Antibacterial activity of TiO2, CuO, and CuO/TiO2 nanomaterials and their potential application on construction surfaces DOI Creative Commons
Zurisadai Martínez‐Corona, D. S. García-Zaleta, Rosendo López González

et al.

Deleted Journal, Journal Year: 2025, Volume and Issue: 20(1)

Published: May 26, 2025

Abstract In the construction sector, diverse microorganisms have ability to form biofilms on constructed surfaces affecting health of inhabitants. this sense, nanomaterials titanium oxide (TiO 2 ), copper (CuO), and CuO/TiO were synthesized by sol–gel method, Pechini a mechanical synthesismethod. The influence thermal treatment (425–575 °C) formation crystalline phases in compounds, as well their antibacterial activity Escherichia coli Staphylococcus aureus was investigated. X-ray diffraction technique(XRD) results displayed anatase, rutile, tenorite as-synthesized samples. Rietveld refinement analysis estimated composition phases, crystal size for each phase specimens (from ~ 16 up 165 nm). Fourier Transform Infrared (FTIR) spectroscopy showed characteristic M–O vibrations TiO CuO compounds. No relevant signals precursors detected. RAMAN confirmed anatase rutile nanomaterials. Scanning electron microscopy (SEM) micrographs revealed morphology compounds dynamic light scattering (DLS) electrophoretic (ELS) particle sizes 225 750 nm) with Z-potentials between − 11 mV 21 mV. Nitrogen adsorption/desorption isotherms pore 0.2 12.4 nm surface area values 158 m /g. Finally, minimum inhibitory concentration (MIC) evaluation that CuO-based exhibit good activity, MIC starting at 0.625 mg/mL, sample 475 °C highest efficacy 0.312 mg/mL. These suggest could be used disinfection agents sick buildings, they reduce risks associated exposure bacteria.

Language: Английский

Facet engineering in Au nanoparticles buried in Cu2O nanocubes for enhanced catalytic degradation of rhodamine B and larvicidal application DOI

J.P. Steffy,

Asad Syed, Chinnaperumal Kamaraj

et al.

Sustainable materials and technologies, Journal Year: 2024, Volume and Issue: unknown, P. e01185 - e01185

Published: Nov. 1, 2024

Language: Английский

Citations

14
An updated review on green synthesized nanoparticles to control insect pests DOI
Ramalingam Karthik Raja, Prabukumar Seetharaman, Govindasamy Balasubramani

et al.

Journal of Pest Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 9, 2025

Language: Английский

Citations

0
Novel insecticidal properties of bioactive zoochemicals extracted from sea urchin Salmacis virgulata DOI Creative Commons

Karnan Ramachandran,

Ramachandran Vinayagam,

Usha Nandhini Govindan

et al.

Open Chemistry, Journal Year: 2025, Volume and Issue: 23(1)

Published: Jan. 1, 2025

Abstract The present investigation assessed the insecticidal potential of zoo chemicals extracted from test (skeleton) and spines sea urchin Salmacis virgulata against Tribolium castaneum , Aedes aegypti Sf-9 cell line through assays for in vitro acetylcholinesterase (AChE) inhibition, cytotoxicity, repellency, larvicidal activity, silico modeling. Gas chromatography–mass spectrometry (GC–MS) analysis 50% ethanolic extract identified 40 distinct zoochemicals, including four with known pesticidal properties, S. . exhibited promising demonstrated by AChE inhibition an IC 50 143.41 µg/ml. Additionally, cytotoxicity was measured EC 194.68 µg/ml, a repellent index (IR) less than 0.80, LC toxicity 153.205 Further statistical computational techniques confirmed activity spine zoo-extract T. A. zoochemicals that are similarly involved on all selected insecticide molecular targets have very strong correlation, range r = 0.977–0.995. This highlights positive correlation between target evidence zoological insecticides harmful pests enzyme repellence, larvae toxicity. We recommend utilization waste as source insecticides. These bio-based pesticides offer eco-friendly approach to pest control their repellency toxicity, being readily biodegradable presenting lower environmental risks compared synthetic pesticides.

Language: Английский

Citations

0
Antibacterial activity of TiO2, CuO, and CuO/TiO2 nanomaterials and their potential application on construction surfaces DOI Creative Commons
Zurisadai Martínez‐Corona, D. S. García-Zaleta, Rosendo López González

et al.

Deleted Journal, Journal Year: 2025, Volume and Issue: 20(1)

Published: May 26, 2025

Abstract In the construction sector, diverse microorganisms have ability to form biofilms on constructed surfaces affecting health of inhabitants. this sense, nanomaterials titanium oxide (TiO 2 ), copper (CuO), and CuO/TiO were synthesized by sol–gel method, Pechini a mechanical synthesismethod. The influence thermal treatment (425–575 °C) formation crystalline phases in compounds, as well their antibacterial activity Escherichia coli Staphylococcus aureus was investigated. X-ray diffraction technique(XRD) results displayed anatase, rutile, tenorite as-synthesized samples. Rietveld refinement analysis estimated composition phases, crystal size for each phase specimens (from ~ 16 up 165 nm). Fourier Transform Infrared (FTIR) spectroscopy showed characteristic M–O vibrations TiO CuO compounds. No relevant signals precursors detected. RAMAN confirmed anatase rutile nanomaterials. Scanning electron microscopy (SEM) micrographs revealed morphology compounds dynamic light scattering (DLS) electrophoretic (ELS) particle sizes 225 750 nm) with Z-potentials between − 11 mV 21 mV. Nitrogen adsorption/desorption isotherms pore 0.2 12.4 nm surface area values 158 m /g. Finally, minimum inhibitory concentration (MIC) evaluation that CuO-based exhibit good activity, MIC starting at 0.625 mg/mL, sample 475 °C highest efficacy 0.312 mg/mL. These suggest could be used disinfection agents sick buildings, they reduce risks associated exposure bacteria.

Language: Английский

Citations

0