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AuthorAl-Kandari, Shekhah A.
AuthorMohamed, Ahmed M.
AuthorAbdullah, Aboubakr M.
AuthorAlMarzouq, Douaa S.
AuthorNasrallah, Gheyath K.
AuthorSharaf, Mohammed A.
AuthorYounes, Nadine
AuthorHamdan, Munia M.
AuthorAltahtamouni, Talal
AuthorAl-Kandari, Halema A.
Available date2022-09-04T08:12:03Z
Publication Date2021-06-21
Publication NameChemistrySelect
Identifierhttp://dx.doi.org/10.1002/slct.202004820
CitationS. A. Al-Kandari, A. M. Mohamed, A. M. Abdullah, D. S. AlMarzouq, G. K. Nasrallah, M. A. Sharaf, N. Younes, M. M. Hamdan, T. Altahtamouni, H. A. Al-Kandari, ChemistrySelect 2021, 6, 5752.
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85108273557&origin=inward
URIhttp://hdl.handle.net/10576/33673
AbstractDifferent BN/TiO2 nanocomposites were prepared hydrothermally, and their ratio was optimized to get the best photocatalytic performance towards phenol degradation. They were characterized by x-ray photoelectron spectroscopy, x-ray diffraction, Fourier transform infrared spectroscopy, thermal gravimetric analysis, scanning and transmission electron microscopies coupled with energy dispersive x-ray units, BET surface area, and UV-Vis diffuse reflectance. The bandgap energy was reduced from 3.35 to 2.95 eV due to the formation of the B−O−Ti bond. This allowed the exploitation of the visible light and inhibited the TiO2 e−/h+ recombination, and consequently, the photocatalytic activity of TiO2 was dramatically improved. Almost 90 % mineralization of 20 ppm phenol solution was achieved within 30 min under simulated sunlight. The as-prepared composite showed excellent stability and reusability. Mechanistic analysis indicated that (Formula presented.) and h+ played a crucial role in phenol degradation. The nanocomposite′s biocompatibility and environmental impact were evaluated by analyzing its potential toxicity in vivo using the zebrafish embryos. 96-hpf acute toxicity assays, including the mortality rate assay (to obtain the LC50 values) and teratogenic assays (to obtain the No Observed Effect Concentration, NOEC) was conducted. The LC50 value for BN/TiO2 was 482.5 mg L−1, and the NOEC was 100 mg L−1. Based on LC50 value and according to the Fish and Wildlife Service (FWS) acute toxicity rating scale, the photocatalyst is “practically not toxic.”.
SponsorThe authors acknowledge the Public Authority for Applied Education and Training (PAAET), Kuwait, for using their facility in the laboratory of the Department of Health Environment. This publication was partially supported by Qatar University, internal grant number QUCG-CAM-20/21-2. The findings achieved herein are solely the responsibility of the authors. Open Access funding provided by the Qatar National Library.
Languageen
PublisherWiley
Subjectboron nitride
Ecotoxicology
phenol degradation
Photocatalyst
zebrafish embryo model
TitleSynthesis and Optimization of a Highly Stable and Efficient BN/TiO2 Nanocomposite for Phenol Degradation: A Photocatalytic, Mechanistic and Environmental Impact Study
TypeArticle
Pagination5752-5762
Issue Number23
Volume Number6
ESSN2365-6549
dc.accessType Open Access


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