Nb2O5/MWCNT nanocomposites for the degradation of ibuprofen via photocatalysis and catalytic ozonation

Fidelis, Michel Z.; Santos, Ana S.G.G. dos; Paula, Elaine T. de; Lenzi, Giane G.; Soares, Olivia S.G.P.; Andreo, Onelia A.B.

doi:10.1016/j.catcom.2024.106853

Cited by 4 publications

References 59 publications

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Green synthesis of Ag/ZnO catalysts using cassava starch applied to the degradation of emerging contaminants

do Nascimento,

de Souza,

Lenzi

et al. 2024

Biofuels Bioprod Bioref

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This work describes a new synthetic route for the production of a low‐cost and environmentally friendly catalyst: a zinc oxide‐based system doped with silver, prepared using a novel sol–gel method with cassava starch to form the gel. The photocatalysts were characterized by different techniques: X‐ray diffraction (XRD), X‐ray fluorescence spectroscopy (XRF), energy dispersive X‐ray spectroscopy (EDS), transmission electron microscopy (TEM), photoacoustic spectroscopy (PAS), and point of zero charge (PZC). The XRF and EDS results indicated that photocatalysts doped with 2%, 5%, 8%, and 10%, silver could be obtained successfully. The synthesis method employed produced nanoparticles of ~30 nm, as confirmed by XRD and TEM results. The band gap energy values of the materials (ranging from 1.98 to 3.05 eV) fall within the range suitable for catalyst activation under UV radiation. Photocatalytic reactions were carried out with two emerging pollutants, 2,4‐d‐dichlorophenoxyacetic acid (2,4D) and caffeine, to verify the catalytic activity of the synthesized catalyst. The results indicated that the catalyst was efficient for the degradation of both pollutants. Tests using solar radiation led to 100% degradation of 2,4D. Cl− ions did not influence the process negatively. The amount of caffeine removed by the photocatalytic process used in solar radiation was ~97% due to the low band gap energy values of the synthesized material.

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Green synthesis of Ag/ZnO catalysts using cassava starch applied to the degradation of emerging contaminants

do Nascimento,

de Souza,

Lenzi

et al. 2024

Biofuels Bioprod Bioref

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Pharmaceutical pollutants in water: Carbon nanotube–photocatalyst composites as a path forward

Amaya-Galván,

Ramírez-Escárcega,

Zaruma-Torres

et al. 2025

Journal of Environmental Chemical Engineering

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Adsorption, photocatalysis, and sonocatalytic activities of LaFeO₃/methylcellulose/multi-walled carbon nanotubes-NiCu₂O₄/Zn for removal of organic pollutant: preparation, main factor, and mechanism

Salova,

Syed,

Jameel

et al. 2024

Phys. Scr.

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The primary objective of this study was to create and analyze a new type of LaFeO3/methylcellulose/multi-walled carbon nanotubes-NiCu2O4/Zn nanocomposite, called LFO/MC/MWCNT-NCO/Z, which has multiple functions. Structural investigation using field emission scanning electron microscopy showed that the nanoparticles (40–50 nm) were evenly distributed throughout the nanocomposite, suggesting that they were successfully incorporated without any clumping. FTIR research verified the existence of functional groups that facilitate electrostatic interactions with contaminants, hence strengthening catalytic performance and improving adsorption efficiency. The BET analysis revealed a significantly high specific surface area of 72.61 m2/g, which greatly enhances its ability to adsorb substances. The nanocomposite demonstrated high removal efficiency in adsorption (74.55%), photocatalysis (68.19%), and sonocatalysis (91.22%) procedures, highlighting its potential for effectively removing bisphenol A as organic pollutants. The synthesized LFO/MC/MWCNT-NCO/Z nanocomposite shows great potential in effectively eliminating organic contaminants from water solutions. This offers a sustainable way to address water pollution and protect human health and the environment.

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Nb2O5/MWCNT nanocomposites for the degradation of ibuprofen via photocatalysis and catalytic ozonation

Cited by 4 publications

References 59 publications

Green synthesis of Ag/ZnO catalysts using cassava starch applied to the degradation of emerging contaminants

Green synthesis of Ag/ZnO catalysts using cassava starch applied to the degradation of emerging contaminants

Pharmaceutical pollutants in water: Carbon nanotube–photocatalyst composites as a path forward

Adsorption, photocatalysis, and sonocatalytic activities of LaFeO₃/methylcellulose/multi-walled carbon nanotubes-NiCu₂O₄/Zn for removal of organic pollutant: preparation, main factor, and mechanism

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Nb2O5/MWCNT nanocomposites for the degradation of ibuprofen via photocatalysis and catalytic ozonation

Cited by 4 publications

References 59 publications

Green synthesis of Ag/ZnO catalysts using cassava starch applied to the degradation of emerging contaminants

Green synthesis of Ag/ZnO catalysts using cassava starch applied to the degradation of emerging contaminants

Pharmaceutical pollutants in water: Carbon nanotube–photocatalyst composites as a path forward

Adsorption, photocatalysis, and sonocatalytic activities of LaFeO3/methylcellulose/multi-walled carbon nanotubes-NiCu2O4/Zn for removal of organic pollutant: preparation, main factor, and mechanism

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Adsorption, photocatalysis, and sonocatalytic activities of LaFeO₃/methylcellulose/multi-walled carbon nanotubes-NiCu₂O₄/Zn for removal of organic pollutant: preparation, main factor, and mechanism