Magnetic casein aggregates as an innovative support platform for laccase immobilization and bioremoval of crystal violet

Recently, we demonstrated that triphenylacetic acid could be used to seal dye molecules within MOF-5, but guest release required digestion of the framework by treatment with acid. We prepared the sterically bulky photocapping group [bis-(3-nitro-benzyl)-amino]-(3-nitro-phenyl)-acetic acid (PC1) can prevent Crystal violet dye diffusion from inside MOF-5 until removed by photolysis.

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On-Demand Guest Release from MOF-5 Sealed with Nitrophenylacetic Acid Photocapping Groups

10.26434/chemrxiv.8146103 ◽

2019 ◽

Author(s):

Jingjing Yan ◽

Rick Homan ◽

Corrianna Boucher ◽

Prem N. Basa ◽

Katherine Fossum ◽

...

Keyword(s):

Acetic Acid ◽

Crystal Violet ◽

Dye Molecules ◽

Phenyl Acetic Acid ◽

On Demand ◽

Crystal Violet Dye ◽

Dye Diffusion ◽

Triphenylacetic Acid

Recently, we demonstrated that triphenylacetic acid could be used to seal dye molecules within MOF-5, but guest release required digestion of the framework by treatment with acid. We prepared the sterically bulky photocapping group [bis-(3-nitro-benzyl)-amino]-(3-nitro-phenyl)-acetic acid (PC1) can prevent Crystal violet dye diffusion from inside MOF-5 until removed by photolysis.

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A KINETIC MODEL FOR THE CRYSTAL VIOLET MINERALIZATION IN WATER BY THE ELECTRO- FENTON PROCESS

Environmental Engineering and Management Journal ◽

10.30638/eemj.2008.002 ◽

2008 ◽

Vol 7 (1) ◽

pp. 9-12 ◽

Cited By ~ 4

Author(s):

Ilie Siminiceanu ◽

Carmen-Ionela Alexandru ◽

Eric Brillas

Keyword(s):

Kinetic Model ◽

Crystal Violet ◽

Fenton Process

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α-Cellulose Fibers of Paper-Waste Origin Surface-Modified with Fe3O4 and Thiolated-Chitosan for Efficacious Immobilization of Laccase

Polymers ◽

10.3390/polym13040581 ◽

2021 ◽

Vol 13 (4) ◽

pp. 581

Author(s):

Gajanan S. Ghodake ◽

Surendra K. Shinde ◽

Ganesh D. Saratale ◽

Rijuta G. Saratale ◽

Min Kim ◽

...

Keyword(s):

Enzyme Immobilization ◽

Photoelectron Spectroscopy ◽

Cellulose Fibers ◽

Relative Activity ◽

Significant Activity ◽

X Ray Diffraction ◽

X Ray ◽

Transmission Electron ◽

Laccase Immobilization ◽

Surface Modified

The utilization of waste-paper-biomass for extraction of important α-cellulose biopolymer, and modification of extracted α-cellulose for application in enzyme immobilization can be extremely vital for green circular bio-economy. Thus, in this study, α-cellulose fibers were super-magnetized (Fe3O4), grafted with chitosan (CTNs), and thiol (-SH) modified for laccase immobilization. The developed material was characterized by high-resolution transmission electron microscopy (HR-TEM), HR-TEM energy dispersive X-ray spectroscopy (HR-TEM-EDS), X-ray diffraction (XRD), vibrating sample magnetometer (VSM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FT-IR) analyses. Laccase immobilized on α-Cellulose-Fe3O4-CTNs (α-Cellulose-Fe3O4-CTNs-Laccase) gave significant activity recovery (99.16%) and laccase loading potential (169.36 mg/g). The α-Cellulose-Fe3O4-CTNs-Laccase displayed excellent stabilities for temperature, pH, and storage time. The α-Cellulose-Fe3O4-CTNs-Laccase applied in repeated cycles shown remarkable consistency of activity retention for 10 cycles. After the 10th cycle, α-Cellulose-Fe3O4-CTNs possessed 80.65% relative activity. Furthermore, α-Cellulose-Fe3O4-CTNs-Laccase shown excellent degradation of pharmaceutical contaminant sulfamethoxazole (SMX). The SMX degradation by α-Cellulose-Fe3O4-CTNs-Laccase was found optimum at incubation time (20 h), pH (3), temperatures (30 °C), and shaking conditions (200 rpm). Finally, α-Cellulose-Fe3O4-CTNs-Laccase gave repeated degradation of SMX. Thus, this study presents a novel, waste-derived, highly capable, and super-magnetic nanocomposite for enzyme immobilization applications.

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Understanding of the mechanism of crystal violet adsorption on modified halloysite: hydrophobicity, performance, and interaction

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2021.125656 ◽

2021 ◽

pp. 125656

Author(s):

Kheira Belkassa ◽

Mounir Khelifa ◽

Isabelle Batonneau-Gener ◽

Kheira Marouf-Khelifa ◽

Amine Khelifa

Keyword(s):

Crystal Violet

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Using infrared luminescence to study crystal violet lactone in carbonless papers

Chemical Papers ◽

10.1007/s11696-021-01641-8 ◽

2021 ◽

Author(s):

Silvia Stašková ◽

Milena Reháková ◽

Michal Oravec ◽

Andrea Jabconová

Keyword(s):

Crystal Violet ◽

Infrared Luminescence

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Green synthesis of magnetic α–Fe2O3 nanospheres using Bridelia retusa leaf extract for Fenton-like degradation of crystal violet dye

Applied Nanoscience ◽

10.1007/s13204-021-01952-y ◽

2021 ◽

Author(s):

Raja Selvaraj ◽

Shraddha Pai ◽

Gokulakrishnan Murugesan ◽

Sadanand Pandey ◽

Ruchi Bhole ◽

...

Keyword(s):

Iron Oxide ◽

Green Synthesis ◽

Crystal Violet ◽

Leaf Extract ◽

Bet Analysis ◽

Crystal Violet Dye ◽

Pros And Cons ◽

Manufacturing Techniques ◽

The Stability ◽

Bridelia Retusa

AbstractThe reach of nanotechnology has permeated into a range of disciplines and systematically revolutionized many manufacturing techniques. Today, nanoparticles are fabricated using varied approaches, each with its pros and cons. Of them, the green synthesis approach has been very effective in terms of overall economics and the stability of nanoparticles. The current study investigates the use of the leaf extract of Bridelia retusa for the synthesis of iron oxide nanoparticles. Typical of these nanoparticles, no specific peak was discernible on employing UV–visible spectroscopy. The size, morphological features, and crystallinity of the nanoparticles were determined by employing scanning electron microscopy and electron diffraction spectroscopy. Almost uniformly sized at 38.58 nm, the nanoparticles were spherical, constituting elemental iron at 11.5% and elemental oxygen at 59%. Their relative composition confirmed the nanoparticles to be iron oxide. X-ray diffraction studies showed the particles to be hexagonal and rhombohedral, estimating the crystallite size at 24.27 nm. BET analysis put the pore volume at 0.1198 cm3/g and pore diameter at 7.92 nm. The unique feature of the nanoparticles was that the specific surface area was 75.19 m2/g, which is more than 12 times higher than commercial α-Fe2O3. The participation of a variety of biochemicals in the leaf extract towards the reduction-cum-stabilization was confirmed using FTIR analysis. The Fenton-like catalytic activity of the nanoparticles was put to test by attempting to degrade crystal violet dye, which was completely achieved in 270 min. The kinetics of the degradation was also modelled in the study.

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