Chlorophyll-sensitized phenolic resins for the photocatalytic degradation of methylene blue and synthetic blue wastewater

Olivo-Alanís, Daniel; Atilano-Camino, Marina M.; García-González, Alcione; Humberto-Álvarez, Luis; García-Reyes, Refugio Bernardo

doi:10.1007/s10971-021-05674-z

Cited by 6 publications

(3 citation statements)

References 59 publications

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“…The band at 1652 cm −1 indicates the presence of C=O chlorophyll keto groups [ 45 ]. However, this band may also be attributed to C=O vibrations in the carboxylate ion [ 46 ] and vibrations of C=C and/or C–N groups [ 47 , 48 ]. The band at 1605 cm −1 indicates the presence of C=C bonds, while the band at 1538 cm −1 is attributed to C=C and C=N [ 46 ] or N–H [ 48 ] functional groups.…”

Section: Resultsmentioning

confidence: 99%

Selective Removal of Chlorophyll and Isolation of Lutein from Plant Extracts Using Magnetic Solid Phase Extraction with Iron Oxide Nanoparticles

Flieger,

Żuk,

Pasieczna-Patkowska

et al. 2024

IJMS

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In recent years, there has been a growing interest in plant pigments as readily available nutraceuticals. Photosynthetic pigments, specifically chlorophylls and carotenoids, renowned for their non-toxic antioxidant properties, are increasingly finding applications beyond their health-promoting attributes. Consequently, there is an ongoing need for cost-effective methods of isolation. This study employs a co-precipitation method to synthesize magnetic iron oxide nanoparticles. Scanning electron microscopy (SEM) coupled with energy dispersive spectrometry (EDS) confirms that an aqueous environment and oxidizing conditions yield nanosized iron oxide with particle sizes ranging from 80 to 140 nm. X-ray photoelectron spectroscopy (XPS) spectra indicate the presence of hydrous iron oxide FeO(OH) on the surface of the nanosized iron oxide. The Brunauer–Emmett–Teller (BET) surface area of obtained nanomaterial was 151.4 m2 g−1, with total pore volumes of pores 0.25 cm3 g−1 STP. The material, designated as iron oxide nanoparticles (IONPs), serves as an adsorbent for magnetic solid phase extraction (MSPE) and isolation of photosynthetic pigments (chlorophyll a, lutein) from extracts of higher green plants (Mentha piperita L., Urtica dioica L.). Sorption of chlorophyll a onto the nanoparticles is confirmed using UV–vis spectroscopy, Fourier transform infrared photoacoustic spectroscopy (FT-IR/PAS), and high-performance liquid chromatography (HPLC). Selective sorption of chlorophyll a requires a minimum of 3 g of IONPs per 12 mg of chlorophyll a, with acetone as the solvent, and is dependent on a storage time of 48 h. Extended contact time of IONPs with the acetone extract, i.e., 72 h, ensures the elimination of remaining components except lutein, with a spectral purity of 98%, recovered with over 90% efficiency. The mechanism of chlorophyll removal using IONPs relies on the interaction of the pigment’s carbonyl (C=O) groups with the adsorbent surface hydroxyl (–OH) groups. Based on molecular dynamics (MD) simulations, it has been proven that the selective adsorption of pigments is also influenced by more favorable dispersion interactions between acetone and chlorophyll in comparison with other solutes. An aqueous environment significantly promotes the removal of pigments; however, it results in a complete loss of selectivity.

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Section: Resultsmentioning

confidence: 99%

Selective Removal of Chlorophyll and Isolation of Lutein from Plant Extracts Using Magnetic Solid Phase Extraction with Iron Oxide Nanoparticles

Flieger,

Żuk,

Pasieczna-Patkowska

et al. 2024

IJMS

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“…In another study with phenolic type resin, photosensitization was achieved via chlorophyll incorporation through Fisher esterification. 123 Chlorophyll-sensitized resin demonstrated favorable photoreduction mechanism via trapping charge carriers over chlorophyll (based on centered Mg ions) followed by electron flux throughout the phenolic resin based on electron delocalization property. In this way of integration, immobilization of chlorophyll on phenolic resin matrix provided higher photocatalytic activity besides superior chemical resistivity both in acidic and alkaline media simulated for photodegradation of the blue waste and MB.…”

Section: ■ Resinsmentioning

confidence: 99%

“…In the case of this, photoactivity relied on ligand-to-metal charge transfer (LMCT) sensitization, which occurred between adsorbate and TiO 2 particles through electron transfer process and most favorable PR-TiO 2 composite obtained via optimizing employed TiO 2 ratio. In another study with phenolic type resin, photosensitization was achieved via chlorophyll incorporation through Fisher esterification . Chlorophyll-sensitized resin demonstrated favorable photoreduction mechanism via trapping charge carriers over chlorophyll (based on centered Mg ions) followed by electron flux throughout the phenolic resin based on electron delocalization property.…”

Section: Resinsmentioning

confidence: 99%

Photocatalyst-Incorporated Cross-Linked Porous Polymer Networks

Esen

Kumru

2022

Ind. Eng. Chem. Res.

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The utilization of sunlight to conduct chemistry has been on a stark rise in the era of sustainability. A similar trend is observed in polymer science, mainly to initiate polymerization and modify polymer materials, but mostly relying on the utilization of soluble initiator/activator molecules. Semiconductors, on the other hand, grant a platform for "photoredox" induced chemical pathways, so that reductive and oxidative reactions (as well as radical formation) can be tailored according to band positions. Despite their utilization as dispersed or dissolved phases, immobilization of semiconductors on macroscale solid surfaces is attractive to entail scale-up options. In this Review, semiconductors incorporated in cross-linked porous polymer networks will be summarized both from synthesis and application perspectives.

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Solar energy driven photo catalytic action and antimicrobial activities of Iron oxide nanoparticles

Batool,

Shah,

Ashraf

et al. 2023

J Sol-Gel Sci Technol

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Chlorophyll-sensitized phenolic resins for the photocatalytic degradation of methylene blue and synthetic blue wastewater

Cited by 6 publications

References 59 publications

Selective Removal of Chlorophyll and Isolation of Lutein from Plant Extracts Using Magnetic Solid Phase Extraction with Iron Oxide Nanoparticles

Selective Removal of Chlorophyll and Isolation of Lutein from Plant Extracts Using Magnetic Solid Phase Extraction with Iron Oxide Nanoparticles

Photocatalyst-Incorporated Cross-Linked Porous Polymer Networks

Solar energy driven photo catalytic action and antimicrobial activities of Iron oxide nanoparticles

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