Millettia pinnata plant pod extract-mediated synthesis of Bi2O3 for degradation of water pollutants

Meena, Parmeshwar Lal; Surela, Ajay Kumar; Saini, Jitendra Kumar; Chhachhia, Lata Kumari

doi:10.1007/s11356-022-21435-z

Cited by 38 publications

(3 citation statements)

References 85 publications

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“…The pH plays a crucial role in the photodegradation process of MB dye facilitated by PANI/KNO nanocomposites as catalysts. The surface charge of the nanocomposites is intricately tied to the pH of the solution, impacting the electrostatic interactions between the catalyst and MB molecules during adsorption 72,135,136 . The catalytic activity of catalyst is pH‐dependent, influencing the availability of active sites for the photogenerated charge carriers crucial for the degradation reactions.…”

Section: Resultsmentioning

confidence: 99%

“…Percentage degradation (%) after 120 min k (min molecules during adsorption. 72,135,136 The catalytic activity of catalyst is pH-dependent, influencing the availability of active sites for the photogenerated charge carriers crucial for the degradation reactions. The pH conditions also affect the generation of reactive oxygen species, such as hydroxyl radicals, pivotal in breaking down the dye molecules.…”

Section: Sample Namementioning

confidence: 99%

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Photocatalytic activity of polyaniline‐potassium doped nickel oxide nanocomposites: A comprehensive investigation on multifaceted properties

Bhankhar,

Saini,

Sehrawat

et al. 2024

J of Applied Polymer Sci

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Polyaniline‐potassium doped nickel oxide nanocomposites (PANI/KNO) were efficiently synthesized via an in situ chemical oxidation method, meticulously confirmed by comprehensive x‐ray diffraction, Fourier transformation infrared spectroscopy, energy dispersive x‐ray spectroscopy, selected area electron diffraction, and x‐ray photoelectron spectroscopy analyses. The crystallite size and strain exhibited distinct behaviors, while field emission scanning electron microscopy revealed a blend of irregular spherical shapes and nanofibers, further confirmed by high resolution transmission electron microscopy. These composites exhibited significantly enhanced thermal stability, surpassing PANI by 1.39 times, and showcased a band gap exceeding 3 eV, along with multiple photoluminescence peaks at room temperature (RT). Moreover, their RT AC conductivity experienced a remarkable surge by 4.91 times compared to pure polyaniline. Jonscher's Power Law model and the Havriliak–Negami relaxation model are employed to elucidate the electrical properties of composite materials. The composites displayed nonDebye relaxation behavior with increased conductivity, as observed through impedance analysis, electrical modulus evaluation, and dielectric constant assessment. Additionally, evident superparamagnetic properties and multiple magnetic domains further contributed to their effectiveness. The PANI/KNO composite demonstrated photocatalytic efficiency, achieving over 90% degradation of methylene blue dye across four cycles, thus highlighting its superior photostability. Furthermore, investigations into its response to pH variations and scavenger activity underscored its immense potential for highly effective photocatalytic applications.

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Section: Resultsmentioning

confidence: 99%

Section: Sample Namementioning

confidence: 99%

Photocatalytic activity of polyaniline‐potassium doped nickel oxide nanocomposites: A comprehensive investigation on multifaceted properties

Bhankhar,

Saini,

Sehrawat

et al. 2024

J of Applied Polymer Sci

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“…Due to high setup costs and low throughput, this wastewater treatment option has not been studied nearly as extensively as others 22 . Metal sulfides are significant photocatalysts that may stimulate several proper redox processes under moderate circumstances 23 . Metal sulfides have lower bandgaps than metal oxides, allowing them to use more visible light 24 .…”

Section: Introductionmentioning

confidence: 99%

Investigation of boron-doped graphene oxide anchored with copper sulphide flowers as visible light active photocatalyst for methylene blue degradation

Ahmad¹,

Zahid²,

Tahir³

et al. 2023

Sci Rep

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The non-biodegradable nature of waste emitted from the agriculture and industrial sector contaminates freshwater reserves. Fabrication of highly effective and low-cost heterogeneous photocatalysts is crucial for sustainable wastewater treatment. The present research study aims to construct a novel photocatalyst using a facile ultrasonication-assisted hydrothermal method. Metal sulphides and doped carbon support materials work well to fabricate hybrid sunlight active systems that efficiently harness green energy and are eco-friendly. Boron-doped graphene oxide-supported copper sulphide nanocomposite was synthesized hydrothermally and was assessed for sunlight-assisted photocatalytic degradation of methylene blue dye. BGO/CuS was characterized through various techniques such as SEM–EDS, XRD, XPS, FTIR, BET, PL, and UV–Vis DRS spectroscopy. The bandgap of BGO-CuS was found to be 2.51 eV as evaluated through the tauc plot method. The enhanced dye degradation was obtained at optimum conditions of pH = 8, catalyst concentration (20 mg/100 mL for BGO-CuS), oxidant dose (10 mM for BGO-CuS), and optimum time of irradiation was 60 min. The novel boron-doped nanocomposite effectively degraded methylene blue up to 95% under sunlight. Holes and hydroxyl radicals were the key reactive species. Response surface methodology was used to analyze the interaction among several interacting parameters to remove dye methylene blue effectively.

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Minting Progress: Multifunctional Bismuth Oxide Nanoparticles via Mentha arvensis extract for Biomedical Advancements

Dandge,

Gade,

Nerlekar

et al. 2024

ChemistrySelect

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To surpass the constraints associated with conventional therapeutic methods in clinical therapy, nanoparticles have been rapidly prepared and developed as a separate treatment method for diseases. In this study, we have synthesized bismuth oxide nanoparticles (BiNPs) using aqueous leaf extract of Mentha arvensis (M. arvensis) as a biogenic approach. The formation of BiNPs was confirmed by the characteristic peak observed at 276 nm in the UV–vis spectrum and PXRD analysis exhibited the crystalline nature with monoclinic phase. The TEM images revealed the quasi‐spherical shape of BiNPs with an average particle size of 12 nm. For biomedical studies, BiNPs exhibited significant cytotoxicity against A431 cell line (lung cancer) with IC50 value of 92.45 µg/mL. Further studies revealed significantly higher apoptosis, antibacterial, anti‐inflammatory, antidiabetic, and antioxidant activities of the biosynthesized BiNPs. The collective results from the study suggest that the M. arvensis mediated synthesis of multifunctional BiNPs enhances their biological potential, positioning it as a potential candidate for the multimodal therapeutic applications.

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Millettia pinnata plant pod extract-mediated synthesis of Bi2O3 for degradation of water pollutants

Cited by 38 publications

References 85 publications

Photocatalytic activity of polyaniline‐potassium doped nickel oxide nanocomposites: A comprehensive investigation on multifaceted properties

Photocatalytic activity of polyaniline‐potassium doped nickel oxide nanocomposites: A comprehensive investigation on multifaceted properties

Investigation of boron-doped graphene oxide anchored with copper sulphide flowers as visible light active photocatalyst for methylene blue degradation

Minting Progress: Multifunctional Bismuth Oxide Nanoparticles via Mentha arvensis extract for Biomedical Advancements

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