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Fast Gold Recovery from Aqueous Solutions and Assessment of Antimicrobial Activities of Novel Gold Composite
dc.creator | Tadić, Tamara | |
dc.creator | Marković, Bojana | |
dc.creator | Vuković, Zorica | |
dc.creator | Stefanov, Plamen | |
dc.creator | Maksin, Danijela | |
dc.creator | Nastasović, Aleksandra | |
dc.creator | Onjia, Antonije | |
dc.date.accessioned | 2023-12-18T10:13:05Z | |
dc.date.available | 2023-12-18T10:13:05Z | |
dc.date.issued | 2023 | |
dc.identifier.issn | 2075-4701 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6990 | |
dc.description.abstract | A novel porous gold polymer composite was prepared by the functionalization of a glycidyl methacrylate-based copolymer (pGME) with ethylene diamine (pGME-en), and activation by gold (pGME-en/Au), in a simple batch adsorption procedure in an acid solution, at room temperature. Detailed characterization of the pGME-en before and after activation was performed. The main focuses of this research were the design of a method that can enable the recovery of gold and the reuse of this multipurpose sorbent as an antimicrobial agent. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analysis pointed out amine groups as the primary binding sites for Au activation, while hydroxyl groups also contributed to the chelation reaction. pGME-en exhibited fast gold adsorption with an adsorption half-time of 5 min and an equilibrium time of 30 min. The maximal adsorption capacity was about 187 mg/g. The analysis of sorption experimental data with a non-linear surface reaction and diffusion-based kinetic models revealed the pseudo-second-order and Avrami model as the best fit, with unambiguous control by liquid film and intra-particle diffusion. The biological activity studies against Staphylococcus aureus, Listeria monocytogenes, Escherichia coli, and Candida albicans revealed moderate activity of pGME-en/Au against different bacterial and fungal species. pGME-en/Au was stable in a saline solution, with a release of approximately 2.3 mg/g after 24 h. | en |
dc.publisher | MDPI | |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200026/RS// | en |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200135/RS// | en |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200017/RS// | en |
dc.relation | European Regional Development Fund—Operational Programme Science and Education for Smart Growth (BG05M2OP001-1.001-0008) | en |
dc.rights | openAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Metals | en |
dc.subject | glycidyl methacrylate | en |
dc.subject | adsorption | en |
dc.subject | Au | en |
dc.subject | antimicrobial activity | en |
dc.subject | XPS | en |
dc.title | Fast Gold Recovery from Aqueous Solutions and Assessment of Antimicrobial Activities of Novel Gold Composite | en |
dc.type | article | en |
dc.rights.license | BY | |
dc.citation.issue | 11 | |
dc.citation.spage | 1864 | |
dc.citation.volume | 13 | |
dc.identifier.doi | 10.3390/met13111864 | |
dc.identifier.fulltext | http://TechnoRep.tmf.bg.ac.rs/bitstream/id/19137/Fast_Gold_Recovery_pub_2023.pdf | |
dc.identifier.scopus | 2-s2.0-85178350772 | |
dc.type.version | publishedVersion |