Innovative enhancement of electron tunneling synergy in carbon-doped Ta 2 O 5 CuO photocatalyst with nematic liquid crystal for safe drinking water.

Autor: Rajan ST; Department of Materials Physics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India., Senthilnathan J; Department of Civil Engineering, Indian Institute of Technology Madras, Chennai 600036, India. Electronic address: jsn@iitm.ac.in., Arockiarajan A; Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai 600 036, India; Ceramic Technology Group- Center of Excellence in Materials and Manufacturing Futuristic Mobility, Indian Institute of Technology Madras, Chennai 600 036, India. Electronic address: aarajan@iitm.ac.in.
Jazyk: angličtina
Zdroj: Water research [Water Res] 2024 May 15; Vol. 255, pp. 121457. Date of Electronic Publication: 2024 Mar 12.
DOI: 10.1016/j.watres.2024.121457
Abstrakt: This study focuses on enhancing the photocatalytic properties of carbon-doped Ta 2 O 5 CuO (C-Ta 2 O 5 CuO) nanocomposites for drinking water purification. The nanocomposites were fabricated by depositing C-Ta 2 O 5 CuO onto Nematic Liquid Crystal Polaroid (NLCP) obtained from a discarded laptop monitor, employing the sputter deposition method. The X-ray diffraction (XRD) and High-resolution transmission electron microscopy (HRTEM) determined the nanocomposite thin films' crystallinity and structural properties. The EDX and XPS analyses confirmed the elemental composition and reality of the Cu-incorporated Ta 2 O 5 nanocomposites, respectively. The combination of electron tunneling enhancement provided by the NLCP and graphitic carbon led to exceptional photocatalytic performance. This was particularly evident in the efficient degradation of P-Rosaniline Hydrochloride (PRH) dye in an aqueous medium. C-Ta 2 O 5 CuO catalytic activities were estimated at various dye concentrations, repeatability, reusability with time, and kinetics. Coating's stability and long-term activity in photocatalysis reactions were also tested. Additionally, Cu present in the C-Ta 2 O 5 CuO and ˙OH radicals exhibited remarkable bactericidal activity. They displayed significant antibacterial efficacy against both gram-positive Escherichia coli (E. coli) and gram-negative Staphylococcus aureus (S. aureus) bacteria. These findings have significant implications for the development of advanced materials with potent photocatalytic and antibacterial properties, holding promise for improving drinking water quality and addressing environmental and health challenges.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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