Photocatalytic Degradation of Methylene Blue and Metanil Yellow Dyes Using Green Synthesized Zinc Oxide (ZnO) Nanocrystals

• Published in: Crystals (Basel) Vol. 12; no. 1; p. 22
• Main Authors: Priyadharshini, S. Shwetha, Shubha, Jayachamarajapura Pranesh, Shivalingappa, Jaydev, Adil, Syed Farooq, Kuniyil, Mufsir, Hatshan, Mohammad Rafe, Shaik, Baji, Kavalli, Kiran
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01-01-2022
• Subjects: Acids; coconut husk extract; Crystallites; Diffraction patterns; Dyes; Materials science; Methylene blue; Nanocrystals; Nanomaterials; Nanoparticles; Particle size; Photocatalysis; Photodegradation; Spectrum analysis; Synthesis; UV light; Zinc oxide; Zinc oxides; ZnO; Germany; India
• ISSN: 2073-4352; 2073-4352
• DOI: 10.3390/cryst12010022

In this work, ZnO nanocrystals (NCs) have been effectively synthesized by a simple, efficient and cost-effective method using coconut husk extract as a novel fuel. The synthesized NCs are characterized by UV-Vis, XRD, FT-IR, SEM, EDX, Raman and PL studies. The obtained ZnO were found to be UV-active with a bandgap of 2.93 eV. The X-ray diffraction pattern confirms the crystallinity of the ZnO with hexagonally structured ZnO with a crystallite size of 48 nm, while the SEM analysis reveals the hexagonal bipyramid morphology. Photocatalytic activities of the synthesized ZnO NCs are used to degrade methylene blue and metanil yellow dyes.