Multifunctional graphene magnetic nanosheet decorated with chitosan for highly sensitive detection of pathogenic bacteria

Near infrared (NIR) laser mediated surface activation of graphene oxide nanoflakes for efficient antibacterial, antifungal and wound healing treatment

“…The GO suspension displays an absorption peak at ∼230 nm due to the → * transition of the aromatic bands [20] and a shoulder at ∼300 nm is observable which can be attributed to n → * transitions of the carbonyl groups. It is important to note that G or GO has zero energy gap, thus it absorbs at a wide laser wavelength [21], which can be used for photothermal treatment. The functional groups of GO surface were measured by FT-IR (Fig.…”

Sensitive Detection of Aromatic Hydrophobic Compounds in Water and Perfluorooctane Sulfonate in Human Serum by Surface-Assisted Laser Desorption/Ionization Mass Spectrometry (SALDI-MS) with Amine Functionalized Graphene-Coated Cobalt Nanoparticles

“…[13][14][15][16][17][18] Recently, we have demonstrated that amine functionalized graphene-coated cobalt nanoparticles (CoC-NH 2 nanoparticles) with an extremly thin (∼2 nm) layer of graphitic carbon (this points to the thin layer of graphitized carbon being interpreted as graphene), can be characterized by surface-assisted desorption/ionization mass spectrometry (SALDI-MS), and can be used as e ective extraction sorbents of poly uorinated compounds (PFCs) in water due to their high surface area and high-strength saturation magnetization. 19) Chlorophenol and polycyclic aromatic hydrocarbons (PAHs) are widespread environmental pollutants, and analytical methods are needed for their detection.…”

Nanomaterial-based miniaturized extraction and preconcentration techniques coupled to matrix-assisted laser desorption/ionization mass spectrometry for assaying biomolecules

“…Our group described the use of various NMs, such as chitosan-decorated G magnetic nanosheet [116], Ag in ionic solution [117], TiO 2 [118], titanium-based biochip [119], and ZnO [120], as affinity probes in MALDI-MS for enrichment of bacterial proteins from various bacteria in real samples (e.g., E. coli, Serratia marcescens Bifidobacterium lactis, Lactobacillus acidophilus, Streptococcus thermophilus, Lactobacillus bulgaricus, L. acidophilus, Bifidobacterium longum, L. bulgaricus and S. thermophilus). The NP-based MALDI-MS methods effectively detected many unknown bacterial proteins from biological samples (human skin, plants, ants and milk products).…”