Synthesis and optimization of ceria variants via sol-gel combustion method for environmental remediation

Materials Open Research Pub Date : 2024-01-09 DOI:10.12688/materialsopenres.17634.1

Triparna Chakraborty, Dharmveer Yadav, Amita Bedar, Manoj Kumar Pandey, S. Saxena, S. Shukla

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Abstract

The study delves into the comprehensive exploration of ceria nanoparticle synthesis, explicitly focusing on distinct variants: fuel-rich, fuel-deficient, and stoichiometric proportions. These ceria variants are meticulously investigated using the sol-gel combustion method to uncover their unique characteristics. The exceptional performance of stoichiometric ceria is particularly notable, as it exhibits a well-defined crystal structure and balanced elemental composition. Conversely, fuel-deficient and fuel-rich ceria variants display altered lattice structures due to variations in their oxygen-to-cerium ratios. The study extends to the incorporation of these variants of ceria nanoparticles into PVDF polymeric membranes by flat sheet membrane synthesis for water application. The different ceria variant’s surface charges and electronic vacancies play a significant role in water purification and emulsion separation. Capitalizing on their individual properties, ceria-modified membranes are systematically evaluated, for membrane performance in terms of flux, recovery ratio and reusability. Stoichiometric ceria-incorporated membranes emerge as superior performers with 1.7x oil-water separation efficiency and reusability compared to pristine membranes. Therefore, ceria nanoparticle incorporated membrane can be used for sustainable environmental remediation of pollutants from the water.

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通过溶胶-凝胶燃烧法合成和优化用于环境修复的铈变体

该研究深入全面地探讨了铈纳米粒子的合成，明确侧重于不同的变体：富燃料、缺燃料和化学计量比例。采用溶胶-凝胶燃烧法对这些铈变体进行了细致的研究，以揭示它们的独特特性。化学计量铈的优异性能尤其引人注目，因为它具有明确的晶体结构和均衡的元素组成。相反，缺乏燃料和富含燃料的铈变体则因其氧铈比的变化而显示出不同的晶格结构。这项研究通过平板膜合成法，将这些变体的纳米铈颗粒加入到聚偏二氟乙烯（PVDF）聚合物膜中，用于水处理。不同铈变体的表面电荷和电子空位在水净化和乳液分离中发挥着重要作用。利用铈改性膜各自的特性，对其在通量、回收率和可重复使用性方面的性能进行了系统评估。与原始膜相比，化学合成铈掺杂膜的油水分离效率和可重复使用性是原始膜的 1.7 倍，表现出卓越的性能。因此，铈纳米粒子膜可用于水污染物的可持续环境修复。

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Materials Open Research materials science-

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