Publications by authors named "Erum Pervaiz"

Conventional energy resources are diminishing, and environmental pollution is constantly increasing because of the excessive use of fossil fuels to sustain the ever-increasing population and industrialization. This has raised concerns regarding a sustainable future. In the pursuit of addressing sustainability in industrial processes and energy systems, the production of green hydrogen is considered a promising and crucial solution to meet the growing energy demands.

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Environmental degradation and energy constraint are important risks to long-term sustainability in the modern world. Water splitting is a vital approach for environmentally friendly and sustainable energy storage, providing a clean way to produce hydrogen without pollutants. Preparing a catalyst that is active, bifunctional, and durable for water splitting is a difficult task.

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Drilling fluids are an essential component of drilling operations in the oil and gas industry. Nanotechnology is being used to develop advanced drilling fluid additives. This study looked at the viability of synthesizing SiO/g-CN hybrid extending the Stober process followed by its addition in different concentrations to water-based drilling fluids and studying impact on the rheological and fluid loss properties of the fluids.

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A number of coating techniques have been used to improve the processability of high explosives. These techniques are typically used for developing compositions, such as boosters and fillers. The most typically used technique is the "solvent-slurry coating".

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Hydrogen (H) production through water splitting has less viable applications due to the unfavourable kinetics of the reaction. Electrocatalysts with a robust structure, high levels of catalytic activity, and a high degree of stability are in high demand but challenging. This paper reports the synthesis of highly porous interconnected molybdenum phosphide (MoP) assembled with graphene oxide (GO) to form MoP/RGO hybrid electrocatalysts in a novel phosphorization process at a reasonably low temperature under an argon (Ar) atmosphere by a mixing and heat-treating method for the hydrogen evolution reaction (HER).

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Designing of non-noble, cost-effective, sustainable catalysts for water splitting is essential for hydrogen production. In this research work, ZIF-67, g-CN, and their composite (1, 3, 5, 6, 8 wt% g-CN@ZIF-67) are synthesized, and various techniques, XRD, FTIR, SEM, EDX and BET are used to examine their morphological properties for electrochemical water-splitting. The linkage of ZIF-67 with g-CN synergistically improves the electrochemical kinetics.

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Article Synopsis
  • The study focuses on the effective removal of toxic chromium (Cr(vi)) and lead (Pb(ii)) contaminants from water using carboxylic terminated TiCT nanosheets synthesized with ammonium bifluoride and citric acid.
  • The TiCT nanosheets demonstrated high adsorption capacities of 1090 mg/g for Cr(vi) and 1135 mg/g for Pb(ii) within just a few minutes, primarily through electrostatic interactions and ion exchange mechanisms.
  • Additionally, they maintain over 80% removal efficiency after multiple regeneration cycles and outperform other conventional adsorbents, making them a promising solution for purifying water from hazardous contaminants.
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In recent years, there has been a resurgence of interest in developing green and renewable alternate energy sources as a solution to the energy and environmental problems produced by conventional fossil fuel use. As a very effective energy transporter, hydrogen (H) is a possible candidate for the future energy supply. Hydrogen production by water splitting is a promising new energy option.

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For efficient electrocatalytic water-splitting, developing a nonprecious-metal-based stable and highly active material is the most challenging task. In this paper, we have devised a synthesis strategy for a hybrid catalyst composed of molybdenum carbide (MoC) and a Zr-based metal-organic framework (MOF) (UiO-66) via the solvothermal process. Synergistic effects between MoC and UiO-66 lead to a decrease in the hydrogen adsorption energy on the catalysts, and MoC/UiO-66 hybrids offer excellent catalytic activity in an alkaline environment for water-splitting.

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Article Synopsis
  • A novel bimetallic nickel oxide/copper oxide metal-organic framework (NiO/CuO MOF) was developed using two linkers, Benzene Dicarboxylic acid (BDC) and Pyrazine, and synthesized with reduced graphene oxide (rGO) via a hydrothermal method.
  • The structural and morphological properties of the composites were analyzed using techniques such as XRD, SEM, EDX, FTIR, and Raman IR.
  • The electrochemical performance showed that increasing rGO concentration improved the electrocatalytic activity for methanol oxidation, achieving a maximum current density of 437.28 mA/cm at 0.9 V, indicating its potential for application in direct methanol fuel
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Advance applications like water splitting system and rechargeable metal-air battery are highly dependent on efficient electrocatalyst for the oxygen evolution reaction (OER). Heterostructured materials, with a high active surface area and electron effect, accomplish enhanced catalytic performance. Here, a nitride-sulfide composite (FeNiN-NiS) has been prepared by a simple hydrothermal process coupled with nitridation.

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The efficient capture of CO is a critical problem for porous adsorbents. The inadequacy of conventional adsorbents has low adsorption capacity towards CO removal. Metal organic frame work has been considered as very effective for CO adsorption as it shows higher rate of CO adsorption at room temperature.

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Electrocatalysis is an efficient and promising means of energy conversion, with minimal environmental footprint. To enhance reaction rates, catalysts are required to minimize overpotential. Alternatives to noble metal electrocatalysts are essential to address these needs on a large scale.

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The fabrication of functional materials in patterned morphology is focused to obtain remarkable physiognomies of the materials for certain applications. Instead of randomly distributed agglomerated nanoparticles, it is highly desirable to arrange them in a motif, as this directed formation of nanomaterials can have a substantial influence on their performance and activity in various applications. With this perspective, MOF derived hollow cubes of nickel cobalt ferrites have been synthesized via a facile process using sacrificial templates at 600 °C.

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Highly integrated nanocomposite of Graphene oxide (GO) and its derivatives with metal oxides is essential for enhanced performance for various applications. Tuning the morphology is an important aspect during nanomaterials synthesis; this has an amplifying influence upon physicochemical properties of advanced functional materials. In this research work, GO/TiO nanotube composites have been successfully synthesized via alkaline hydrothermal treatment method by augmenting GO layers with two different phases of TiO (anatase and rutile) nanoparticles, followed by the hydrothermal treatment that also have caused reduction of GO to reduced GO (RGO).

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The fabrication of nanograins with a uniform morphology wrapped with reduced graphene oxide (RGO) in a designed manner is critical for obtaining a large surface, high porosity and efficient catalytic ability at mild conditions. Hybrid structures of metal oxides decorated on two-dimensional (2D) RGO lacked an interface and channels between the individual grains and RGO. The present work focuses on the synthesis of RGO-wrapped CoO nanograin architecture in micron-sized polyhedrons and the ability to reduce aromatic nitro compounds.

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This study focused on the synthesis of α-MoO/rGO (rGO, reduced graphene oxide). One-dimensional nanohybrids under mild conditions and a low temperature wet chemical route produced highly pure single-crystalline orthorhombic α-MoO on GO sheets. Four nanohybrids, labeled as GMO-0, GMO-1, GMO-2 and GMO-3, were synthesized with different mass chargings of GO (0 mg, 40 mg, 60 mg and 100 mg, respectively).

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