XPS and FT-IR Characterization of Selected Synthetic Corrosion Products of Zinc Expected in Neutral Environment Containing Chloride Ions

Winiarski, J.; Winiarska, Katarzyna; Szczygieł, I.; Szczygieł, B.

doi:10.1155/2018/2079278

Cited by 175 publications

(120 citation statements)

References 28 publications

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“…All the analyzed samples presented Zn2p3/2 positions in this range (Table 2). This means that the correct zinc speciation, based only on the main photoelectronic peak, is unreliable [36][37][38]. Considering that the typical value of α′ reported for ZnO is equal to 2010.2 ± 0.3 eV (Table 2).…”

Section: Xps Characterizationmentioning

confidence: 99%

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ZnO Nanostructures with Antibacterial Properties Prepared by a Green Electrochemical-Thermal Approach

et al. 2020

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Zinc oxide (ZnO) nanostructures are widely applied materials, and are also capable of antimicrobial action. They can be obtained by several methods, which include physical and chemical approaches. Considering the recent rise of green and low-cost synthetic routes for nanomaterial development, electrochemical techniques represent a valid alternative to biogenic synthesis. Following a hybrid electrochemical-thermal method modified by our group, here we report on the aqueous electrosynthesis of ZnO nanomaterials based on the use of alternative stabilizers. We tested both benzyl-hexadecyl-dimetylammonium chloride (BAC) and poly-diallyl-(dimethylammonium) chloride (PDDA). Transmission electron microscopy images showed the formation of rod-like and flower-like structures with a variable aspect-ratio. The combination of UV–Vis, FTIR and XPS spectroscopies allowed for the univocal assessment of the material composition as a function of different thermal treatments. In fact, the latter guaranteed the complete conversion of the as-prepared colloidal materials into stoichiometric ZnO species without excessive morphological modification. The antimicrobial efficacy of both materials was tested against Bacillus subtilis as a Gram-positive model microorganism.

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Section: Xps Characterizationmentioning

confidence: 99%

“…Considering that the typical value of α′ reported for ZnO is equal to 2010.2 ± 0.3 eV (Table 2). This means that the correct zinc speciation, based only on the main photoelectronic peak, is unreliable [36][37][38].…”

Section: Xps Characterizationmentioning

confidence: 99%

ZnO Nanostructures with Antibacterial Properties Prepared by a Green Electrochemical-Thermal Approach

et al. 2020

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“…Bare Zn foil shows an absorption at ≈1500 cm −1 , corresponding to the v 3 (CO 3 ) 2− antisymmetric stretching mode, which is convincing evidence of the presence of a Zn 5 (CO 3 ) 2 (OH) 6 layer. [14] No obvious absorption can be observed after polishing, indicating that the Zn 5 (CO 3 ) 2 (OH) 6 layer was thoroughly removed. Both the bare Zn metal and the polished Zn were soaked in 1 m ZnSO 4 electrolyte.…”

Section: Doi: 101002/adma202003021mentioning

confidence: 99%

An In‐Depth Study of Zn Metal Surface Chemistry for Advanced Aqueous Zn‐Ion Batteries

et al. 2020

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Although Zn metal has been regarded as the most promising anode for aqueous batteries, it persistently suffers from serious side reactions and dendrite growth in mild electrolyte. Spontaneous Zn corrosion and hydrogen evolution damage the shelf life and calendar life of Zn‐based batteries, severely affecting their industrial applications. Herein, a robust and homogeneous ZnS interphase is built in situ on the Zn surface by a vapor–solid strategy to enhance Zn reversibility. The thickness of the ZnS film is controlled via the treatment temperature, and the performance of the protected Zn electrode is optimized. The dense ZnS artificial layer obtained at 350 °C not only suppresses Zn corrosion by forming a physical barrier on the Zn surface, but also inhibits dendrite growth via guiding the Zn plating/stripping underneath the artificial layer. Accordingly, a side reaction‐free and dendrite‐free Zn electrode is developed, the effectiveness of which is also convincing in a MnO2/ZnS@Zn full‐cell with 87.6% capacity retention after 2500 cycles.

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“…The fraction of total carbon assigned to each of the four signals is summarized in Table 3. Based on literature precedent we hypothesize that the C3 and C4 signals are due to carbonate as a range of carbonates have XPS signals at ~ 289-290 eV [30,31]. Carbonate could be introduced by the synthetic procedure used (which is not divulged by the manufacturer) or by adsorption of carbon dioxide [32,33].…”

Section: X-ray Photoelectron Spectroscopymentioning

confidence: 99%

A Multi-Method Approach for Quantification of Surface Coatings on Commercial Zinc Oxide Nanomaterials

et al. 2020

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Surface functionalization is a key factor for determining the performance of nanomaterials in a range of applications and their fate when released to the environment. Nevertheless, it is still relatively rare that surface groups or coatings are quantified using methods that have been carefully optimized and validated with a multi-method approach. We have quantified the surface groups on a set of commercial ZnO nanoparticles modified with three different reagents ((3-aminopropyl)-triethoxysilane, caprylsilane and stearic acid). This study used thermogravimetric analysis (TGA) with Fourier transform infrared spectroscopy (FT-IR) of evolved gases and quantitative solution 1H nuclear magnetic resonance (NMR) for quantification purposes with 13C-solid state NMR and X-ray photoelectron spectroscopy to confirm assignments. Unmodified materials from the same suppliers were examined to assess possible impurities and corrections. The results demonstrate that there are significant mass losses from the unmodified samples which are attributed to surface carbonates or residual materials from the synthetic procedure used. The surface modified materials show a characteristic loss of functional group between 300–600 °C as confirmed by analysis of FT-IR spectra and comparison to NMR data obtained after quantitative release/extraction of the functional group from the surface. The agreement between NMR and TGA estimates for surface loading is reasonably good for cases where the functional group accounts for a relatively large fraction of the sample mass (e.g., large groups or high loading). In other cases TGA does not have sufficient sensitivity for quantitative analysis, particularly when contaminants contribute to the TGA mass loss. X-ray photoelectron spectroscopy and solid state NMR for selected samples provide support for the assignment of both the functional groups and some impurities. The level of surface group loading varies significantly with supplier and even for different batches or sizes of nanoparticles from the same supplier. These results highlight the importance of developing reliable methods to detect and quantify surface functional groups and the importance of a multi-method approach.

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XPS and FT-IR Characterization of Selected Synthetic Corrosion Products of Zinc Expected in Neutral Environment Containing Chloride Ions

Cited by 175 publications

References 28 publications

ZnO Nanostructures with Antibacterial Properties Prepared by a Green Electrochemical-Thermal Approach

ZnO Nanostructures with Antibacterial Properties Prepared by a Green Electrochemical-Thermal Approach

An In‐Depth Study of Zn Metal Surface Chemistry for Advanced Aqueous Zn‐Ion Batteries

A Multi-Method Approach for Quantification of Surface Coatings on Commercial Zinc Oxide Nanomaterials

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