Green synthesized ZnO-Fe2O3-Co3O4 nanocomposite for antioxidant, microbial disinfection and degradation of pollutants from wastewater. (December 2022)

• Record Type: Journal Article
• Authors: Batool, Sana; Hasan, Murtaza; Dilshad, Momina; Zafar, Ayesha; Tariq, Tuba; Shaheen, Aqeela; Iqbal, Rafia; Ali, Zeeshan; Munawar, Tauseef; Iqbal, Faisal; Hassan, Shahbaz Gul; Shu, Xugang; Caprioli, Giovanni
• Is Part Of: Biochemical systematics and ecology. Volume 105(2022)
• Publication Date: 2022-12
• Subjects: Nanocomposites -- Industrial wastes -- Cordia myxa -- Photocatalytic agent -- Bacterial resistance -- Antibiofilm; Chemotaxonomy -- Periodicals; Biochemical variation -- Periodicals; Ecology -- Periodicals; Biochemistry -- Periodicals; Ecology -- Periodicals; Chimiotaxinomie -- Périodiques; Variation biochimique -- Périodiques; Écologie -- Périodiques; 578.012
• DOI: 10.1016/j.bse.2022.104535
• Languages: English
• ISSNs: 0305-1978

Abstract

Abstract: Microbial resistance, industrial and agricultural wastes are the major concerning problems of today's world. Herein is a highly efficient incubated ZnO–Fe2 O3 –Co3 O4 nanocomposite derived from Cordia myxa through a green chemistry approach. UV–visible spectroscopy (UV–Vis) was confirmed the peak on 508 and 387 with the energy bandgap of 2.2eV for I-NC. X-ray diffraction analysis (XRD) revealed the diffraction pattern of incubated nanocomposites (I-NC) that ZnO showed hexagonal, while Co3 O4 and Fe2 O3 showed cubic structure. SEM analyses show the patterns comprising the crystal morphology of flower-ZnO, agglomerated Fe2 O3 spongy rhombohedral Co3 O4 . The results of antibacterial activity show that the I-NC have a greater value of zone of inhibition (ZOI) against bacterial strains than NC, with the highest percentage in this trend P-aeruginosa 94% > S-aureus 91% > K-pneumonia 89% > E-coli 87% > P-vulgaris 81% . The photocatalytic activity data showed that the Methylene Blue, Methyl Orange, Rhodamine-B, P-Nitroaniline, and Cresol Red dyes were degraded in the presence of I-NC catalysts after sunlight irradiation. The degradation efficiencies of I-NC show the trend Methylene Blue (99.98%) > P-Nitroaniline (99.97%) > Rhodamine-B (99.86%) > Cresol Red (99.80%) > Methyl Orange (99.6%). This study reported that the use of the Cordia myxa for the formulation of incubated nanocomposite could be employed as a novel antibacterial agent to inhibit bacterial growth and biofilm formation and photocatalytic agent. Highlights: ZnO–Fe2 O3 –Co3 O4 nanocomposite were synthesized by using extract of Cordia myxa. Green synthesized ZnO–Fe2 O3 –Co3 O4 nanocomposite were characterized via UV –Vis, XRD and FTIR. Biologically synthesized ZnO–Fe2 O3 –Co3 O4 nanocomposite displayed significant antibacterial and antioxidant activity. ZnO–Fe2 O3 –Co3 O4 nanocomposite showed effective Photocatalytic activity of against five different dyes.