Facile preparation of magnetic P(MMA-co-GMA)@Fe3O4@PMAA microspheres using porous microsphere as templates for removal of methylene blue

Zhang, Jinquan; Man, Hong; Han, Xuelian; Wang, Zhifei; Jiang, Yong

doi:10.1007/s00396-023-05099-w

Cited by 5 publications

(1 citation statement)

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“…Among them, the chelating polymer ligands based on glycidyl methacrylate (GMA) are very attractive, due to the presence of oxirane rings that can easily be transformed into various functional groups [18]. These materials have found applications in very diverse areas such as drug delivery [19], support for enzymes [20], and wastewater treatment [21], as well as catalysis [22]. As a result of extensive research, Jovanović et al developed GMA-based polymeric sorbents with adjustable porosity parameters by varying the type and the amount of aliphatic alcohol and crosslinking monomer in the reaction mixture [23].…”

Section: Introductionmentioning

confidence: 99%

Fast Gold Recovery from Aqueous Solutions and Assessment of Antimicrobial Activities of Novel Gold Composite

Tadić,

Marković,

Vuković

et al. 2023

Metals

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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.

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