Pyrazinamide photodegradation on NiWO4-palygorskite nanocomposites under polychromatic irradiation

Pyrazinamide photodegradation on NiWO4-palygorskite nanocomposites under polychromatic irradiation

In this work, antibiotic pyrazinamide (PZA) photodegradation on palygorskite (Pal), NiWO 4 crystals, and NiWO 4 -Pal (2, 6, and 10%) nanocomposites was evaluated under polychromatic irradiation. In the characterization of the samples, XRD patterns displayed good crystallinity for NiWO 4 crystals and...

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Bibliographic Details
Published in:Environmental science and pollution research international Vol. 29; no. 52; pp. 79343 - 79356
Main Authors: Ibiapina, Bruna R. S., Lima, Aline E. B., Ribeiro, Lara K., Cruz-Filho, João F., Sales, Ana G. C., Ramos, Marcos A. B., Sousa, José A., Souza, Daniele, Gobato, Yara G., Santos, Francisco E. P., Paz, Gizeuda L., Luz, Geraldo E.
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-11-2022
Springer Nature B.V
Subjects:
Antibiotics
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Crystals
Earth and Environmental Science
Ecotoxicology
Energy gap
Energy levels
Environment
Environmental Chemistry
Environmental Health
Environmental science
Holes (electron deficiencies)
Irradiation
Nanocomposites
Nickel compounds
Photodegradation
Photoluminescence
Photons
Pyrazinamide
Recombination
Research Article
Spectrum analysis
Tungstates
Vibration mode
Waste Water Technology
Water Management
Water Pollution Control
Wolframite
Water treatment
Clay
Advanced oxidative process
Emergent pollutant
Antibiotic resistance
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Summary:In this work, antibiotic pyrazinamide (PZA) photodegradation on palygorskite (Pal), NiWO 4 crystals, and NiWO 4 -Pal (2, 6, and 10%) nanocomposites was evaluated under polychromatic irradiation. In the characterization of the samples, XRD patterns displayed good crystallinity for NiWO 4 crystals and nanocomposites. In addition, the diffractograms were used in the Rietveld refinement for phase indexing, revealing a wolframite-type monoclinic structure with the space group P2/c. The active vibrational modes related to the characteristic groups of the samples were identified using Raman and FTIR spectroscopy. Photoluminescence (PL) spectra revealed that NiWO 4 and NiWO 4 -Pal (2%) nanocomposite have the highest electron-hole pair recombination rate, and the contribution of the green component in the NiWO 4 -Pal (2%) nanocomposite indicates a greater contribution of deep energy levels to the PL profile. DRS in the UV-visible region indicated that NiWO 4 crystals have indirect band-gap energy (E gap ) 2.64 eV; NiWO 4 -Pal (2, 6, and 10%) nanocomposites have 2.62, 2.58, and 2.59 eV, respectively; and Pal has 2.83 eV. The catalytic tests showed that the NiWO 4 -Pal (2%) nanocomposite samples, under polychromatic radiation, exhibit greater efficiency in photodegradation at 110 min, with yield of 98.5%. The ROS tests indicated that the studied reactive species play a similar role in PZA photodegradation.
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ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-022-21338-z