Synthesis of TiO2-CuO@graphene oxide hybrid bionanocomposite with enhanced antibacterial and organic dye degradation activities
Funding Sponsor
American University in Cairo
Third Author's Department
Chemistry Department
Fourth Author's Department
Chemistry Department
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https://doi.org/10.1039/d5ma00031a
Document Type
Research Article
Publication Title
Materials Advances
Publication Date
3-31-2025
doi
10.1039/d5ma00031a
Abstract
The cumulative spread of infectious diseases and water pollution necessitates the development of innovative green materials. To address this challenge, titanium oxide (TiO2) and copper oxide (CuO) nanoparticles (NPs) were mycofabricated using Trichoderma virens filtrate, which was grafted with graphene oxide (GO) nanosheets prepared via the modified Tour's method, resulting in a TiO2-CuO@GO bionanocomposite. XRD revealed peaks corresponding to hexagonal carbon, rutile tetragonal TiO2, and tenorite monoclinic CuO in the TiO2-CuO@GO, having average crystallite sizes of 10.65 and 25.73 nm for GO and TiO2-CuO@GO, respectively. FTIR revealed distinct absorption bands corresponding to oxygen-containing functional groups such as -OH, C 00000000 00000000 00000000 00000000 11111111 00000000 11111111 00000000 00000000 00000000 O, C C, and C-OH. EDX spectra confirmed homogenous elemental distributions of Ti 2p, Cu 2p, O 1s, and C 1s in the bionanocomposite. The zeta potential values and hydrodynamic sizes were −36.8 mV and 291.1 nm for GO and +25.6 mV and 603.2 nm for TiO2-CuO@GO, respectively. FE-SEM and HRTEM revealed that GO displayed a transparent, flaky structure with few wrinkles, whereas TiO2-CuO@GO displayed opaque, rounded TiO2 NPs and elongated, rod-shaped CuO NPs loaded onto GO. The bionanocomposite exhibited potent antibacterial activity against various foodborne and phytobacterial pathogens. TiO2-CuO@GO was evaluated as a nanocatalyst for the degradation of Congo red at initial concentrations ranging from 10 to 50 mg L−1. Upon activation with peroxymonosulfate, the material demonstrated a degradation efficiency of 70% within 28 min. Enhanced dye removal under saline conditions indicated the improved efficiency of the nanocatalyst. This study highlights the multidisciplinary potential of TiO2-CuO@GO for applications in food packaging, agriculture, and wastewater treatment.
First Page
2654
Last Page
2676
Recommended Citation
APA Citation
Omran, B.
Abdel-Salam, M.
Farghal, H.
El-Sayed, M.
&
Baek, K.
(2025). Synthesis of TiO2-CuO@graphene oxide hybrid bionanocomposite with enhanced antibacterial and organic dye degradation activities. Materials Advances, 6(8), 2654–2676.
https://doi.org/10.1039/d5ma00031a
MLA Citation
Omran, Basma A., et al.
"Synthesis of TiO2-CuO@graphene oxide hybrid bionanocomposite with enhanced antibacterial and organic dye degradation activities." Materials Advances, vol. 6, no. 8, 2025, pp. 2654–2676.
https://doi.org/10.1039/d5ma00031a