Efficient eradication of antibiotic and dye by C-dots@zeolite nanocomposites: Performance evaluation, and degraded products analysis

Rathi, Aanchal; Basu, Soumen; Barman, Sanghamitra

doi:10.1016/j.chemosphere.2022.134260

Cited by 15 publications

(5 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Within 120 min reaction time, more than 99% of PNG, more than 90% of COD, and TOC were decreased. In Aanchal Rathi and coworkers' study, metronidazole, COD, and TOC declined 72, 68, and 62%, respectively [ 53 ]. Absorption changes in wavelength scanning during the reaction time are presented in ( Fig.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of rGO/Fe0/Fe3O4/TiO2 nanocomposite and application of photocatalytic process in the decomposition of penicillin G from aqueous

Mehralipour¹,

Bagheri²,

Gholami³

2023

Heliyon

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of rGO/Fe0/Fe3O4/TiO2 nanocomposite and application of photocatalytic process in the decomposition of penicillin G from aqueous

Mehralipour¹,

Bagheri²,

Gholami³

2023

Heliyon

View full text Add to dashboard Cite

“…These test can indicate the concentration of organic matter, degree of organic pollution, and treatment efficiency. In the research conducted by Aanchal Rathi and coworkers, it was observed that the levels of metronidazole, COD, and TOC experienced a decrease of 72%, 68%, and 62%, respectively 59 .…”

Section: Cod and Toc Measurementsmentioning

confidence: 99%

Optimizing the Photocatalytic Degradation of 2,4-Dichlorophenoxyacetic Acid Herbicide from Aqueous Solution

Mehralipour,

Motie,

Kermani

2023

Preprint

View full text Add to dashboard Cite

This study focuses on the synthesis of a g-C3N4/Fe3O4 nanocomposite and optimization of PCP in degrading 2,4-D in water. The g-C3N4 and the g-C3N4/Fe3O4 were synthesized using a two-step direct calcination approach and co-precipitation respectively. The quality assessment of the synthesized nanocomposite was conducted through the utilization of XRD, DRS, FTIR, FE-SEM, EDS, elemental mapping, TEM and VSM analytical techniques. The quadratic model has a high F-value (152.27) and low P-value (0.0001), indicating its suitability for explaining the amplification relationship between response values. The optimum parameters for PCP to decompose 2,4-D were determined to be pH~6.5, catalyst dose~16.5 mg/L, reaction time~55.5 min, and initial 2,4-D concentration~52 mg/L (96.11% degradation efficacy). The data showed strong correlation with first-order kinetics (R2>0.95). The efficiency of the PCP is boosted by the existence of a catalyst and photolysis, which creates multiple pathways for 2,4-D breakdown. The PCP exhibited a capacity to diminish COD and TOC by 75% and 63%, respectively. The reaction time decreases with higher light intensity and 2,4-D removal is complete in 45 minutes at 60 mW/cm2. Methanol greatly affects the PCP's scavenging ability. In contrast, the impact of sodium azide was observed to be the least significant and the OH● is deemed as the principal ROS in the PCP. The results show that PO43- reduces efficiency to 72%. The PCP's ability to remove 2,4-D, COD, and TOC remained consistent even after the sixth cycle. The EE/O, 17.3 KW/h.m3.order was calculated. The intermediate products were 2,4-dichlorophenol, 2,6-dichlorophenol, 4,6-dichlororesorcinol, 2-chlorohydroquinone, and 2-chloro-1,4-benzoquinone.

show abstract

“…The removal efficiencies of COD and TOC in the degraded RhB solution were 67.6% and 62.6%, respectively, after 120 min treatment, as seen in Figure 6b(1,2). According to the results of the TOC analysis (Figure 6b(2)), the TOC removal efficiency increased with the extension of the illumination time, and more than 62.6% of the carbon in the RhB solution produced CO 2 products [73,74].…”

Section: Adsorption and Degradation Of Rhb With Bi2o3 Microrodsmentioning

confidence: 99%

“…removal efficiency increased with the extension of the illumination time, and more than 62.6% of the carbon in the RhB solution produced CO2 products [73,74]. The concentration of H + ions in the solution is another key factor for the photodegradation of RhB dyes.…”

Section: Adsorption and Degradation Of Rhb With Bi2o3 Microrodsmentioning

confidence: 99%

Investigation of the Photocatalytic Performance, Mechanism, and Degradation Pathways of Rhodamine B with Bi2O3 Microrods under Visible-Light Irradiation

Ma,

Tang,

et al. 2024

Materials

View full text Add to dashboard Cite

In the present work, the photodegradation of Rhodamine B with different pH values by using Bi2O3 microrods under visible-light irradiation was studied in terms of the dye degradation efficiency, active species, degradation mechanism, and degradation pathway. X-ray diffractometry, polarized optical microscopy, scanning electron microscopy, fluorescence spectrophotometry, diffuse reflectance spectra, Brunauer–Emmett–Teller, X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, UV–visible spectrophotometry, total organic carbon, and liquid chromatography–mass spectroscopy analysis techniques were used to analyze the crystal structure, morphology, surface structures, band gap values, catalytic performance, and mechanistic pathway. The photoluminescence spectra and diffuse reflectance spectrum (the band gap values of the Bi2O3 microrods are 2.79 eV) reveals that the absorption spectrum extended to the visible region, which resulted in a high separation and low recombination rate of electron–hole pairs. The photodegradation results of Bi2O3 clearly indicated that Rhodamine B dye had removal efficiencies of about 97.2%, 90.6%, and 50.2% within 120 min at the pH values of 3.0, 5.0, and 7.0, respectively. In addition, the mineralization of RhB was evaluated by measuring the effect of Bi2O3 on chemical oxygen demand and total organic carbon at the pH value of 3.0. At the same time, quenching experiments were carried out to understand the core reaction species involved in the photodegradation of Rhodamine B solution at different pH values. The results of X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, and X-ray diffractometer analysis of pre- and post-Bi2O3 degradation showed that BiOCl was formed on the surface of Bi2O3, and a BiOCl/Bi2O3 heterojunction was formed after acid photocatalytic degradation. Furthermore, the catalytic degradation of active substances and the possible mechanism of the photocatalytic degradation of Rhodamine B over Bi2O3 at different pH values were analyzed based on the results of X-ray diffractometry, radical capture, Fourier-transform infrared spectroscopy, total organic carbon analysis, and X-ray photoelectron spectroscopy. The degradation intermediates of Rhodamine B with the Bi2O3 photocatalyst in visible light were also identified with the assistance of liquid chromatography–mass spectroscopy.

show abstract

Efficient eradication of antibiotic and dye by C-dots@zeolite nanocomposites: Performance evaluation, and degraded products analysis

Cited by 15 publications

References 56 publications

Synthesis and characterization of rGO/Fe0/Fe3O4/TiO2 nanocomposite and application of photocatalytic process in the decomposition of penicillin G from aqueous

Synthesis and characterization of rGO/Fe0/Fe3O4/TiO2 nanocomposite and application of photocatalytic process in the decomposition of penicillin G from aqueous

Optimizing the Photocatalytic Degradation of 2,4-Dichlorophenoxyacetic Acid Herbicide from Aqueous Solution

Investigation of the Photocatalytic Performance, Mechanism, and Degradation Pathways of Rhodamine B with Bi2O3 Microrods under Visible-Light Irradiation

Contact Info

Product

Resources

About