A5010710523- Gold and Silver Nanoparticles Synthesis and Applications
- Electrochemical Analysis and Applications
- Analytical chemistry methods development
- Nanoparticles: synthesis and applications
- Electrochemical sensors and biosensors
- Biosensors and Analytical Detection
- Advanced biosensing and bioanalysis techniques
- Spectroscopy Techniques in Biomedical and Chemical Research
- Carbon Nanotubes in Composites
- Advanced Nanomaterials in Catalysis
- Advanced Chemical Sensor Technologies
- Nanopore and Nanochannel Transport Studies
- Analytical Chemistry and Chromatography
- Mass Spectrometry Techniques and Applications
- Extraction and Separation Processes
- Microfluidic and Capillary Electrophoresis Applications
- Graphene and Nanomaterials Applications
- Carbon and Quantum Dots Applications
- Protein Interaction Studies and Fluorescence Analysis
- Chemistry and Chemical Engineering
- Nanocluster Synthesis and Applications
- Advanced Fiber Laser Technologies
- TiO2 Photocatalysis and Solar Cells
- Pesticide Residue Analysis and Safety
- Advanced Photocatalysis Techniques
University of Córdoba
2015-2024
Centro Científico Tecnológico - Córdoba
2018-2020
Instituto
2020
Universität Ulm
2013-2019
Marie Curie
2018
The ten principles of GSP are presented with the aim establishing a road map toward development overall greener analytical methodologies. Paramount aspects for greening sample preparation and their interconnections identified discussed. These include use safe solvents/reagents materials that renewable, recycled reusable, minimizing waste generation energy demand, enabling high throughput, miniaturization, procedure simplification/automation, operator's safety. Further, importance applying...
Advances in nanotechnology have enabled the development of nanoporous membranes based on carbon nanotubes, which, by virtue their exceptional properties, constitute excellent supports for analytical processes, including selective separation some molecules.
The paper proposes a simple and sensitive approach for the preconcentration determination of graphene oxide (GO) in environmental samples by using fluorescent quantum dots (GQDs). method is based on GO cellulose membrane their subsequent elution prior to fluorescence analysis quenching effect produced GQD solution due hydrophobic interactions between GQDs. limit detection was 35 μg·L(-1). precision, 200 μg·L(-1) concentration GO, 5.16%. optimized procedure has been successively applied...
Surface-enhanced vibrational spectroscopies, including surface-enhanced infrared absorption (SEIRA) and Raman scattering (SERS), selectively probe molecular vibrations with pronounced signal enhancements, yielding improved sensitivity. In contrast to conventional noble metal enhancement, this review highlights the latest progress applications utilizing graphene as signal-enhancing substrate, summarizes recent advances in graphene-based SEIRA SERS. Following an introduction fundamentals of...
In recent years, using natural materials to prepare sorbents has been a clear trend in the sample preparation context. This research line is supported by sustainable considerations, as it responds tenth principle of Green Analytical Chemistry. Also, affordability and availability open door developing global analytical solutions. Among all available materials, cellulose paper presents unique characteristics (porosity, mechanical resistance, easy chemical/physical modification substrate) that...
This article describes the synthesis of sorptive phases for bioanalysis based on modification cellulose paper with natural beeswax as sorbent, resulting in a substrate completely renewable and sustainable. The preparation consisted dissolution hexane, followed by its drop-casting subsequent evaporation solvent. renders it hydrophobic, enabling extraction target analytes, i.e., imipramine, desipramine, amitriptyline trimipramine, via hydrophobic interactions. main variables affecting...
Raman spectroscopy has been employed in analytical sciences for purity determination of carbon nanotube samples based on the consideration G-/D-band intensity ratios. This work demonstrates role aggregation these feature bands, which, case single walled nanotubes (SWNTs), proved to be crucial ratio measurements. We have found variation relative intensities G- and D-bands across a sample SWNTs without any other treatment, discarding possible influence laser beam or focusing. In multiwalled...
We report the development of plasmonic chip-based systems comprising self-assembled gold nanostars at silicon substrates that enable concomitantly enhanced Raman (surface spectroscopy; SERS) and mid-infrared infrared reflection or absorption SEIRA) spectral signatures.
While current trends in Green Analytical Chemistry aim at reducing or simplifying sample treatment, food usually comprises complex matrices where direct analysis is not possible most cases. In this context, treatment plays a pivotal role. Biogenic amines are naturally formed many foodstuffs due to the action of microorganisms, while their presence has been associated with adverse health effects. work, extraction seven biogenic (cadaverine, histamine, phenylethylamine, putrescine, spermidine,...
Titanium oxide nanoparticles (TiO2 NPs) are a semiconductor material widely employed as photocatalysts for environmental remediation owing to its excellent properties. Nevertheless, collecting the nanomaterial once dispersed in aqueous media is challenging, while photocatalytic activity limited mainly ultraviolet range of radiation. In this work, we have modified cellulose paper, sustainable and green support, with polymer nanocomposite comprising nylon-6 different nanomaterials, i.e.,...
A gold-nanostar-based SERS substrate has been developed and applied to the investigation of aggregation processes proteins induced <italic>via</italic> temperature solvent.
This paper describes a simple approach to determine gold nanoparticles in liver and river water samples. The method of purification from the matrix is based on stabilization with cationic surfactant followed by microliquid–liquid extraction ionic liquid. Finally, extracted can be analysed UV/Vis detection or Raman spectroscopy. precision proposed for analysis tissue samples was 9.7% 18% respectively analysis. sensitivity 1.17 × 10−12 M 3 mL homogenate sample.
Diamond has excellent optical properties including broadband transmissivity, low self‐absorption, and a high refractive index, which have prompted its use for sensing applications. Thin‐film diamond strip waveguides (DSWGs) combined with tunable quantum cascade lasers (tQCLs) providing an emission wavelength range of 5.78–6.35 μm (1735–1570 cm −1 ) been used to obtain mid‐infrared (MIR) spectra proteins, thereby enabling the analysis their secondary structure via amide I band. Three...