Effect of the molecular weight on the sensing mechanism in polyethylene glycol diacrylate/gold nanocomposite optical transducers

Miranda, Bruno; Dello Iacono, Stefania; Rea, Ilaria; Borbone, Fabio; De Stefano, Luca

doi:10.1016/j.heliyon.2024.e25593

Cited by 2 publications

(1 citation statement)

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“…Indeed, with the help of polymer, it is possible to handle and collect in an easy way the sorbent filter from the wastewater, once they have removed the toxic contaminants. Recently, adsorbent materials containing noble metal nanomaterials [60][61][62][63] Polymers 2024, 16, 1034 3 of 19 have been achieving success not only for their efficiency but also for other features such as anti-bactericity [64,65].…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Printed Filters Based on Poly(ethylene glycol) Diacrylate Hydrogels Doped with Silver Nanoparticles for Removing Hg(II) Ions from Water

Burratti,

Bertelà,

Sisani

et al. 2024

Polymers

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Nowadays, due to water pollution, more and more living beings are exposed to dangerous compounds, which can lead to them contracting diseases. The removal of contaminants (including heavy metals) from water is, therefore, a necessary aspect to guarantee the well-being of living beings. Among the most used techniques, the employment of adsorbent materials is certainly advantageous, as they are easy to synthesize and are cheap. In this work, poly(ethylene glycol) diacrylate (PEGDA) hydrogels doped with silver nanoparticles (AgNPs) for removing Hg(II) ions from water are presented. AgNPs were embedded in PEGDA-based matrices by using a photo-polymerizable solution. By exploiting a custom-made 3D printer, the filters were synthesized. The kinetics of interaction was studied, revealing that the adsorption equilibrium is achieved in 8 h. Subsequently, the adsorption isotherms of PEGDA doped with AgNPs towards Hg(II) ions were studied at different temperatures (4 °C, 25 °C, and 50 °C). In all cases, the best isotherm model was the Langmuir one (revealing that the chemisorption is the driving process and the most favorable one), with maximum adsorption capacities equal to 0.55, 0.57, and 0.61 mg/g, respectively. Finally, the removal efficiency was evaluated for the three temperatures, obtaining for 4 °C, 25 °C, and 50 °C the values 94%, 94%, and 86%, respectively.

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