Simple and efficient synthesis of graphite nanocomposites with hydrophobic cobalt ferrite nanoparticles

Rathimeena, Murugan; Ponvel, Kanagasabai Muruganandam; Chavali, Murthy

doi:10.1007/s41779-020-00552-3

Cited by 7 publications

(5 citation statements)

References 47 publications

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“…The optical band gap value of the produced nanoparticles was calculated using the Tauc relationship [31] . The optical bandgap energy value of nanoparticles is depicted in Figures 1(c) and (d).…”

Section: Resultsmentioning

confidence: 99%

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Fabrication of Carbon‐Based ZnBi₂S₄ and ZnBi₂Se₄ Nanocomposites for Photocatalytic and Electrochemical Applications

Jasmine,

Muruganandam Ponvel

2023

ChemistrySelect

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Metal chalcogenide nanoparticles are widely used to degrade environmental pollutants. Zinc‐Bismuth Chalcogenide/Carbon (ZnBi2S4/Carbon and ZnBi2Se4/Carbon) nanocomposites were synthesized and the surface was covered with sucrose before carbonization to yield carbon nanocomposites. The solar irradiation is used to convert sucrose into carbon nanocomposites. The as‐synthesized nanocomposites were well characterized in detail in terms of their structural, morphological, functional, and optical properties. Nanocomposites are well‐known and frequently show excellent characteristics in all domains, including photocatalysis and electrochemical applications. The superior electron transfer capability, improved light harvesting, and increased catalytic active sites were said to play a crucial role in the bandgap contribution to the improved photocatalytic activity. The degradation of dyes like Methylene Blue (MB), Methyl Orange (MO), and Rhodamine B (RhB) in solution under sunlight irradiation was used to investigate the photocatalytic activities of the nanocomposites. Pseudo‐first‐order kinetic theory was followed. Specific capacitances of nanocomposites are 659.479 F/g and 871.198 F/g at 25 mV/s for ZnBi2S4/Carbon and ZnBi2Se4/Carbon nanocomposites, respectively.

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Section: Resultsmentioning

confidence: 99%

“…The optical band gap value of the produced nanoparticles was calculated using the Tauc relationship. [31] The optical bandgap energy value of nanoparticles is depicted in Figures 1(c) and (d). Kubelka-Munk theory was utilized to figure out the bandgap energy, which is displayed as follows:…”

Section: Optical Propertiesmentioning

confidence: 99%

Fabrication of Carbon‐Based ZnBi₂S₄ and ZnBi₂Se₄ Nanocomposites for Photocatalytic and Electrochemical Applications

Jasmine,

Muruganandam Ponvel

2023

ChemistrySelect

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“…The optical bandgap energy value of nanoparticles was shown in Figure 1b. The bandgap energy was calculated using Kubelka-Munk theory, [24] which is represented as follows (Equation 1):…”

Section: Resultsmentioning

confidence: 99%

“…The optical bandgap energy value of nanoparticles was shown in Figure 1b. The bandgap energy was calculated using Kubelka‐Munk theory, [24] which is represented as follows (Equation 1:

\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr {\rm F}({\rm R})={\rm \alpha} (1\hbox{-}{\rm R}){^{2}}\hfill\cr}}

…”

Section: Resultsmentioning

confidence: 99%

Sunlight‐induced Photocatalytic Degradation of Methylene Blue Dye by Magnesium and Silver‐based Cadmium Sulfide Nanoparticles

Jasmine

Ponvel

2022

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The photodegradation activity of nanomaterials is generally studied and used for water purification purposes. The present investigation reports the synthesis of magnesium and silverbased cadmium sulfide nanoparticles (Mg 2 Ag 2 CdS 4 NPs) with a size of ∼ 25 nm for the degradation of methylene blue (MB) dye. The optical properties of the nanoparticles were studied, and the bandgap energy of the nanoparticles was found to be 2.16 eV. The photocatalytic degradation showed the highest photocatalytic activity (88 %) for 90 min. The effects of operating parameters such as the amount of catalyst, initial pH, and the initial dye concentration were studied. The rate constants for various doses were calculated and followed the pseudo-first order. A 75 % degradation of MB dye was found even after five uses. The photocatalyst can significantly contribute to the removal of hazardous toxic chemicals from aqueous solutions from an environmental point of view.[a] J.

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“…Подставляя граничные значения ПР, можно оценить пределы пороговой концентрации образования нанофазы основного ацетата меди при взаимодействии ацетата меди и гидрокарбоната натрия при мольном соотношении 1:1.2 в водном растворе в отсутствии ПАВ: Следовательно, образование и последующая стабилизация нанофазы основного ацетата меди обусловлена не только адсорбцией ПАВ на поверхности наночастиц, препятствующих их агрегации, но и мицеллообразованием ПАВ и, по-видимому, другими сложными процессами физико-химического взаимодействия, которые потребуют дополнительных исследований. Наблюдаемое явление согласуется с ранее полученными результатами по синтезу наночастиц ферритов кобальта и никеля в прямых мицеллах ДСН [17,18,19].…”

Section: результаты и их обсуждениеunclassified

Formation of Basic Copper Acetate Nanophase and Its Stabilization in Aqueous Micellar Surface Solutions

Агеева¹,

Borshch²,

Kuvardin³

et al. 2021

Вестник Тверского Государственного Университета. Серия: Химия

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При взаимодействии ацетата меди с гидрокарбонатом натрия в воде и водных мицеллярных растворах ПАВ наблюдается образование нанофазы основного ацетата меди. Методами светодинамического рассеяния, малоугловой рентгеновской дифракции и спектрофотометрии показано, что в этих случаях образуются наночастицы основного ацетата меди со сложной картиной распределения по размерам в интервале до 60 нм. Проведение реакции в водных мицеллярных растворах ПАВ приводит к седиментационной устойчивости нанофазы, зависящей от концентрации и природы ПАВ. Определена расчетная пороговая и экспериментальная начальная концентрация ацетата меди при взаимодействии с гидрокарбонатом натрия в воде и водных мицеллярных растворах ПАВ, при которых образуется нанофаза основного ацетата меди. Сформулированы условия получения наноразмерной устойчивой суспензии основного ацетата меди, которая может служить основой лечебной противоожоговой и ранозаживляющей композиции. When copper acetate interacts with sodium bicarbonate in water and aqueous micellar solutions of surfactants, the formation of a nanophase of basic copper acetate is observed. It has been shown by the methods of dynamic light scattering, small-angle X-ray diffraction and spectrophotometry that in these cases nanoparticles of basic copper acetate are formed with a complex pattern of size distribution in the range of up to 60 nm. Carrying out the reaction in aqueous micellar surfactant solutions leads to sedimentation stability of the nanophase, which depends on the concentration and nature of the surfactant. The calculated threshold and experimental initial concentration of copper acetate in the interaction with sodium bicarbonate in water and aqueous micellar solutions of surfactants, at which the nanophase of basic copper acetate is formed. The conditions for obtaining a nanoscale stable suspension of basic copper acetate, which can serve as the basis for a therapeutic anti-burn and wound-healing composition, are formulated.

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Simple and efficient synthesis of graphite nanocomposites with hydrophobic cobalt ferrite nanoparticles

Cited by 7 publications

References 47 publications

Fabrication of Carbon‐Based ZnBi₂S₄ and ZnBi₂Se₄ Nanocomposites for Photocatalytic and Electrochemical Applications

Fabrication of Carbon‐Based ZnBi₂S₄ and ZnBi₂Se₄ Nanocomposites for Photocatalytic and Electrochemical Applications

Sunlight‐induced Photocatalytic Degradation of Methylene Blue Dye by Magnesium and Silver‐based Cadmium Sulfide Nanoparticles

Formation of Basic Copper Acetate Nanophase and Its Stabilization in Aqueous Micellar Surface Solutions

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Simple and efficient synthesis of graphite nanocomposites with hydrophobic cobalt ferrite nanoparticles

Cited by 7 publications

References 47 publications

Fabrication of Carbon‐Based ZnBi2S4 and ZnBi2Se4 Nanocomposites for Photocatalytic and Electrochemical Applications

Fabrication of Carbon‐Based ZnBi2S4 and ZnBi2Se4 Nanocomposites for Photocatalytic and Electrochemical Applications

Sunlight‐induced Photocatalytic Degradation of Methylene Blue Dye by Magnesium and Silver‐based Cadmium Sulfide Nanoparticles

Formation of Basic Copper Acetate Nanophase and Its Stabilization in Aqueous Micellar Surface Solutions

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Fabrication of Carbon‐Based ZnBi₂S₄ and ZnBi₂Se₄ Nanocomposites for Photocatalytic and Electrochemical Applications

Fabrication of Carbon‐Based ZnBi₂S₄ and ZnBi₂Se₄ Nanocomposites for Photocatalytic and Electrochemical Applications