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Mahmood Abdullah

Assistant Professor

Assistant Professor

كلية العلوم
Department of Chemistry, College of Science, P.O. Box 2455, Riyadh-11451, Kingdom of Saudi Arabia, Building 5, 2B, 105
publication
Conference Paper
2024

Ulva lactuca L. extract bio-templated fabrication of CuO/ZnFe2O4 nanocomposites for photodegradation organic dye pollutants and in vitro biological activities

In this present work, a novel CuO/ZnFe2O4 nanocomposites has been fabricated via hydrothermal-assisted synthesis using Ulva lactuca L. extract as both a reducing and capping agent A comprehensive investigation such as structural, morphological, optical, and electronic properties of the CuO/ZnFe2O4 NCs were investigated in details. The photocatalytic efficacy of the prepared CuO/ZnFe2O4 NCs was assessed for Congo red (CR) dye degradation and the experimental results demonstrate the CuO/ZnFe2O4 NCs exhibits superior photocatalytic activity (91.13% k=0.03289 min− 1 ) compared to pure CuO and ZnFe2O4 catalysts under 120 min of visible light irradiation. Additionally, the CuO/ZnFe2O4 NCs exhibited excellent long-term recycling stability over four consecutive cycles. This enhanced photocatalytic performance of CuO/ZnFe2O4 NCs was attributed to the synergism between CuO and ZnFe2O4, which facilitate the exceptional properties such as large specific area, a wide visible-light absorption range, and efficient electron-hole separation. Furthermore, the prepared CuO/ZnFe2O4 NCs were evaluated for their in vitro antibacterial and anticancer properties. The results of the disc diffusion assay with CuO/ZnFe2O4 NCs as an antibacterial agent demonstrated a highest zone of inhibition of 18.23 ± 0.30 mm for Bacillus subtilis and 19.83 ± 0.76 mm Escherichia coli. Moreover, in vitro cytotoxicity assessments using the MTT assay indicated a 64.94% cytotoxic activity against HT-29 colon cancer cells. The multifunctional advantages of Ulva lactuca L. extract-mediated green CuO/ZnFe2O4 NCs hold significant promise for environmental remediation and in vitro-based therapeutic applications

Publisher Name
Sciencedirect
Volume Number
689
Magazine \ Newspaper
Colloids and Surfaces A: Physicochemical and Engineering Aspects
more of publication
publications

While the presence of long-chain paraffinic compounds in crude oil seriously impacts oil production, they tend to form emulsions during flow through restricted pores. In turn, these emulsions help…

by Alpana Singh, Aditya Raj Kashyap, Mahmood M. S. Abdullah, Shashank Vajpayee, and Tushar Sharma
2024
Published in:
ACS
publications

The objective of this study is to synthesize novel heterocyclic scaffolds containing a thiophene moiety using easily accessible acetoacetamide as a key synthon. The reaction of acetoacetamide with…

by Altaf S. Almatari, Ali Saeed, Ghada E. Abdel-Ghani, Mahmood M. S. Abdullah, Amr El-Demerdash, Ehab Abdel-Latif
2024
Published in:
Wiley
publications

In this present work, a novel CuO/ZnFe2O4 nanocomposites has been fabricated via hydrothermal-assisted synthesis using Ulva lactuca L. extract as both a reducing and capping agent A comprehensive…

by Ravichandran D, Mahmood M.S. Abdullah, Vasanthakumar V, Ranjith R, Suganya S, Meena R, Murugesan S
2024
Published in:
Sciencedirect