Photocatalytic and microbial degradation of Amaranth dye

Morajkar, Pranay P.; Naik, Amarja P.; Bugde, Sandesh T.; Naik, Bhanudas R.

doi:10.1016/b978-0-12-817497-5.00020-3

Cited by 12 publications

(5 citation statements)

References 43 publications

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“…The organic dyes which are used in textile and food industries have become a center of research in environmental science because of their persistent, toxic and carcinogenic effects on human life [ 2 , 3 ]. Among all the dyes, the water soluble non-biodegradable azo dyes are ubiquitous; they contain one or more than one -N=N- group bonded to aromatic rings and different functional groups [ 4 , 5 , 6 ]. Amaranth dye is an anionic acidic monoazo dye with chemical formula C 20 H 11 N 2 O 10 S 3 , having the IUPAC name of trisodium 1-(4-supho-1-naphthylazo)-2-naphthol-3,6-disuphonic acid; it is widely used as colorant under the name of Acid Red 27 and Food Red 9 [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

CuO Nanorods Immobilized Agar-Alginate Biopolymer: A Green Functional Material for Photocatalytic Degradation of Amaranth Dye

et al. 2023

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The contamination of water is increasing day by day due to the increase of urbanization and population. Textile industries contribute to this by discarding their waste directly into water streams without proper treatment. A recent study explores the treatment potential of copper oxide nanorods (CuO NRs) synthesized on a green basis in the presence of a biopolymer matrix of agar (AA) and alginate (Alg), in terms of cost effectiveness and environmental impact. The synthesized bio nanocomposite (BNC) was characterized by using different instrumental techniques such as Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), ultra-violet spectroscopy (UV-Vis), scanning electron microscopy-energy dispersive X-ray-elemental analysis (SEM-EDX), transmission electron microscopy (TEM), selected area diffraction pattern (SAED) and X-ray photoelectron spectroscopy (XPS). The optical studies revealed that immobilization of CuO NRs with Alg-Agar biopolymer blend resulted in an increase in light absorption capacity by decreasing the energy bandgap from 2.53 eV to 2.37 eV. The bio nanocomposite was utilized as a photocatalyst for the degradation of amaranth (AN) dye from an aquatic environment under visible light irradiation. A statistical tool known as central composite design (CCD) associated with response surface methodology (RSM) was taken into consideration to evaluate the optimized values of process variables and their synergistic effect on photocatalytic efficiency. The optimized values of process variables were found to be irradiation time (45 min), AN concentration (80 ppm), catalyst dose (20 mg), and pH (4), resulting in 95.69% of dye degradation at 95% confidence level with desirability level 1. The rate of AN degradation was best defined by pseudo-first-order reaction based on the correlation coefficient value (R2 = 0.99) suggesting the establishment of adsorption-desorption equilibrium initially at the catalyst surface then photogenerated •O2– radicals interacting with AN molecule to mineralize them into small non-toxic entities like CO2, H2O. The material used has high efficiency and stability in photocatalytic degradation experiments up to four cycles of reusability.

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Section: Introductionmentioning

confidence: 99%

CuO Nanorods Immobilized Agar-Alginate Biopolymer: A Green Functional Material for Photocatalytic Degradation of Amaranth Dye

et al. 2023

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“…Therefore, the amaranth dye has a severely negative impact on aquatic ecosystem, environment and life system, and its removal from wastewater has become a top priority. [1] At present, the emerging photocatalysis technology has been actively studied and implemented in the global scope. The development of suitable semiconductor photocatalysts for photocatalytic water purification is naturally expected.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, its decomposition products have the toxicity that may cause the mutation and cancer. Therefore, the amaranth dye has a severely negative impact on aquatic ecosystem, environment and life system, and its removal from wastewater has become a top priority [1] . At present, the emerging photocatalysis technology has been actively studied and implemented in the global scope.…”

Section: Introductionmentioning

confidence: 99%

Ag₃PO₄ Nanoparticles Decorated Carbon Nitride Nanotube to Boost Visible‐Light Photocatalytic Activity for the Degradation of Azo Dyes

Wang

Cong

et al. 2022

ChemistrySelect

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An efficient and stable photocatalyst consisting of Ag 3 PO 4 nanoparticles coupled with carbon nitride nanotubes (G-C 3 N 4 ) for the degradation of azo dyes was firstly prepared by in-situ deposition method. The Ag 3 PO 4 decoration significantly improved the photocatalytic activity of G-C 3 N 4 , in which Ag 3 PO 4 / G-C 3 N 4 with mass ratio of 15 % could achieve the degradation efficiency of 95 % within 20 min. And the kinetic constant of degradation reaction was up to 0.14 min À 1 , which has around 22.5 times enhancement compared with that of G-C 3 N 4 . The heterojunction between Ag 3 PO 4 and G-C 3 N 4 accelerates the efficient separation and transfer of photogenerated charge carriers, and the Ag nanoparticles verified to be generated by the photoreduction of Ag 3 PO 4 can also act as an internal channel to promote the charge transport. In addition, the effect of the concentration of both catalyst and dye on the photocatalytic activity was further investigated. The proposed Zscheme catalytic mechanism of the composite photocatalyst was also proved.

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“…[19] The photocatalytic activity of various semiconductor materials has been investigated over the years to degrade aqueous organic pollutants [20][21][22] with a major attention towards titanium dioxide, [23][24][25][26][27][28][29][30][31][32] zinc oxide [33,34] or other metal oxides. [35][36][37][38][39] As a new class of semiconductor nanomaterials, Carbon Dots (CDs) are gaining attention also in the field of wastewater treatment for the removal of dyes. [40][41] CDs are, in fact, luminescent, biodegradable and bio-based carbon material that are promising for photocatalytic applications [42] but even with the immense progress in their synthesis, there are still few reports where bare CDs were directly used as active photocatalytic material for the degradation of dyes, [43] and in particular azo dyes.…”

Section: Introductionmentioning

confidence: 99%

Continuous Flow Photooxidative Degradation of Azo Dyes with Biomass‐Derived Carbon Dots

et al. 2022

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Photocatalytic and microbial degradation of Amaranth dye

Cited by 12 publications

References 43 publications

CuO Nanorods Immobilized Agar-Alginate Biopolymer: A Green Functional Material for Photocatalytic Degradation of Amaranth Dye

CuO Nanorods Immobilized Agar-Alginate Biopolymer: A Green Functional Material for Photocatalytic Degradation of Amaranth Dye

Ag₃PO₄ Nanoparticles Decorated Carbon Nitride Nanotube to Boost Visible‐Light Photocatalytic Activity for the Degradation of Azo Dyes

Continuous Flow Photooxidative Degradation of Azo Dyes with Biomass‐Derived Carbon Dots

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Photocatalytic and microbial degradation of Amaranth dye

Cited by 12 publications

References 43 publications

CuO Nanorods Immobilized Agar-Alginate Biopolymer: A Green Functional Material for Photocatalytic Degradation of Amaranth Dye

CuO Nanorods Immobilized Agar-Alginate Biopolymer: A Green Functional Material for Photocatalytic Degradation of Amaranth Dye

Ag3PO4 Nanoparticles Decorated Carbon Nitride Nanotube to Boost Visible‐Light Photocatalytic Activity for the Degradation of Azo Dyes

Continuous Flow Photooxidative Degradation of Azo Dyes with Biomass‐Derived Carbon Dots

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Ag₃PO₄ Nanoparticles Decorated Carbon Nitride Nanotube to Boost Visible‐Light Photocatalytic Activity for the Degradation of Azo Dyes