Novel metal-free intercalation of g-C3N4 using hyperbranched copolymer for efficient photocatalytic degradation of tetracycline

Tuna, Özlem; Şimşek, Esra Bilgin; Dashan, Irem; Temel, Gokhan

doi:10.1016/j.jphotochem.2020.112519

Cited by 20 publications

(2 citation statements)

References 38 publications

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“…Further, 4-amino-3,6,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carbaldehyde was formed by demethylation. Ring-opening reactions lead to the formation of CO 2 , NH 3 , and other simple products, thereafter [ 52 ]. In the second route dihydroxylation leads to the formation of 3,10,12,12a-tetrahydroxy-6-methyl-3,4,4a,5a,6,12a-hexahydrotetracene-1,11(2H,5H)-dione followed by the abstraction of NCH 3 group from 4-(dimethylamino)-3,6,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-1,4,4a,5,5a,6,11,12a-octahydrotetracene-2-carboxamide.…”

Section: Resultsmentioning

confidence: 99%

Revolutionizing the Role of Solar Light Responsive BiVO4/BiOBr Heterojunction Photocatalyst for the Photocatalytic Deterioration of Tetracycline and Photoelectrocatalytic Water Splitting

Singla,

Devi,

Basu

2023

Materials

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In this study, a series of BiVO4/BiOBr composites with varying mole ratios were successfully synthesized using a hydrothermal method. The in-situ synthesis strategy facilitated the formation of a close interfacial contact between BiVO4 and BiOBr at the depletion zone, resulting in improved charge segregation, migration, reduced charge recombination, enhanced solar light absorption capacity, promoting narrow band gap, and large surface area. This study investigates the influence of different mole ratios of BiVO4 and BiOBr in a BiVO4/BiOBr nanocomposite on the photocatalytic degradation of tetracycline (TC), a pharmaceutical pollutant, and photoelectrocatalytic water splitting (PEC) under solar light irradiation. Maximum decomposition efficiency of ~90.4% (with a rate constant of 0.0159 min−1) for TC was achieved with 0.5 g/L of 3:1 BiVO4: BiOBr (31BVBI) photocatalyst within 140 min. The degraded compounds resulting from the TC abatement were analyzed using GC-MS. Furthermore, TC standards exhibited 78.2% and 87.7% removal of chemical oxygen demand (COD) and total organic carbon (TOC), respectively, while TC tablets showed 64.6% COD removal and 73.8% TOC removal. The PEC water splitting experiments demonstrated that the 31BVBI photoanode achieved the highest photocurrent density of approximately 0.2198 mA/cm2 at 1.23 V vs. RHE, resulting in the generation of approximately 1.864 mmolcm−2 s−1 of hydrogen, while remaining stable for 21,600 s. The stability of the photocatalyst was confirmed by post-degradation characterizations, which revealed intact crystalline planes, shape, and surface area. Comparisons with existing physicochemical methods used in industries indicate that the reported photocatalyst possesses strong surface catalytic properties and has the potential for application in industrial wastewater treatment and hydrogen generation, offering an advantageous alternative to costly and time-consuming processes.

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Section: Resultsmentioning

confidence: 99%

Revolutionizing the Role of Solar Light Responsive BiVO4/BiOBr Heterojunction Photocatalyst for the Photocatalytic Deterioration of Tetracycline and Photoelectrocatalytic Water Splitting

Singla,

Devi,

Basu

2023

Materials

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“…Aydin et al (11) found that existing wastewater treatment plants (WWTPs) by utilizing conventional physical and biological treatment had shown inadequate removal of antibiotics. The current efficiencies of removing antibiotics by the existing water-treatment plants are 76 and 36%, respectively in summer and winter seasons at Turkey. Though antibiotics concentration after discharging from WWTPs was reduced substantially, the concentration of antibiotics residues was still traceably higher (ng/Lµg/L level) and at this level, they are often called as the "micropollutants" which are still a serious threat to the environment and healthcare (16)(17)(18).…”

Section: Introductionmentioning

confidence: 99%

The upsurge of photocatalysts in antibiotic micropollutants treatment: Materials design, recovery, toxicity and bioanalysis

Davies

Cherif

Pazhani

et al. 2021

Journal of Photochemistry and Photobiology C: Photochemistry Re

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Construction of novel Zn2TiO4/g-C3N4 Heterojunction with efficient photodegradation performance of tetracycline under visible light irradiation

Tuna

Şimşek

2020

Environ Sci Pollut Res

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Novel metal-free intercalation of g-C3N4 using hyperbranched copolymer for efficient photocatalytic degradation of tetracycline

Cited by 20 publications

References 38 publications

Revolutionizing the Role of Solar Light Responsive BiVO4/BiOBr Heterojunction Photocatalyst for the Photocatalytic Deterioration of Tetracycline and Photoelectrocatalytic Water Splitting

Revolutionizing the Role of Solar Light Responsive BiVO4/BiOBr Heterojunction Photocatalyst for the Photocatalytic Deterioration of Tetracycline and Photoelectrocatalytic Water Splitting

The upsurge of photocatalysts in antibiotic micropollutants treatment: Materials design, recovery, toxicity and bioanalysis

Construction of novel Zn2TiO4/g-C3N4 Heterojunction with efficient photodegradation performance of tetracycline under visible light irradiation

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