Title

Photocatalytic degradation of organic pollutants using Trianthema Portulastrum leaf extract based CeO2 nanoparticles

Authors

A. Swetharanyam¹ and R. Kunjitham^2*

Affiliation

¹Research scholar, PG & Research department of chemistry, Department of Chemistry, Poompuhar College (Autonomous) Melaiyur - 609 107 (Affiliated to Bharathidasan University, Tiruchirappalli, Tamil Nadu- 620024); ²PG & Research department of chemistry, Department of Chemistry, Poompuhar College (Autonomous) Melaiyur - 609 107 (Affiliated to Bharathidasan University, Tiruchirappalli, Tamil Nadu 620024),

Email

R. Kunjitham - Email: kunjithamr@gmail.com

Article Type

Research Article

Date

Submitted on September 5, 2020; Revision September 9, 2020; Accepted September 11, 2020; Published October 31, 2020

Comparison of bio CeO2-Nps prepared using Trianthema Portulastrum leaf extract with chemical CeO2-Nps is of interest. The ultraviolet - visible, x-ray diffraction, HR - TEM, FT - IR, and photoluminescence studies were conducted with CeO2-Nps. UV–Maximum absorptionat
292 nm was completed using UV-visible spectrum. The HR–TEM images showed 38 nm bio CeO2-Nps with spherical morphology. This showed the polycrystalline character of CeO2-Nps similar to XRD data. The presence of metal oxide is confirmed by FT - IR analyses. The CeO2-Nps showed the potential photocatalytic activity for Acid black 1 color degradation after exposure to sunlight. Chem and bio CeO2-Nps have a degradation rate of 86.66 and 94.33%, respectively for acid black 1 dye. The synthesized CeO2-Nps are also evaluated for antibacterial and antioxidant activity. The bio CeO2-Nps has antibacterial activity for Pseudomonas aeruginosa (17 ± 0.56 mm) and
Staphylococcus aureus (16 ± 0.24 mm) at low concentrations of 100 μl. The CeO2-Nps bio showed high inhibition of radical DPPH IC50 μg/ml, at 95.17 ± 21. Thus, we show that CeO2-Nps have environmentally friendly properties that are useful for dye degradation with antimicrobial and antioxidant activities.

Keywords

CeO2 nanoparticles, plant extract, dye degradation, antibacterial, antioxidant

Citation

Swetharanyam & Kunjitham, Bioinformation 16(10): 765-778 (2020)

Edited by

P Kangueane

ISSN

0973-2063

Publisher

Biomedical Informatics

License

This is an Open Access article which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. This is distributed under the terms of the Creative Commons Attribution License.