TiO2/Co3O4nanocomposite: Synthesis via Catharanthus roseus (L.) G. Don leaf extract, characterization and its photocatalytic activity for malachite green degradation

T. W.W. Syahfitri, Y. Yulizar, J. Gunlazuardi, D. O.B. Apriandanu

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1 Citation (Scopus)

Abstract

TiO2/Co3O4 nanocomposite was successfully synthesized using leaf extract of Catharanthus roseus (L.) G. Don. (CRE), precursors of TTIP and Co(NO3)2. FT-IR characterization shows that TiO2/Co3O4 has been formed due to the presence of secondary metabolites in CRE which have a major role as a weak base source for nanocomposite synthesis. Particle size analysis was employed by PSA and TEM, which were found to be 38.04 nm and 90.80 nm, respectively. Besides, the UV-Vis DRS result shows that TiO2/Co3O4 has bandgap energy at 2.8 eV. According to the morphological analysis, TiO2/Co3O4 nanocomposite has a spherical shape confirmed by SEM. The structural analysis was confirmed by XRD that TiO2/Co3O4 nanocompositehas a diffraction pattern combination of TiO2 and Co3O4 nanoparticle. The photocatalytic activity of TiO2/Co3O4 nanocomposite was examined for malachite green degradation. The result shows that the degradation percentage was 82.61 % under visible light illumination for 120 min.

Original languageEnglish
Article number012003
JournalIOP Conference Series: Materials Science and Engineering
Volume902
Issue number1
DOIs
Publication statusPublished - 2020
Event4th International Symposium on Current Progress in Functional Materials, ISCPFM 2019 - Bali, Indonesia
Duration: 6 Nov 20197 Nov 2019

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