Ppy/TiO2-SiO2 nanohybrid series: synthesis, characterization, photocatalytic activity, and antimicrobial potentiality

A series of polypyrrole doped TiO 2 -SiO 2 nanohybrids (Ppy/TS NHs) were synthesized thru in-situ oxidation polymerization by varying weight ratio of pyrrole. The structural analysis of NHs were characterized by X-ray Diffraction (XRD) spectra, UV-visible (UV-Vis) spectra and X-ray Photoelectron spe...

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Bibliographic Details
Published in:Journal of environmental health science and engineering 2023-04, Vol.21 (1), p.239-254
Main Authors: Yadav, Meena, Arora, Rajat, Dhanda, Monika, Ahlawat, Simran, Shoran, Sachin, Ahlawat, Suman, Nehra, Satya Pal, Singh, Geeta, Lata, Suman
Format: Article
Language:English
Subjects:
Diffraction
Earth and Environmental Science
Electrochemical reactions
Environment
Environmental Economics
Environmental Engineering/Biotechnology
Environmental Health
Environmental Law/Policy/Ecojustice
Methylene blue
Polymerization
Quality of Life Research
Research Article
Waste Management/Waste Technology
X-rays
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Summary:A series of polypyrrole doped TiO 2 -SiO 2 nanohybrids (Ppy/TS NHs) were synthesized thru in-situ oxidation polymerization by varying weight ratio of pyrrole. The structural analysis of NHs were characterized by X-ray Diffraction (XRD) spectra, UV-visible (UV-Vis) spectra and X-ray Photoelectron spectra (XPS) confirmed synthesis of nanomaterials. Surface and morphological study done by adopting, Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Transmittance Electron Microscopy (TEM) and Brunauer-Emmett-Teller (BET) analysis confirmed the homogenous distribution, nano range size formation and mesoporous nature of nanohybrids. Further, electrochemical behavior of synthesized NHs investigated by adopting Electrochemical Impedance Spectroscopy (EIS) showed good kinetic behaviour and electron transport tendency. The nanohybrids and precursors were examined for photocatalytic degradation of methylene blue (MB) dye and revealed enhanced degradation tendency for the NHs series photocatalysts. It was found that variation of pyrrole (0.1 to 0.3 g) to TS nanocomposites (TS Nc) increased the photocatalytic potential of TS Nc. The maximum photodegradation efficacy was found to be 90.48% in 120 min for Ppy/TS0.2 NHs under direct solar light. Additionally, Ppy/TS0.2 NHs performed appreciably towards antibacterial studies against some Gram-positive and Gram-negative deleterious bacteria, Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus, Shigella flexneri microbes.
ISSN:2052-336X
2052-336X
DOI:10.1007/s40201-023-00858-x