A Novel Approach of Using Green Synthesized Tellurium Nanoparticles to Protect Historical Oil Paintings from Bacterial Degradation | ||||
| Shedet | ||||
| Articles in Press, Accepted Manuscript, Available Online from 17 April 2024 | ||||
| Document Type: research articles | ||||
| DOI: 10.21608/shedet.2024.269053.1236 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Yosr Ezzelregal Elsayed   ; Khaled Abdelfattah Sayed-Ahmed
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| 4th square | ||||
| Abstract | ||||
| A novel approach was developed to investigate the applicability of green-synthesized tellurium nanoparticles (Te-NPs) for the conservation of historical oil paintings from the bacteria effects. The Te-NPs were prepared using two eco-friendly methods. Te-NPs prepared using polyvinylpyrrolidone (PVP) and ascorbic acid (AP-Te-NPs) and those synthesized using Pluchea dioscoridis extract (PE-Te-NPs) were characterized using transmission electron microscopy (TEM) and X-ray diffraction (XRD) to confirm the formation of Te-NPs. Antibacterial activities of Te-NPs, blank mock-up painting models (MPMs), and those treated with Te-NPs (0.1-5 mM) were evaluated against Gram-positive and Gram-negative bacteria. Scanning electron microscopy (SEM) was used to examine the MPMs degraded by the tested bacteria, then, the cytotoxicity of the Te-NPs was evaluated. Additionally, the color properties of the MPMs were determined to evaluate the impact of the prepared Te-NPs on the MPMs. The Te nanorods exhibited lengths in the range of 5-102 nm, and diameters ranged from 1 to 11.5 nm. In addition, Te-NPs with spherical and flower-like shapes ranged from 3.4 to 17.9 nm. Te-NPs showed outstanding antibacterial activity, especially against Gram-negative bacteria. PE-Te-NPs showed higher antibacterial activity against the tested bacteria than AP-Te-NPs did. SEM micrographs and color measurements revealed that the use of Te-NPs significantly minimized the harmful effects of the tested bacteria on MPMs surfaces. Cytotoxicity test also confirmed the potential applicability of Te-NPs (1 mM) as sustainable agents for the conservation of historical oil paintings | ||||
| Keywords | ||||
| Te-NPs; Antibacterial; Oil painting; Heritage conservation; Color properties | ||||
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