2D-Bi4NbO8Cl nanosheet for efficient photocatalytic degradation of tetracycline in synthetic and real wastewater under visible-light: Influencing factors, mechanism and degradation pathway

Majumdar, Ankush; Ghosh, Utpal; Pal, Anjali

doi:10.1016/j.jallcom.2021.163400

Cited by 24 publications

(4 citation statements)

References 45 publications

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“…Different concentrations (2_10 mgL -1 ) of MLT and (10_50 mg L -1 ) of γ-HCH were studied to evaluate photocatalytic performance (Figure S4). With an increase in the concentration of targeted pesticides, limited interaction was observed on the surface of catalyst active sites, leading to de ciency of hydroxyl radicals and reduction in the degradation rate (Yadav et al, 2022;Majumdar et al, 2022). Escalating the initial concentration decreases the path length of the photon that falls on the surface of the photo-active catalyst (the Beer-lambert law) and reduces the excitation of electrons from lower energy band to higher energy band.…”

Section: Photocatalytic Performance Studiesmentioning

confidence: 99%

Efficient photo-adsorptive eradication of endocrine disrupting pesticides by chitosan co- decorated metal oxide bio-nanocomposite

Yadav

Rani

Zhang

et al. 2023

Environ Sci Pollut Res

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Extensive consumption, toxicity, and bioaccumulation of malathion (MLT) and lindane (γ-HCH) pesticides collectively attract the world's attention. Herein, the nanocomposite of chitosan wrapped NiO@ZnO was synthesized by a green methodology using Azadirachta indica leaves extract. Structural and morphological analysis of chitosan-NiO@ZnO showed hollow sphere-ake shaped image adsorbed on a solid chitosan surface with a large surface area of 73 m 2 g -1 . A decrease in values of lattice strain, dislocation density and crystallite size described the imperfection in crystal geometry and new peaks in FT-IR spectra at 698 cm -1 and 448 cm -1 of Ni-N and Zn-N, respectively con rms the coupling. The chitosan-NiO@ZnO nanocomposite with a reduced band gap due to the generation of new energy levels in the vicinity of of conduction and valence band. Chitosan-NiO@ZnO and individuals nanoparticles (NiO and ZnO) were well-characterized and utilized for degradation MLT and γ-HCH under direct sunlight and dark conditions. The highest degradation of pesticides (above 94%) resulted with 2 mg L -1 and 10 mg L -1 of MLT (π_π) and γ-HCH, respectively with a 20 mg catalyst dose, and pH of ~7 under daylight exposure (5 h). Chitosan-NiO@ZnO substantially suppressed the half-life of the targeted pesticides (MLT: 0.48 h; HCH 0.51 h) and demonstrated the rst-order kinetics with a high adsorption capacity, X m (MLT: 14.5 mg g -1 and γ-HCH 20.7 mg g -1 ), which also con rmed the strong binding with the pesticides, followed by their conversion into safer and smaller metabolites. The charge separation mechanism was elucidated by UV re ectance and photoluminescence data. Hydroxyl radicals were most frequently responsible for the degradation of pesticides as con rmed by scavenger analysis. The synthesized green-nano photocatalyst showed high reusability (up to 10 th cycles), sensitivity, and stability within the degradation process, presumably making it suitable for industrial applications.

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Section: Photocatalytic Performance Studiesmentioning

confidence: 99%

Efficient photo-adsorptive eradication of endocrine disrupting pesticides by chitosan co- decorated metal oxide bio-nanocomposite

Yadav

Rani

Zhang

et al. 2023

Environ Sci Pollut Res

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“…28,29 However, a higher temperature during the calcination process causes the full diffusion of the elements, which will inevitably affect synthetic materials. 25 Therefore, it is necessary to study the effect of the chosen molten salt material on the target product.…”

Section: Introductionmentioning

confidence: 99%

“…23,24 Based on this, the molten-salt synthesis (MSS) method has been widely used for the fabrication of Sillén–Aurivillius oxyhalides given that it can offer a special liquid reaction environment that expedites the diffusion rate of reactive elements and motivates the formation of high-purity and uniform reaction products. 25,26 Because Sillén–Aurivillius oxyhalides contain halogen elements (F, Cl, Br, and I), most Bi-based materials are grown with the same molten salt as halogen. For example, Zhizhong Chen et al used NaCl/CsCl as the molten salt to synthesize Bi 4 NbO 8 Cl.…”

Section: Introductionmentioning

confidence: 99%

New insights into the synthesis of Sillén–Aurivillius oxyhalides: molten salts induce interlayer halogen competing reaction

Zhang,

Zhou,

et al. 2024

J. Mater. Chem. A

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“…All three techniques typically have high cost and energy consumption limitations, while homogeneous transition-metal activation has the drawbacks of low stability and heavy metal ion leaching. , Nonmetallic components have a tendency to agglomerate and are challenging to recover . PMS is a commercial chemical oxidant widely used in chemical synthesis and environmental remediation, which produces strongly oxidizing SO 4 •– and • OH to degrade organic pollutants in water.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Heterogeneous Catalytic Activity of Peroxymonosulfate for Rhodamine B Degradation via a Co^II-Based Metal–Organic Framework

Zhang

Chai

et al. 2023

Inorg. Chem.

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A stable metal–organic framework with the formula {[Co(BBZB)(IPA)]·H2O} n (JXUST-23, BBZB = 4,7-bis(1H-benzimidazole-1-yl)-2,1,3-benzothiadiazole and H2IPA = isophthalic acid) was constructed by incorporating Co2+ ions and two conjugated ligands under solvothermal conditions. JXUST-23 takes a dinuclear cluster-based layer structure with a porosity of 2.7%. In this work, JXUST-23 was used to activate peroxymonosulfate (PMS) to degrade rhodamine B (RhB), a difficult-to-degrade pollutant in water. Compared with pure PMS or JXUST-23, the JXUST-23/PMS system displays the best degradation ability of RhB in neutral solution. When the mass ratio of JXUST-23 to PMS was 2:3, 99.72% of RhB (50 ppm) was removed within 60 min, and the reaction rate was 0.1 min–1. Furthermore, free radical quenching experiments show that SO4 •– was the main free radical during the process of RhB degradation. In addition, JXUST-23 exhibits good reusability for the degradation of the organic dye RhB, making it a potential candidate for environmental remediation.

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2D-Bi4NbO8Cl nanosheet for efficient photocatalytic degradation of tetracycline in synthetic and real wastewater under visible-light: Influencing factors, mechanism and degradation pathway

Cited by 24 publications

References 45 publications

Efficient photo-adsorptive eradication of endocrine disrupting pesticides by chitosan co- decorated metal oxide bio-nanocomposite

Efficient photo-adsorptive eradication of endocrine disrupting pesticides by chitosan co- decorated metal oxide bio-nanocomposite

New insights into the synthesis of Sillén–Aurivillius oxyhalides: molten salts induce interlayer halogen competing reaction

Enhanced Heterogeneous Catalytic Activity of Peroxymonosulfate for Rhodamine B Degradation via a Co^II-Based Metal–Organic Framework

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2D-Bi4NbO8Cl nanosheet for efficient photocatalytic degradation of tetracycline in synthetic and real wastewater under visible-light: Influencing factors, mechanism and degradation pathway

Cited by 24 publications

References 45 publications

Efficient photo-adsorptive eradication of endocrine disrupting pesticides by chitosan co- decorated metal oxide bio-nanocomposite

Efficient photo-adsorptive eradication of endocrine disrupting pesticides by chitosan co- decorated metal oxide bio-nanocomposite

New insights into the synthesis of Sillén–Aurivillius oxyhalides: molten salts induce interlayer halogen competing reaction

Enhanced Heterogeneous Catalytic Activity of Peroxymonosulfate for Rhodamine B Degradation via a CoII-Based Metal–Organic Framework

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Enhanced Heterogeneous Catalytic Activity of Peroxymonosulfate for Rhodamine B Degradation via a Co^II-Based Metal–Organic Framework