Dual use of colorimetric sensor and selective copper removal from aqueous media with novel p(HEMA-co-TACYC) hydrogels: Cyclen derivative as both monomer and crosslinker

Hava Ozay; Zeynep Gungor; Betul Yilmaz; Pinar Ilgin; Ozgur Ozay

doi:10.1016/j.jhazmat.2019.121848

Dual use of colorimetric sensor and selective copper removal from aqueous media with novel p(HEMA-co-TACYC) hydrogels: Cyclen derivative as both monomer and crosslinker

J Hazard Mater. 2020 May 5:389:121848. doi: 10.1016/j.jhazmat.2019.121848. Epub 2019 Dec 10.

Authors

Hava Ozay¹, Zeynep Gungor², Betul Yilmaz³, Pinar Ilgin⁴, Ozgur Ozay⁵

Affiliations

¹ Laboratory of Inorganic Materials, Department of Chemistry, Faculty of Science and Arts, Canakkale Onsekiz Mart University, Canakkale, Turkey. Electronic address: havaozay@comu.edu.tr.
² Graduate School of Natural and Applied Sciences, Department of Chemistry, Canakkale Onsekiz Mart University, Canakkale, Turkey.
³ Graduate School of Natural and Applied Sciences, Department of Bioengineering and Materials Engineering, Canakkale Onsekiz Mart University, Canakkale, Turkey.
⁴ Department of Chemistry and Chemical Processing Technologies, Lapseki Vocational School, Canakkale Onsekiz Mart University, Canakkale/Lapseki, Turkey.
⁵ Laboratory of Inorganic Materials, Department of Chemistry, Faculty of Science and Arts, Canakkale Onsekiz Mart University, Canakkale, Turkey; Department of Bioengineering, Faculty of Engineering, Canakkale Onsekiz Mart University, Canakkale, Turkey.

PMID: 31874756
DOI: 10.1016/j.jhazmat.2019.121848

Abstract

Within the scope of this study, p(2-hydroxyethyl methacrylate-co-tetraacrylic cyclen) (p(HEMA-co-TACYC)) hydrogels were synthesized for the first time in the literature using a tetraacrylic cyclen (TACYC) as both functional monomer and crosslinker. The hydrogels designed especially for Cu²⁺ ions showed colorimetric sensor behavior selective for Cu²⁺ ions in all aqueous media (deionized, tap, river and sea water) and in metal ion mixtures. The p(HEMA-co-TACYC) hydrogels forming a stable complex with Cu²⁺ ions simultaneously showed properties of being a good adsorbent material. The hydrogels have reuse capacity as both sensor and adsorbent material. Changing the amount of TACYC in the hydrogel structure changes the maximum adsorption capacity for Cu²⁺ ions. The Langmuir and Freundlich adsorption constants for Cu²⁺ ion adsorption of the hydrogels, acting as selective adsorbent in all aqueous media and metal ion mixtures, were determined.

Keywords: Hydrogel; copper removal; cyclen; selective adsorption; sensor.