XPS and NRA investigations during the fabrication of gold nanostructured functionalized screen-printed sensors for the detection of metallic pollutants

Jasmin, Jean-Philippe; Miserque, F.; Dumas, Eddy; Vickridge, Ian; Ganem, J.‐J.; Cannizzo, Caroline; Chaussé, A.

doi:10.1016/j.apsusc.2016.11.125

Cited by 23 publications

(19 citation statements)

References 40 publications

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“…Gold loading was quantified by ICP-OES, achieving values of 2.1 and 3.6 wt % for the ratios PVP/Au of 0.5 and 50, respectively (See Table 1). Furthermore, XPS spectra for Au-4f core level region of our samples in Figure S5, shows two doublets at 84.1 and 87.8 eV associated with Au 0 species and at 84.9 and 88.6 eV related with a higher oxidized state (Au +δ species) (Jasmin et al, 2017; Liberman et al, 2017). The Au 0 /Au +δ ratio is for both samples 90.5%.…”

Section: Resultsmentioning

confidence: 76%

Carbon Nanotubes Modified With Au for Electrochemical Detection of Prostate Specific Antigen: Effect of Au Nanoparticle Size Distribution

et al. 2019

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Different functionalized Multi-Wall Carbon Nanotube and gold nanoparticles (AuNPs) were synthesized as biosensor electrodes. These materials have been applied to the detection of the Prostate Specific Antigen (PSA). The synthesis of AuNPs was carried out using polyvinylpyrrolidone (PVP) as protecting agent. The PVP/Au molar ratio (0.5 and 50) controls the nanoparticle size distribution, obtaining a wide and narrow distribution with an average diameter of 9.5 and 6.6 nm, respectively. Nanoparticle size distribution shows an important effect in the electrochemical performance of the biosensor, increasing the electrochemical active surface area (EASA) and promoting the electron-transfer from the redox probe (Ferrocene/Ferrocenium) to the electrode. Furthermore, a narrow and small nanoparticle size distribution enhances the amount of antibodies immobilized on the transducer material and the performance during the detection of the PSA. Significant results were obtained for the quantification of PSA, with a limit of detection of 1 ng·ml −1 and sensitivities of 0.085 and 0.056 μA·mL·ng −1 for the two transducer materials in only 5 min of detection.

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Section: Resultsmentioning

confidence: 76%

Carbon Nanotubes Modified With Au for Electrochemical Detection of Prostate Specific Antigen: Effect of Au Nanoparticle Size Distribution

et al. 2019

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“…eV) is reported in Figure 8b the position of the peak corresponds to Au 0 [62]. The change in the corresponding Au 4f 7/2 from Au 3+ peak (85.5 ± 0.3 eV) [63][64][65] to binding energies 84.10 eV was linked to the reduction of Au 3+ into AuNPs. Since no other form of Au is visible, the reduction of Au 3+ can be postulated as complete.…”

Section: In-depth Characterization Of the Aunps@sba-15 Nanocompositementioning

confidence: 83%

Photo-induced generation of size controlled Au nanoparticles on pure siliceous ordered mesoporous silica for catalytic applications

Hajjar‐Garreau

Bonne

et al. 2020

Microporous and Mesoporous Materials

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A versatile in situ photochemical reduction approach was used to generate a composite of gold nanoparticles and SBA-15 silica support with regular mesopores. The mesoporous silica support was first synthesized and, after calcination, was suspended in a solution of gold bromide (EtOH or H2O) containing a free radical generator activated by UV irradiation and used for the photochemical reduction of gold precursor. The influence of gold precursor concentration, light intensity and nature of the solvents on the formation and properties of gold nanoparticles (size, dispersion, stability) on the mesoporous SBA-15 support have been studied with the aim of 2 optimizing the dispersion of the gold nanoparticles in the mesoporous network and their chemical stability. The catalytic activity of the resulting AuNPs@SBA-15 nanocomposite was successfully evaluated for the oxidation of benzyl alcohol reaction in liquid-phase.

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“…Screen-printing technology is an advanced method of manufacturing cost-effective, compact, and portable monitoring analytical devices for on-site analysis [ 31 , 32 , 33 ]. All-solid-state potentiometric-sensing electrodes have been extensively used in the determination of different ionic species because of their high reliability, good durability, and simple operation [ 34 , 35 , 36 , 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

All-Solid-State Potentiometric Ion-Sensors Based on Tailored Imprinted Polymers for Pholcodine Determination

et al. 2021

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In recent times, the application of the use of ion-selective electrodes has expanded in the field of pharmaceutical analyses due to their distinction from other sensors in their high selectivity and low cost of measurement, in addition to their high measurement sensitivity. Cost-effective, reliable, and robust all-solid-state potentiometric selective electrodes were designed, characterized, and successfully used for pholcodine determination. The design of the sensor device was based on the use of a screen-printed electrode modified with multiwalled carbon nanotubes (MWCNTs) as a solid-contact transducer. Tailored pholcodine (PHO) molecularly imprinted polymers (MIPs) were prepared, characterized, and used as sensory receptors in the presented potentiometric sensing devices. The sensors exhibited a sensitivity of 31.6 ± 0.5 mV/decade (n = 5, R2 = 0.9980) over the linear range of 5.5 × 10−6 M with a detection limit of 2.5 × 10−7 M. Real serum samples in addition to pharmaceutical formulations containing PHO were analyzed, and the results were compared with those obtained by the conventional standard liquid chromatographic approach. The presented analytical device showed an outstanding efficiency for fast, direct, and low-cost assessment of pholcodine levels in different matrices.

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XPS and NRA investigations during the fabrication of gold nanostructured functionalized screen-printed sensors for the detection of metallic pollutants

Cited by 23 publications

References 40 publications

Carbon Nanotubes Modified With Au for Electrochemical Detection of Prostate Specific Antigen: Effect of Au Nanoparticle Size Distribution

Carbon Nanotubes Modified With Au for Electrochemical Detection of Prostate Specific Antigen: Effect of Au Nanoparticle Size Distribution

Photo-induced generation of size controlled Au nanoparticles on pure siliceous ordered mesoporous silica for catalytic applications

All-Solid-State Potentiometric Ion-Sensors Based on Tailored Imprinted Polymers for Pholcodine Determination

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