnO-La2O3 composite was analysed by Fourier Transform Infra Red (FTIR) at 400-700 cm-1 wavenumber. Optical band gap of ZnO-La2O3 composite determined by using Tauc plot method was about 5.21 eV. X-Ray Diffraction (XRD) pattern of ZnO-La2O3 composite confirmed a combination of the diffraction patterns of ZnO particle and La2O3 particle. Photocatalytic activity of ZnO-La2O3 composite and ZnO particle were observed with methylene blue using UV light irradiation. The percentage of methylene blue degradation using ZnO-La2O3 composite and ZnO particle were 81.75 % and 74.87 %, respectively. This result shows that La2O3 was improving the activity and stability of the ZnO photocatalyst.

Original languageEnglish
Article number012004
JournalIOP Conference Series: Materials Science and Engineering
Volume763
Issue number1
DOIs
Publication statusPublished - 28 Apr 2020
Event3rd International Symposium on Current Progress in Functional Materials 2018, ISCPFM 2018 - Depok, Indonesia
Duration: 8 Aug 20189 Aug 2018

Keywords

  • green synthesis
  • methylene blue
  • photocatalyst
  • Strobilanthes crispus (B.)
  • ZnOLa O composite

Fingerprint

Dive into the research topics of 'Strobilanthes crispus (B.) leaf extract-assisted green synthesis of ZnO-La<sub>2</sub>O<sub>3</sub> composite and preliminary study of its photocatalytic activity'. Together they form a unique fingerprint.

Cite this