The optimization of enzyme immobilization at Au-Ti nanotextured platform and its impact onto the response towards glucose in neutral media

Lipińska, Wiktoria; Siuzdak, Katarzyna; Ryl, Jacek; Barski, Piotr; Śliwiński, Gerard; Grochowska, Katarzyna

doi:10.1088/2053-1591/ab4fab

Cited by 15 publications

(15 citation statements)

References 85 publications

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“…The second and smaller component could be attributed to surface hydroxyl species but also adventitious carbon The Ti2p spectra are composed of a single chemical state, represented by the peak doublet where Ti2p 3/2 is positioned at 458.8 eV (Figure 7a). The peaks in the deconvoluted energy range are characteristic for the TiO 2 nanotubes as reported in our previous studies [39,59]. Although XRD and Raman spectroscopy may suggest the presence of Ti 3+ ions, no other oxidation states were present confirming that the chemistry of TiO 2 -NTs was not significantly altered during the modification process.…”

Section: Resultssupporting

confidence: 79%

The Effect of Laser Re-Solidification on Microstructure and Photo-Electrochemical Properties of Fe-Decorated TiO2 Nanotubes

et al. 2020

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Fossil fuels became increasingly unpleasant energy source due to their negative impact on the environment; thus, attractiveness of renewable, and especially solar energy, is growing worldwide. Among others, the research is focused on smart combination of simple compounds towards formation of the photoactive materials. Following that, our work concerns the optimized manipulation of laser light coupled with the iron sputtering to transform titania that is mostly UV-active, as well as exhibiting poor oxygen evolution reaction to the material responding to solar light, and that can be further used in water splitting process. The preparation route of the material was based on anodization providing well organized system of nanotubes, while magnetron sputtering ensures formation of thin iron films. The last step covering pulsed laser treatment of 355 nm wavelength significantly changes the material morphology and structure, inducing partial melting and formation of oxygen vacancies in the elementary cell. Depending on the applied fluence, anatase, rutile, and hematite phases were recognized in the final product. The formation of a re-solidified layer on the surface of the nanotubes, in which thickness depends on the laser fluence, was shown by microstructure studies. Although a drastic decrement of light absorption was recorded especially in UV range, laser-annealed samples have shown activity under visible light even 20 times higher than bare titania. Electrochemical analysis has shown that the improvement of photoresponse originates mainly from over an order of magnitude higher charge carrier density as revealed by Mott-Schottky analysis. The results show that intense laser light can modulate the semiconductor properties significantly and can be considered as a promising tool towards activation of initially inactive material for the visible light harvesting.

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Section: Resultssupporting

confidence: 79%

The Effect of Laser Re-Solidification on Microstructure and Photo-Electrochemical Properties of Fe-Decorated TiO2 Nanotubes

et al. 2020

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“…In the XPS spectrum, peak of C(1s) peak moved from 284 eV and focuses around 284. [22][23][24] With regards to the binding energy of the N(1s) spectrum, we observed a central peak around 400 eV corresponding to pure N(1s) peak at 399 eV along with peaks at 398.3, 398.8, 399.8, and 400.8 eV (Fig. 3c), which corresponds to C-N, C≡N, C=N, and NO bonds, respectively.…”

Section: Surface Characterization Of the Antifouling Coatingmentioning

confidence: 89%

Rapid antifouling nanocomposite coating enables highly sensitive multiplexed electrochemical detection of myocardial infarction and concussion markers

S¹,

Durr²,

Yafia³

et al. 2021

Preprint

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Here we describe an ultra-fast (< 1 min) method for coating electrochemical (EC) sensors with an anti-fouling nanocomposite layer that can be stored at room temperature for months, which provides unprecedented sensitivity and selectivity for diagnostic applications. We leveraged this method to develop a multiplexed diagnostic platform for detection of biomarkers that could potentially be used to triage patients with myocardial infarction and traumatic brain injury using only 15 microliters of blood. Single-digit pg/mL sensitivity was obtained within minutes for all the biomarkers tested in unprocessed human plasma samples and whole blood, which is much faster and at least 50 times more sensitive than traditional ELISA methods, and the signal was stable enough to be measured after one week of storage. The multiplexed EC sensor platform was validated by analyzing 22 patient samples, which demonstrated excellent correlation with reported clinical values.

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“…Finally, the presence of TiO 2 in the Cu–Sn–TiO 2 samples was confirmed with the Ti 2p 3/2 peak emerging at 459.2 eV [57] , [65] . The peak position was not altered depending on the agitation mode used, however, the amount of titania at the surface was over three times higher in the case of ultrasonic agitation.…”

Section: Resultsmentioning

confidence: 72%

“…The Cu 2p spectra recorded on the surface of all investigated coatings show a complex multiplet structure. The Cu 2p 3/2 peak for the most dominant component was located at 933.0 eV, which is characteristic of metallic Cu [56] , [57] . However, it should be noted that Cu + is also to be found within the same binding energy range.…”

Section: Resultsmentioning

confidence: 98%

Ultrasonic-assisted electrodeposition of Cu-Sn-TiO2 nanocomposite coatings with enhanced antibacterial activity

Kharitonov

Kasach

Sergievich

et al. 2021

Ultrasonics Sonochemistry

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Highlights Cu–Sn–TiO 2 nanocomposite coatings were electrodeposited under mechanical and ultrasonic agitation; Effect of TiO 2 nanoparticles and current density on structural and antibacterial properties was investigated. Distribution of TiO 2 in the coatings improved under ultrasonic agitation; Antibacterial activity of Cu–Sn–TiO 2 coatings was enhanced by ultrasonic agitation.

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The optimization of enzyme immobilization at Au-Ti nanotextured platform and its impact onto the response towards glucose in neutral media

Cited by 15 publications

References 85 publications

The Effect of Laser Re-Solidification on Microstructure and Photo-Electrochemical Properties of Fe-Decorated TiO2 Nanotubes

The Effect of Laser Re-Solidification on Microstructure and Photo-Electrochemical Properties of Fe-Decorated TiO2 Nanotubes

Rapid antifouling nanocomposite coating enables highly sensitive multiplexed electrochemical detection of myocardial infarction and concussion markers

Ultrasonic-assisted electrodeposition of Cu-Sn-TiO2 nanocomposite coatings with enhanced antibacterial activity

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