An efficient 3D adsorbent foam based on graphene oxide/AgO nanoparticles for rapid vortex-assisted floating solid phase extraction of bisphenol A in canned food products

Abstract

3-D adsorbent foam based on graphene oxide/AgO nanoparticles for vortex-assisted floating solid phase extraction of bisphenol A.

Sulfur-Doped Binary Layered Metal Oxides Incorporated on Pomegranate Peel-Derived Activated Carbon for Removal of Heavy Metal Ions

“…Subsequently, 1 g S 2 , 0.1 g SnCl 2 , and 0.1 g MnCl 2 were added to a solution containing 2 g of the dried AC in 150 mL of distilled water, and the combination was agitated at 45 • C for 3 h (pH 9). Afterward, the solid was separated from the mixture and heated in the furnace for 2 h at 650 • C. The product (SML-AC) was then rinsed with extra distilled water and dried in an oven at 85 • C for 18 h [23][24][25] (Figure 12).…”

Solid Phase Extraction Penicillin and Tetracycline in Human Serum Using Magnetic Graphene Oxide-Based Sulfide Nanocomposite

“…Thus, the US Center for Disease Control and Prevention reported that approximately 23,000 Americans die annually of antibioticresistant infections [5]. One of the other extensively used antibiotics is penicillin, which was discovered by Alexander Fleming in 1928 and was a breakout event in medicine [6]. This drug inhibits the cross-linkage of an amino sugar in gram-negative and positive bacterial cell walls when it is bound to the transpeptidase domain of penicillin binding proteins (PBPs), leading to the cell's death [7].…”

“…Because of this, solid phase extraction (SPE) emerged as a viable replacement for LLE because it is one of the most widespread sample treatments employed as a cleanup and preconcentration step [10]. SPE is the most common technique in sample preparation [11,12], due to its wide variation of sorbents, flexibility, high enrichment factor, noticeable extraction recovery, good sensitivity, selectivity, and reusability [6]. Although conventional SPE has gained potential benefits, it is tedious and time-consuming, especially when loading a high sample volume and requiring a low breakthrough volume [13].…”

“…Among them, graphene oxide is a new allotrope of carbon that is widely used as an MSPE sorbent [19]. Graphene oxide as a low-cost adsorbent provides fascinating properties, including a high specific surface area (2630 m 2 g −1 ) [6], admirable thermal conductivity, considerable mechanical strength, and a free-standing two-dimensional mono-layer sheet of carbon atoms with a honeycomb structure [19]. The powerful techniques, namely X-ray photoelectron spectroscopy (XPS), 13C-NMR, and Raman spectroscopy, demonstrated the presence of various functional groups, such as lactol, epoxy (as bridges), hydroxyl group, and carboxyl group, on graphene oxide individual planes and the edges [16].…”

“…The powerful techniques, namely X-ray photoelectron spectroscopy (XPS), 13C-NMR, and Raman spectroscopy, demonstrated the presence of various functional groups, such as lactol, epoxy (as bridges), hydroxyl group, and carboxyl group, on graphene oxide individual planes and the edges [16]. Furthermore, functional groups establish covalent and non-covalent interactions, such as hydrogen binding [6], hydrophilic interaction, π-π stacking, and electrostatic interaction [6], with various analytes. In addition, GO is chemically stable enough, even with hydroxyl radicals, making GO composites with macroscopic structure a suitable candidate for long-lived recyclable adsorbents for the enrichment of carbon-based ring structures [18].…”