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129 results on '"Mashkoor, Fouzia"'

27. A Facile Synthesis of RGO-Ag 2 MoO 4 Nanocomposites for Efficient Lead Removal from Aqueous Solution.

Author

Shoeb, Mohd, Mashkoor, Fouzia, Khan, Mohmmad Naved, and Jeong, Changyoon

Subjects
*GRAPHENE oxide, *WATER purification, *ENVIRONMENTAL management, *SILVER oxide, *MOLYBDENUM oxides, *MOLYBDATES
Abstract

Efficiently treating wastewater, particularly the elimination of heavy metal ions from water systems, continues to be one of the most pressing and complex challenges in modern environmental management. In this work, reduced graphene oxide coupled silver molybdate binary nanocomposites (RGO-Ag2MoO4 NCs) have been prepared via hydrothermal method. The crystalline nature and surface properties of the developed RGO-Ag2MoO4 NCs were proved by XRD, FTIR, SEM, and EDS techniques. Adsorption experiments demonstrated that the nanocomposites (NCs) effectively removed Pb(II) ions within 120 min, achieving a maximum removal efficiency ranging from 94.96% to 86.37% for Pb(II) concentrations between 20 and 100 mg/L at pH 6. Kinetic studies showed that the adsorption process followed a pseudo-second order model. Isotherm analysis presented that the Langmuir model provided the greatest fit for the equilibrium data, with a monolayer adsorption capacity of 128.94 mg/g. Thermodynamic analysis revealed that the adsorption process was spontaneous and endothermic. The results of this study highlight RGO-Ag2MoO4 NCs as a highly promising and eco-friendly material for the effective elimination of Pb(II) ions from wastewater. Their strong adsorption capacity, coupled with sustainable properties, makes them an efficient solution for addressing lead contamination, offering significant potential for practical applications in water treatment systems. [ABSTRACT FROM AUTHOR]

Published
2024
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28. Polyindole-Functionalized RGO-NiFe 2 O 4 -SiO 2 Nanocomposite: A Dual-Functional Nanomaterial for Efficient Antimony Adsorption and Subsequent Application in Supercapacitor.

Author

Shoeb, Mohd, Mashkoor, Fouzia, Khan, Mohmmad Naved, and Jeong, Changyoon

Subjects
*WASTEWATER treatment, *ENERGY storage, *HYDROTHERMAL synthesis, *GRAPHENE oxide, *ANTIMONY
Abstract

Effective wastewater treatment remains a critical challenge, especially when dealing with hazardous pollutants like antimony (Sb(III)). This study addresses this issue by using innovative nanocomposites to remove Sb(III) ions from water, while simultaneously repurposing the spent adsorbents for energy storage applications. We developed reduced graphene oxide-NiFe2O3-SiO2-polyindole nanocomposites (RGO-NiFe2O3-SiO2-PIn NCs) via a hydrothermal synthesis method, achieving a high removal efficiency of 91.84% for Sb(III) ions at an initial concentration of 50 mg/L at pH 8. After adsorption, the exhausted adsorbent was repurposed for energy storage, effectively minimizing secondary pollution. The Sb(III)-loaded adsorbent (RGO-NiFe2O3-SiO2-PIn@SbOx) exhibited excellent performance as an energy storage material, with a specific capacitance (Cs) of 701.36 F/g at a current density of 2 A/g and a retention rate of 80.15% after 10,000 cycles. This dual-purpose approach not only advances wastewater treatment technologies but also contributes to sustainable and economical recycling practices, particularly in the field of energy storage. [ABSTRACT FROM AUTHOR]

Published
2024
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46. Fast and Effective Confiscation of Methylene Blue Dye from Aqueous Medium by Luffa aegyptiaca Peel

Author

Nasar Abu, A. Khan Mohd, and Mashkoor Fouzia

Subjects
chemistry.chemical_compound, chemistry, Aqueous medium, biology, biology.organism_classification, Luffa aegyptiaca, Methylene blue, Analytical Chemistry, Nuclear chemistry
Abstract

Background: Dye contamination of natural water system is a severe problem due to the considerable enhancement in the industrial activities. As the dyes are highly visible, nonbiodegradable, and toxic in nature, they are considered as a severe source of water pollution. Therefore, it is imperative to develop an inexpensive, simple, effective, and easy technique for their elimination from wastewater. Methods: Luffa aegyptiaca peel (LuAP), kitchen waste was exploited as a low-priced biosorbent for the adsorptive elimination of cationic methylene blue (MB) dye. The influence of several batch parameters, i.e., adsorbent dose, pH of the solution, initial dye concentration, adsorbate/adsorbent contact time, and temperature were optimized for maximum adsorption of MB from aqueous media. Furthermore, thermodynamics, kinetics, and isotherm studies were also carried out in order to comprehend the dominant mechanism for the adsorptive elimination of MB. Results: The kinetic data for the adsorption of MB onto the LuAP followed closely by the pseudosecond- order (PSO) kinetics, and the adsorption equilibrium data were observed to be well demonstrated by Langmuir isotherm. The equilibrium was attained in 180 min with maximum sorption capacity of 52.63 mg/g at an adsorbent dose of 3 g/L, pH of 7, and temperature of 303 K. Thermodynamic study reveals that the removal of MB by LuAP is spontaneous and endothermic. Conclusion: It has been concluded that LuAP can be efficiently utilized for the confiscation of cationic MB dye from polluted water.

Published
2021

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