A magnetically separable and recyclable g-C3N4/Fe3O4/porous ruthenium nanocatalyst for the photocatalytic degradation of water-soluble aromatic amines and azo dyes

Sahoo, Anupam; Patra, Srikanta

doi:10.1039/c9ra08631e

Cited by 22 publications

(10 citation statements)

References 103 publications

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“…Some amines show also a low biodegradability rate [47] and can be precursors of hazardous compounds [48,49], which makes the development of innovative materials for their removal highly necessary. The preparation of new materials for this kind of application is still mostly devoted to the use of carbon nanotubes (CNTs) and carbon-nitride derivatives, as reported by several authors [50][51][52]. Phyllosilicates too were employed as adsorbent for aromatic amines [53].…”

Section: Introductionmentioning

confidence: 99%

Sulfonated Cellulose-Based Magnetic Composite as Useful Media for Water Remediation from Amine Pollutants

et al. 2020

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Commercially available microcrystalline cellulose (MCC) was functionalized using chlorosulfonic acid, while iron oxide nanoparticles (IONPs) were adsorbed on the surface of the cellulose derivative by the Massart’s co-precipitation method. The obtained magnetite-decorated sulfate cellulose nanoparticles (MDSCNs) were characterized via Fourier transform infrared (FTIR) spectroscopy, scanning-electron microscopy (SEM), and elemental analysis, while the acidity of the functionalized cellulose was determined using an acid–base titration with phenolphthalein as an indicator. Furthermore, in order to determine the adsorptive power of the obtained composite, a series of analyses were performed on aqueous amine pollutants using flame ionization detection gas chromatography (GC-FID). The results of this study clearly show how a bio-compatible green polymer as cellulose can be easy functionalized in order to improve its chemical and physical properties, obtaining a magnetic composite useful in water purification. Adsorption percentages up to 90% and a very small amount of composite used (100 mg) proved how our material can be a powerful tool in environmental remediation.

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Section: Introductionmentioning

confidence: 99%

Sulfonated Cellulose-Based Magnetic Composite as Useful Media for Water Remediation from Amine Pollutants

et al. 2020

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“… [22,27] Both g‐C 3 N 4 and Fe 3 O 4 /g‐C 3 N 4 were excited at 350 nm (Figure S2C). g‐C 3 N 4 produced stronger fluorescence near 450 nm, [28] while the fluorescence intensity of Fe 3 O 4 /g‐C 3 N 4 was largely reduced. Involvement of Fe 3 O 4 in the photogenerated electron transfer might greatly reduce the electron‐hole complexation rate [29] .…”

Section: Resultsmentioning

confidence: 97%

Fe₃O₄/g‐C₃N₄ Nanozyme for Production of L‐DOPA as Mimetics of Tyrosine Hydroxylase

et al. 2022

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L-DOPA is in large demand as the mainstay of therapeutic treatment for Parkinson's disease. The development of a facile route is urgently required for production of L-DOPA. A nanozyme was developed for biomimetic synthesis of L-DOPA by mimicking natural tyrosine hydroxylase. Fe 3 O 4 /g-C 3 N 4 nanocomposite was fabricated by introducing iron oxide into g-C 3 N 4 nanosheets. Formation of FeÀ N bonds with structure resembled the active center. The nanozyme possessed superparamagnetic characteristics and wide light response range. The nanozyme exhibited similar activity as tyrosine hydroxylase by catalyzing hydroxylation of tyrosine in the presence of visible light irradiation and hydrogen peroxide. Maximum yield and titer was obtained as 15% and 1 mM for production of L-DOPA, respectively. The nanozyme demonstrated high stability and reusability. The nanozyme catalyzed the reaction in an analogous mechanism with Fe IV O 2 + as the dominant active species. It might provide a promising insight to produce L-DOPA due to advantages of easy separation and mild conditions.

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“…Other photocatalysts (Table 3) for the degradation of azo dyes were reported in the form of nanocomposites based on Al [47], Au [48], Bi [49][50][51], Fe [52][53][54][55], Li [56], Ni [57], and Zr [58]. The Fe-based photocatalysts are exploited for their easy separation due to the fact of their magnetic properties.…”

Section: Other Nanocomposite Photocatalystsmentioning

confidence: 99%

Polymer Nanocomposites for Photocatalytic Degradation and Photoinduced Utilizations of Azo-Dyes

Wang

Xiao

2021

Polymers

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Specially designed polymer nanocomposites can photo-catalytically degrade azo dyes in wastewater and textile effluents, among which TiO2-based nanocomposites are outstanding and extensively explored. Other nanocomposites based on natural polymers (i.e., chitosan and kaolin) and the oxides of Al, Au, B, Bi, Fe, Li, and Zr are commonly used. These nanocomposites have better photocatalytic efficiency than pure TiO2 through two considerations: (i) reducing the hole/electron recombination rate by stabilizing the excited electron in the conducting band, which can be achieved in TiO2-nanocomposites with graphene, graphene oxide, hexagonal boron nitride (h-BN), metal nanoparticles, or doping; (ii) decreasing the band energy of semiconductors by forming nanocomposites between TiO2 and other oxides or conducting polymers. Increasing the absorbance efficiency by forming special nanocomposites also increases photocatalytic performance. The photo-induced isomerization is exploited in biological systems, such as artificial muscles, and in technical fields such as memory storage and liquid crystal display. Heteroaryl azo dyes show remarkable shifts in photo-induced isomerization, which can be applied in biological and technical fields in place of azo dyes. The self-assembly methods can be employed to synthesize azo-dye polymer nanocomposites via three types of interactions: electrostatic interactions, London forces or dipole/dipole interactions between azo dyes, and photo alignments.

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A magnetically separable and recyclable g-C₃N₄/Fe₃O₄/porous ruthenium nanocatalyst for the photocatalytic degradation of water-soluble aromatic amines and azo dyes

Abstract: A magnetically separable and recyclable g-C3N4/Fe3O4/porous ruthenium nanocatalyst display excellent photocatalytic degradation of water-soluble aromatic amines and azo dyes at ambient condition.

Cited by 22 publications

References 103 publications

Sulfonated Cellulose-Based Magnetic Composite as Useful Media for Water Remediation from Amine Pollutants

Sulfonated Cellulose-Based Magnetic Composite as Useful Media for Water Remediation from Amine Pollutants

Fe₃O₄/g‐C₃N₄ Nanozyme for Production of L‐DOPA as Mimetics of Tyrosine Hydroxylase

Polymer Nanocomposites for Photocatalytic Degradation and Photoinduced Utilizations of Azo-Dyes

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A magnetically separable and recyclable g-C3N4/Fe3O4/porous ruthenium nanocatalyst for the photocatalytic degradation of water-soluble aromatic amines and azo dyes

Abstract: A magnetically separable and recyclable g-C3N4/Fe3O4/porous ruthenium nanocatalyst display excellent photocatalytic degradation of water-soluble aromatic amines and azo dyes at ambient condition.

Cited by 22 publications

References 103 publications

Sulfonated Cellulose-Based Magnetic Composite as Useful Media for Water Remediation from Amine Pollutants

Sulfonated Cellulose-Based Magnetic Composite as Useful Media for Water Remediation from Amine Pollutants

Fe3O4/g‐C3N4 Nanozyme for Production of L‐DOPA as Mimetics of Tyrosine Hydroxylase

Polymer Nanocomposites for Photocatalytic Degradation and Photoinduced Utilizations of Azo-Dyes

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A magnetically separable and recyclable g-C₃N₄/Fe₃O₄/porous ruthenium nanocatalyst for the photocatalytic degradation of water-soluble aromatic amines and azo dyes

Fe₃O₄/g‐C₃N₄ Nanozyme for Production of L‐DOPA as Mimetics of Tyrosine Hydroxylase