Photocatalytic Degradation of 4-tert-butylphenol Using Solar Light Responsive Ag2CO3

Mergenbayeva, Saule; Atabaev, Timur Sh.; Vakros, John; Mantzavinos, Dionissios; Poulopoulos, Stavros G.

doi:10.3390/catal12121523

Cited by 7 publications

(4 citation statements)

References 72 publications

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“…Dhaka et al [40] calculated the E EO for the degradation of ethylparaben (5 mg L −1 ), in 100 mL solutions for 90 min, using different oxidants under UVC radiation: persulfate, hydrogen peroxide, and peroxymonosulfate, which were, respectively, 61.0, 68.7, and 143.7 kWh m −3 . Regarding photocatalysis, Mergenbayeva et al [41] applied Ag 2 CO 3 in UVA and visible (300-600 nm) photocatalysis of 5 mg L −1 of 4-tert-Butylphenol, a contaminant with an aromatic structure similar to parabens. In this study, E EO of 9.1 and 8.3 kWh m −3 were found for the UVA and visible reactions, respectively.…”

Section: Photocatalytic Oxidation Under Different Radiationsmentioning

confidence: 99%

g-C3N4 for Photocatalytic Degradation of Parabens: Precursors Influence, the Radiation Source and Simultaneous Ozonation Evaluation

et al. 2023

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Graphitic carbon nitride (g-C3N4) is a promising catalyst for contaminants of emerging concern removal applications, especially as a visible-light-driven material. In this study, g-C3N4 catalysts were effectively synthesized through a simple thermal polymerization method, using melamine, urea, and thiourea as precursors to elucidate the influence of these compounds on the final product’s photocatalytic performance. The degradation of a mixture of three parabens was investigated under different types of radiation: two artificial, ultraviolet-A (UVA) and visible LED, and natural sunlight. The urea-based catalyst (UCN) presented better results under all radiation sources, followed by thiourea, and finally, melamine. Among the artificial light sources, the degradation of parabens under UVA was considerably higher than visible—up to 51% and 21%, respectively—using UCN; however, the broader spectrum of natural sunlight was able to achieve the highest removals, up to 92%, using UCN. Comparing artificial radiation sources, UVA lamps presented 45% lower energy consumption and associated costs. Photocatalytic ozonation was tested using UCN and MCN, with UCN once more possessing superior performance and a synergetic effect between photocatalysis and ozonation, with complete removal under 12 min. The use of g-C3N4 was then successfully tested in initial screening and found to be an efficient alternative in more low-cost and feasible solar photocatalysis water treatment.

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Section: Photocatalytic Oxidation Under Different Radiationsmentioning

confidence: 99%

g-C3N4 for Photocatalytic Degradation of Parabens: Precursors Influence, the Radiation Source and Simultaneous Ozonation Evaluation

et al. 2023

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“…Catalysts 2024, 14, 147 2 of 16 Hence, there is a need for an effective method to eliminate it from water. Recently, various approaches have been used to treat SMX-containing wastewater [14].…”

Section: Introductionmentioning

confidence: 99%

“…Heterogeneous photocatalysis has received growing attention for the effective degradation and mineralization of persistent organic pollutants [15,16]. Different catalysts have been investigated to degrade SMX under the use of light irradiation.…”

Section: Introductionmentioning

confidence: 99%

TiO2/Zeolite Composites for SMX Degradation under UV Irradiation

Mergenbayeva,

Abitayev,

Batyrbayeva

et al. 2024

Catalysts

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Sulfamethoxazole (SMX) is a common antibiotic that is considered an emerging pollutant of water bodies, as it is toxic for various aquatic species. TiO2-based photocatalysis is a promising method for SMX degradation in water. In this work, TiO2/zeolite (Z-45 loaded with TiO2 labeled as TZ and ZSM-5 loaded with TiO2 labeled as TZSM) composites were prepared by mechanical mixing and liquid impregnation methods, and the photocatalytic performance of these composites (200 mg·L−1) was investigated toward the degradation of SMX (30 mg·L−1) in water under UV light (365 nm). The pseudo-first-order reaction rate constant of the TZSM1450 composite was 0.501 min−1, which was 2.08 times higher than that of TiO2 (k = 0.241 min−1). Complete SMX degradation was observed in 10 min using the UV/TZSM1450 system. The mineralization ability in terms of total organic carbon (TOC) removal was also assessed for all of the prepared composites. The results showed that 65% and 67% of SMX could be mineralized within 120 min of photocatalytic reaction by TZSM2600 and TZSM1450, respectively. The presence of and anions inhibited the degradation of SMX, while the presence of had almost no effect on the degradation efficiency of the UV/TZSM1450 system. The electrical energy per order estimated for the prepared composites was in the range of 68.53–946.48 kWh m−3 order−1. The results obtained revealed that the TZSM1450 composite shows promising potential as a photocatalyst for both the degradation and mineralization of SMX.

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“…Silver aging and ion-release potential correlate with the particle size, oxidation rate [ 15 , 16 , 17 , 18 , 19 ] as well as synthesis conditions [ 10 ], whereby the oxidation is triggered by the contact of silver with an aqueous solution or higher temperature following in the sequence Ag(0) > Ag(I) > Ag(II) [ 20 , 21 , 22 ]. Silver oxidation at suitable water solutions and environmental conditions, including accessibility to atmospheric water vapor, promotes the crystallization of Ag 2 CO 3 [ 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Microwave Irradiation vs. Structural, Physicochemical, and Biological Features of Porous Environmentally Active Silver–Silica Nanocomposites

Strach

Dulski²,

Wasilkowski

et al. 2023

IJMS

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Heavy metals and other organic pollutants burden the environment, and their removal or neutralization is still inadequate. The great potential for development in this area includes porous, spherical silica nanostructures with a well-developed active surface and open porosity. In this context, we modified the surface of silica spheres using a microwave field (variable power and exposure time) to increase the metal uptake potential and build stable bioactive Ag2O/Ag2CO3 heterojunctions. The results showed that the power of the microwave field (P = 150 or 700 W) had a more negligible effect on carrier modification than time (t = 60 or 150 s). The surface-activated and silver-loaded silica carrier features like morphology, structure, and chemical composition correlate with microbial and antioxidant enzyme activity. We demonstrated that the increased sphericity of silver nanoparticles enormously increased toxicity against E. coli, B. cereus, and S. epidermidis. Furthermore, such structures negatively affected the antioxidant defense system of E. coli, B. cereus, and S. epidermidis through the induction of oxidative stress, leading to cell death. The most robust effects were found for nanocomposites in which the carrier was treated for an extended period in a microwave field.

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Photocatalytic Degradation of 4-tert-butylphenol Using Solar Light Responsive Ag2CO3

Cited by 7 publications

References 72 publications

g-C3N4 for Photocatalytic Degradation of Parabens: Precursors Influence, the Radiation Source and Simultaneous Ozonation Evaluation

g-C3N4 for Photocatalytic Degradation of Parabens: Precursors Influence, the Radiation Source and Simultaneous Ozonation Evaluation

TiO2/Zeolite Composites for SMX Degradation under UV Irradiation

Microwave Irradiation vs. Structural, Physicochemical, and Biological Features of Porous Environmentally Active Silver–Silica Nanocomposites

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