Towards the Development of Sustainable Hybrid Materials to Achieve High Cr(VI) Removals in a One-Pot Process.

Nanomaterials (Basel)

Departamento de Química and CICA-Centro Interdisciplinar de Química e Bioloxía, Universidade da Coruña, As Carballeiras, s/n, 15071 A Coruña, Spain.

Published: November 2022

AI Article Synopsis

  • Rising manufacturing costs require more efficient production and waste management, leading to a focus on cost-effective materials that minimize environmental pollutants.
  • A sodium silicate polymeric material functionalized with iron was developed, featuring iron-rich nanostructures for effective decontamination of Cr(VI).
  • The hybrid material demonstrated superior performance in a one-pot process, showing promising results for pollution control, and was characterized using various analytical techniques, supporting its potential as an economical and eco-friendly solution.

Article Abstract

Rising manufacturing costs resulting from the current global situation make it necessary to economize at all stages of production, including waste management. Cost-effective materials that reduce the release of pollutants into the environment are becoming mandatory. In this work, a sodium silicate polymeric material, functionalized with iron, was synthesized. The material contains iron-rich nanostructures on the surface, which are responsible for the decontamination process. The inorganic material was further treated with a reducing eucalyptus extract to improve its decontamination performance. Both the inorganic and hybrid materials were used for decontamination of Cr(VI), a widely emitted chemical waste product. The hybrid material provided the best results (1.7 g Cr(VI)·g Fe) in a one-pot process combining reduction and adsorption. The Langmuir-Freundlich model and a statistical thermodynamics adsorption model, together with removal rates, were used to study the processes. High adsorption energies were found, especially in the adsorption of Fe(II) on the polymeric base (33.2 kJ∙mol). All materials were characterized using SEM, EDS and N sorption, TGA, and IR analyses. In conclusion, the hybrid material synthesized in this study is cheap and easy to produce through environmentally friendly synthesis, and it is a promising adsorbent for the prevention of pollution issues in effluent discharges.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9693857PMC
http://dx.doi.org/10.3390/nano12223952DOI Listing

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