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dc.contributor.author Nazim, Mohammed -
dc.contributor.author Khan, Aftab Aslam Parwaz -
dc.contributor.author Asiri, Abdullah M. -
dc.contributor.author Kim, Jae Hyun -
dc.date.accessioned 2021-04-20T12:18:39Z -
dc.date.available 2021-04-20T12:18:39Z -
dc.date.created 2021-02-18 -
dc.date.issued 2021-02 -
dc.identifier.citation ACS Omega, v.6, no.4, pp.2601 - 2612 -
dc.identifier.issn 2470-1343 -
dc.identifier.uri http://hdl.handle.net/20.500.11750/13033 -
dc.description.abstract In this work, we report the facile, environmentally friendly, room-temperature (RT) synthesis of porous CuO nanosheets and their application as a photocatalyst to degrade an organic pollutant/food dye using NaBH4 as the reducing agent in an aqueous medium. Ultrahigh-resolution field effect scanning electron microscopy images of CuO displayed a broken nanosheet-like (a length of ∼160 nm, a width of ∼65 nm) morphology, and the lattice strain was estimated to be ∼1.24 × 10-3 using the Williamson-Hall analysis of X-ray diffraction plots. Owing to the strong quantum size confinement effect, CuO nanosheets resulted in an optical energy band gap of ∼1.92 eV, measured using Tauc plots of the ultraviolet-visible (UV-vis) spectrum, resulting in excellent photocatalytic efficiency. The RT synthesized CuO catalyst showed a high Brunauer-Emmet-Teller surface area of 30.88 ± 0.2313 m2/g (a correlation coefficient of 0.99972) with an average Barrett-Joyner-Halenda pore size of ∼20.385 nm. The obtained porous CuO nanosheets exhibited a high crystallinity of 73.5% with a crystallite size of ∼12 nm and was applied as an efficient photocatalyst for degradation of the organic pollutant/food dye, Allura Red AC (AR) dye, as monitored by UV-vis spectrophotometric analysis and evidenced by a color change from red to colorless. From UV-vis spectra, CuO nanosheets exhibited an efficient and ultrafast photocatalytic degradation efficiency of ∼96.99% for the AR dye in an aqueous medium within 6 min at RT. According to the Langmuir-Hinshelwood model, photodegradation reaction kinetics followed a pseudo-first-order reaction with a rate constant of k = 0.524 min-1 and a half-life (t1/2) of 2.5 min for AR dye degradation in the aqueous medium. The CuO nanosheets showed an outstanding recycling ability for AR degradation and would be highly favorable and an efficient catalyst due to the synergistic effect of high adsorption capability and photodegradation of the food dye. © 2021 The Authors. Published by American Chemical Society -
dc.language English -
dc.publisher American Chemical Society -
dc.title Exploring Rapid Photocatalytic Degradation of Organic Pollutants with Porous CuO Nanosheets: Synthesis, Dye Removal, and Kinetic Studies at Room Temperature -
dc.type Article -
dc.identifier.doi 10.1021/acsomega.0c04747 -
dc.identifier.wosid 000618087400018 -
dc.identifier.scopusid 2-s2.0-85100319190 -
dc.type.local Article(Overseas) -
dc.type.rims ART -
dc.description.journalClass 1 -
dc.citation.publicationname ACS Omega -
dc.contributor.nonIdAuthor Nazim, Mohammed -
dc.contributor.nonIdAuthor Khan, Aftab Aslam Parwaz -
dc.contributor.nonIdAuthor Asiri, Abdullah M. -
dc.identifier.citationVolume 6 -
dc.identifier.citationNumber 4 -
dc.identifier.citationStartPage 2601 -
dc.identifier.citationEndPage 2612 -
dc.identifier.citationTitle ACS Omega -
dc.type.journalArticle Article -
dc.description.isOpenAccess Y -
dc.contributor.affiliatedAuthor Nazim, Mohammed -
dc.contributor.affiliatedAuthor Khan, Aftab Aslam Parwaz -
dc.contributor.affiliatedAuthor Asiri, Abdullah M. -
dc.contributor.affiliatedAuthor Kim, Jae Hyun -
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Division of Energy Technology 1. Journal Articles

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