Photocatalytic degradation efficiency of azo dye in aqueous phase using different photo catalysts

Alrazzak, Nour Abd; Saad, Suad T.; Al-Gubury, Hazim Y.; Kareem, Mohanad Mousa; Assi, M. M.

doi:10.4314/bcse.v34i3.3

Cited by 5 publications

(3 citation statements)

References 8 publications

(10 reference statements)

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“…Azo dye like methylene blue (MB) is extensively used in fabric industry, but contaminant of serious concern for their toxicological properties and widespread presence in textile water [1,2]. To extract dye from effluent, physical, biological and chemical treatments were developed [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

N and Fe doped NiO nanoparticles for enhanced photocatalytic degradation of azo dye methylene blue in the presence of visible light

Ramesh¹

2021

SN Appl. Sci.

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Pure NiO, N-doped, Fe-doped, N and Fe codoped NiO NPs were fabricated via a precipitation process. The powder X-ray diffraction (XRD) revealed the face centered cubic phase of NiO products. The full width at half maximum (FWHM) of the XRD peak was steadily enlarged with the order of elements N, Fe, N/Fe doped to NiO, and shifted towards a greater angle due to decrease in grain size, as shown by XRD. The average crystallite size of NiO products was calculated, ranging from 6.67 to 3.76 nm, according to the Debye Scherrer formula. The scanning electron microscopy (SEM) demonstrated considerable morphological changes in the produced nanoparticles, including those directed to rock-like geometries (NiO and Fe/NiO nanoparticles) while gas covered-nanocrystals (N/NiO and N/Fe/NiO nanoparticles) were formed using precipitation method. The particle size range of 10–50 nm was estimated using the bar scale in transmission electron microscopy (TEM) pictures. The elemental composition of Ni, O, Fe and N atoms in the respected samples was analyzed by Energy Dispersive X-Ray Analysis (EDX). Photoluminescence (PL) showed band edge emission at 370 nm. The band edge-absorption peak, which is caused by electronic transitions between energy levels, is determined to be in the range 314–325 nm. A UV–Vis analysis found an energy gap amid 3.2 eV and 2.5 eV. The chemical condition of the Fe and N doped NiO composites were validated using XPS. Using visible photo application of undoped and doped NiO NPs, the degradation of an azo dye termed methylene blue was examined. It was N/Fe/NiO (79.8%), Fe/NiO (76%), N/NiO (73%), and NiO (62%) throughout the 6 h irradiation duration. Increased production of OH• radicals was detected in fluorescence tests using terephthalic acid (TA) for N/Fe/NiO NPs, indicating the higher photo-degradation described. Furthermore, the degradation trends of both undoped and doped NiO NPs closely matched the pseudo first order kinetics, according to the kinetic analysis. There was also a suggestion for a thorough MB breakdown mechanism.

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Section: Introductionmentioning

confidence: 99%

N and Fe doped NiO nanoparticles for enhanced photocatalytic degradation of azo dye methylene blue in the presence of visible light

Ramesh¹

2021

SN Appl. Sci.

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“…Indole, its bioisosters, and derivatives have anti-microbial properties toward gram-negative and gram-positive bacteria, as well as against the yeast Candida albicans, as well as antimicrobial agent activity toward Enterobacter, Pseudomonas aeruginosa, E. coli, and Staphylococcus epidermidis. Antiinflammatory and analgesic [6][7][8][9], antifungal [10][11][12], antimicrobial [8,9], anticancer [16,17], anti HIV [18][19][20], antioxidant [21,22], antiviral [23,24], antitubercular [25,26], antihypertensive [27][28][29], and antihistaminic [30]. All of these biological activities for indole and its derivatives, particularly insecticidal activity against some pests [31], lead to the selection of indole and its derivatives for further toxicological investigations to demonstrate their activity toward some dangerous pests such as Cowpea aphid.…”

Section: Introductionmentioning

confidence: 99%

Green chemistry approach for rapid synthesis of indol-3-yl-4H-pyran derivatives, biological assessments, and toxicological activities against Cowpea aphid (Aphis craccivora)

M. Abd El-Lateef,

S. Kamel,

Yahya Abdullah Alzahrani

et al. 2024

Bull. Chem. Soc. Eth.

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From diverse or indole-3-carbaldehyde, certain unique indol-3-yl-4H-pyran derivatives were generated by condensing with different nucleophiles. IR, 1HNMR, and elemental studies have all confirmed their chemical structures. The green catalyst for the formation of indol-3-yl-4H-pyran derivatives is a zinc-linked amino acid complex [Zn(L-proline)2]. Furthermore, the environmental friendliness of this synthetic technique was investigated by assessing the reusability of the Zn(L-proline)2 complex over five consecutive cycles with no significant loss of catalytic activity. This novel process has showed substantial advantages in terms of safety, simplicity, stability, mild conditions, a short reaction time, excellent yields, and good purity without the use of organic solvents. The antibacterial properties of the compounds produced were investigated and discovered to be promising. To determine whether compounds are appropriate as possible insecticidal agents, the toxicological activity of the synthesized compounds against Cowpea aphid, Aphis craccivora, was tested using leaf dip bioassay technique toxicity studies performed in the laboratory. KEY WORDS: One pot synthesis, Zn(L-proline)2, Indole-3-carbaldehyde, Aqueous media, Microwave irradiation, Cowpea aphid, toxicological activity Bull. Chem. Soc. Ethiop. 2024, 38(4), 1077-1090. DOI: https://dx.doi.org/10.4314/bcse.v38i4.21

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“…In addition, photocatalysis is beneficial as a small amount of photocatalyst is needed for the abundant and available sunlight which is the light source [1]. As one of the most widely used semiconductors, zinc oxide (ZnO) is considered as an effective photocatalyst for the degradation of organic pollutants [8]. Indeed, ZnO nanoparticles (ZnO NPs) are especially used in the field of photocatalysis because of its stable physical and chemical properties, its non-toxicity, and relatively low cost [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Effect of synthesized carbon quantum dots on the photocatalytic properties of ZnO

Williams¹,

Fodjo²,

Narcisse³

et al. 2022

Bull. Chem. Soc. Eth.

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ABSTRACT. In this work, synthesized carbon quantum dots (CQDs) and zinc oxide nanoparticles (ZnO NPs) are used to form ZnO/CQDs nanocomposite. The characterization of this nanocomposite using X-ray diffraction (XRD) indicates that ZnO NPs and ZnO/CQDs nanocomposite have the same profile, suggesting that the presence of CQDs does not impinge the crystal structure of ZnO in ZnO/CQDs nanocomposite. Besides, an analysis performed with scanning electron microscopy (SEM) displays plate-like nanostructure with an average thickness of about 22 nm and 25 nm for ZnO NPs and ZnO/CQDs, respectively. Furthermore, the reflectance study in the visible range shows a reduction of sunlight reflection intensity of ZnO/CQDs compared with the reflection intensity of ZnO NPs. In addition, the photocatalytic studies indicate that the rate of photocatalytic degradation of methylene blue (MB) of ZnO/CQDs nanocomposites is higher than that of ZnO NPs. Indeed, in optimized conditions, the photocatalytic activity can reach 100% within 45 min of sunlight exposure for the degradation of 7.5 mg/L MB using ZnO/CQDs while it takes 90 min using ZnO NPs under the same conditions. These fascinating results is attributed to the reduction of the reflective properties of ZnO/CQDs. KEY WORDS: Fluorescent carbon quantum dots (CQDs), Photocatalytic degradation of methylene blue, Sunlight reflectance property, Synthesis of ZnO nanoparticles Bull. Chem. Soc. Ethiop. 2023, 37(2), 463-476. DOI: https://dx.doi.org/10.4314/bcse.v37i2.15

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Photocatalytic degradation efficiency of azo dye in aqueous phase using different photo catalysts

Cited by 5 publications

References 8 publications

N and Fe doped NiO nanoparticles for enhanced photocatalytic degradation of azo dye methylene blue in the presence of visible light

N and Fe doped NiO nanoparticles for enhanced photocatalytic degradation of azo dye methylene blue in the presence of visible light

Green chemistry approach for rapid synthesis of indol-3-yl-4H-pyran derivatives, biological assessments, and toxicological activities against Cowpea aphid (Aphis craccivora)

Effect of synthesized carbon quantum dots on the photocatalytic properties of ZnO

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