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Material selection of sustainable composites by the valorisation of plastics and agro wastes: An integrated q-rung orthopair fuzzy-based multiple criteria decision making model
(Elsevier BV, 2026-06)
Ashish Soni
;
Sonu Kumar Gupta
;
Dai-Viet N. Vo
;
Natarajan Rajamohan
;
Mohammad Yusuf
The concern for plastic wastes and high usages for building construction materials has promoted the nation towards eco-friendly composite materials for structural components. Anappropriate choice of material improves the functionality and life cycle of a product . The research seeks to promote sustainable practices in building construction for the attainment of the circular economy. This investigation anticipated a fuzzy number-based integrated Stepwise Weight Assessment Ratio Analysis (SWARA)-Complex Proportional Assessment (COPRAS) mathematical model for material selection of eco-friendly composites. In the present work, eight (08) different composites are developed by recycling of waste plastics namely low-density polyethylene, high-density polyethylene, polypropylene, and polyethylene terephthalate with the reinforcement of natural fibres of coconut and jute. The alternatives are ranked by considering seven (07) criteria for structural application such as floor tiles, pavements, panels, etc. The compressive is identified as the most significant while hardness is least preferable criteria for composite having structural applications. The proposed model has identified the alternatives A6 and A1 as the most and least preferable alternatives, respectively. The research has recommended the incorporation of 20 wt.% of jute fibre with 80 wt.% of polypropylene in composites for structural applications. The comparative analysis of rankings against the other well-known techniques has verified the trustworthiness of the model. The high ranges of 0.76–-0.928 for Spearman’s rank correlations coefficient has verified the robustness of the ranking results. The sensitivity analyses have shown the influence of criteria weight on rankings. The suggested mathematical approach can efficiently rank the composites and address the challenges associated in the material selection of polymeric composites in unpredictable environments.
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Advancements in sorption-based materials for hydrogen storage and utilization: A comprehensive review
(Elsevier BV, 2024-11)
Fazil Qureshi
;
Mohammad Yusuf
;
Salman Ahmed
;
Moinul Haq
;
Alhafez M. Alraih
With its remarkable energy density and eco-friendly combustion properties, hydrogen stands as a beacon of hope in our quest to meet future energy needs while ushering in a cleaner, carbon-free era, making a significant impact on the path to a sustainable world. Nevertheless, the broader utilization of H2 faces hurdles concerning its generation, storage, and efficient utilization. Solid materials offer a promising avenue to address these challenges, as their properties can be readily tailored to enhance the efficiency of H2 generation, storage, and utilization. By manipulating their physical, chemical, thermal, and electronic attributes, solid materials can make substantial contributions across all three crucial aspects. Materials based on metal and complex hydrides show promise as hydrogen storage materials. The activation energy for hydrogen desorption is significantly reduced by transition metals doping, improving the materials' capacity to store hydrogen. Bimetallic nanoparticles of transition metals had outstanding catalytic and synergistic effects on the hydrogen adsorption/desorption properties of MgH2 when compared to the case of a single transition metals. Zeolites are superior to metal-organic frameworks due to their simplicity in synthesis, low thermal stabilities, and inexpensive cost. In general, hydrogen hydrates show promise as materials for hydrogen storage, but additional study is required to increase their hydrogen storage volumes, charging speeds, and cycle capabilities. Glass structure factors, such as the connectedness of the regional network, have a role in establishing the hydrogen permeabilities of glasses. The main limitations of these systems are their low volumetric hydrogen storage densities (<20 kg/m3) and the requirement for heating to liberate hydrogen. It's remarkable that organo-transition metal complexes materials showed strong 8.9 and 9.9 wt% hydrogen adsorption capabilities. Such endeavours are imperative to usher in a sustainable H2 powered future. This comprehensive review explores various materials for physisorption and chemisorption-based hydrogen storage, providing in-depth insights and pertinent comparisons to highlight their potential for effective hydrogen storage solutions

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