Anais do Workshop INEO 2023

MERCURY RECOVERY FRAMEWORKS BASED ON TEGYLATED PHENOTHIAZINE-CHITOSAN XEROGELS

Published in 12/12/2023 - ISBN: 978-65-272-0088-8

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Paper Title
MERCURY RECOVERY FRAMEWORKS BASED ON TEGYLATED PHENOTHIAZINE-CHITOSAN XEROGELS
Authors
  • Sandu Cibotaru
  • Daniela Ailincai
  • Bianca Iustina Andreica
  • Luminita Marin
Modality
Pôster
Subject area
Síntese e caracterização de materiais
Publishing Date
12/12/2023
Country of Publishing
Brasil
Language of Publishing
Inglês
Paper Page
https://www.even3.com.br/anais/workshop-do-ineo-2023/614381-mercury-recovery-frameworks-based-on-tegylated-phenothiazine-chitosan-xerogels
ISBN
978-65-272-0088-8
Keywords
phenothiazine; chitosan; imine; mercury recovery
Summary
The release of heavy metals into environment is a major global concern, severely impacting human and animal health [1]. The impact of heavy metals on the environment is significant and can include effects on ecosystems, such as the degradation of soil quality and the reduction of biodiversity. Additionally, heavy metals can affect water quality and can harm aquatic life, including fish and other organisms that are important sources of food for humans. Even if some metals, such as copper, zinc, manganese, selenium, chromium, and molybdenum, are important in the daily diet in small amounts, their overexposure causes poisoning and long-term organ damage, especially for children [2]. Other metals, such as arsenic, cadmium, lead, and mercury, were identified as extremely dangerous for the human body even in small amounts and were included on the list of carcinogenic agents by health agencies [3,4]. Among these toxic metals, mercury is especially dangerous because it easily sublimates, contaminates the air, and deposits in the waters and soil, being a constant pollution source [5]. In living organisms, mercury denatures proteins, killing cells, including the neurons [6]. The recovery of mercury from the environment is a complex and challenging process. That’s why, our attention was focused on the development of new solid materials, based on TEGylated phenothiazine and chitosan, with a high capacity to recover mercury ions from aqueous solutions. They were prepared by hydrogelation of chitosan with a formyl derivative of TEGylated phenothiazine, followed by lyophilization. Their structural and supramolecular characterization was carried out by 1H-NMR and FTIR spectroscopy, as well as X-ray diffraction and polarized light microscopy. Their morphology was investigated by scanning electron microscopy and their photophysical behavior was examined by UV/Vis spectroscopy. Swelling evaluation in different aqueous media indicated the key role played by the supramolecular organization for their hydrolytic stability. Mercury recovery experiments and the analysis of the resulting materials by X-ray diffraction and FTIR spectroscopy showed a high ability of the studied materials to bind mercury ions by coordination with the sulfur atom of phenothiazine, imine linkage, and amine units of chitosan. Acknowledgments: Acknowledgments: This work was supported by a grant from the Romanian Ministry of Education and Research, CNCS—UEFISCDI, project number PCE2/2021 within PNCDI III and from the European Union’s Horizon 2020 research and innovation program under grant agreement 873123. References [1] Wu, D.; Sedgwick, A.C.; Gunnlaugsson, T.; Akkaya, E.U.; Yoon, J.; James, T.D. Fluorescent Chemosensors: The Past, Present and Future. Chem. Soc. Rev. 2017, 46, 7105–7123. [2] Balali-Mood, M.; Naseri, K.; Tahergorabi, Z.; Khazdair, M.R.; Sadeghi, M. Toxic Mechanisms of Five Heavy Metals: Mercury, Lead, Chromium, Cadmium, and Arsenic. Front. Pharmacol. 2021, 12, 643972. [3] Tchounwou, P.B.; Yedjou, C.G.; Patlolla, A.K.; Sutton, D.J. Heavy Metal Toxicity and the Environment. Exp. Suppl. 2012, 101, 133–164. [4] Bansod, B.; Kumar, T.; Thakur, R.; Rana, S.; Singh, I. A Review on Various Electrochemical Techniques for Heavy Metal Ions Detection with Different Sensing Platforms. Biosens. Bioelectron. 2017, 94, 443–455. [5] Bodnar, D.; Burlibasa, L.; Varlan, C.; Marcov, N.; Georgescu, S.; Marcov, C. Mercury, Biocompatibility and Its Impact on Environment. Metal Int. 2009, 14, 95–100. [6] Dórea, J.G. Integrating Experimental (In Vitro and In Vivo) Neurotoxicity Studies of Low-Dose Thimerosal Relevant to Vaccines. Neurochem. Res. 2011, 36, 927–938.
Title of the Event
Workshop do INEO 2023
City of the Event
Nazaré Paulista
Title of the Proceedings of the event
Anais do Workshop INEO 2023
Name of the Publisher
Even3
Means of Dissemination
Meio Digital

How to cite

CIBOTARU, Sandu et al.. MERCURY RECOVERY FRAMEWORKS BASED ON TEGYLATED PHENOTHIAZINE-CHITOSAN XEROGELS.. In: Anais do workshop INEO 2023. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2023. Available in: https//www.even3.com.br/anais/workshop-do-ineo-2023/614381-MERCURY-RECOVERY-FRAMEWORKS-BASED-ON-TEGYLATED-PHENOTHIAZINE-CHITOSAN-XEROGELS. Access in: 17/05/2025

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