A Multivariate Curve Resolution evaluation of an in-situ ATR-FTIR spectroscopy investigation of the electrochemical reduction of graphene oxide

Pfaffeneder-Kmen, Martin; Casas, Ignacio Falcón; Naghilou, Aida; Trettenhahn, Günter; Kautek, Wolfgang

doi:10.1016/j.electacta.2017.09.124

Cited by 31 publications

(23 citation statements)

References 26 publications

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“…The FT-IR spectra of NGO support and of the nanocomposites prepared, presented in Figure 10, provide information about their surface chemistry before (black line) and after the degradation of RB5 (red line). For the NGO support, the spectrum shows bands at 1110, 1228, 1370, 1460, and 1580 cm −1 that may correspond to alkoxy, epoxy and carboxyl groups, respectively [54]. The spectrum of NGO-Mn 3 O 4 nanocomposite, revealed that the carboxyl bands of NGO were not visible, may be due to their participation as nucleation centers and/or as a consequence of the thermal treatment during the synthesis.…”

Section: Effect Of Contact Timementioning

confidence: 97%

Reactive Black 5 Degradation on Manganese Oxides Supported on Sodium Hydroxide Modified Graphene Oxide

et al. 2019

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Sodium hydroxide-modified graphene oxide was used as manganese oxides support for the preparation of nanocomposites via a one-pot preparation route for the degradation of Reactive Black 5. The nanocomposites were characterized for their structure by X-ray diffraction, for their textural properties by Nitrogen adsorption, and for their surface chemistry by Fourier transform infrared spectroscopy, potentiometric titration, and thermal analysis measurements. The nanocomposites prepared showed to possess high activity for the degradation/oxidation of Reactive Black 5 at ambient conditions, without light irradiation, which was higher than that of the precursors manganese oxides and can be attributed to the synergistic effect of the manganese oxides and the modified graphene oxide.

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Section: Effect Of Contact Timementioning

confidence: 97%

Reactive Black 5 Degradation on Manganese Oxides Supported on Sodium Hydroxide Modified Graphene Oxide

et al. 2019

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“…A large number of applications regarding ATR-IR-SEC are reported in literature. Some examples are the study of metalloproteins, 71,76 the study of CO 2 reduction without 74 and with the combination of SEIRAS, 78 the reduction of graphene oxide, 79,80 technique development [81][82][83] and practical applications such as observing lubricant degradation. 70 2.2.4 IR-SEC microscopy.…”

Section: Transmission Ir-secmentioning

confidence: 99%

Spectroelectrochemistry, the future of visualizing electrode processes by hyphenating electrochemistry with spectroscopic techniques

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Olthuis

et al. 2020

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The combination of electrochemistry and spectroscopy, known as spectroelectrochemistry (SEC), is an already established approach. By combining these two techniques, the relevance of the data obtained is greater than what it would be when using them independently. A number of review papers have been published on this subject, mostly written for experts in the field and focused on recent advances. In this review, written for both the novice in the field and the more experienced reader, the focus is not on the past but on the future. The scope is narrowed down to four techniques the authors claim to have the most potential for the future, namely: infrared spectroelectrochemistry (IR-SEC), Raman spectroelectrochemistry (Raman-SEC), nuclear magnetic resonance spectroelectrochemistry (NMR-SEC) and, perhaps slightly more controversial but certainly promising, electrochemistry mass-spectrometry (EC-MS).

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“…Graphene nanosheets (GN) were chemically modified according to the above-mentioned hydrothermal procedure. The FTIR spectra of GN and chemically modified GN (GN-chem) are presented in Figure S1 (supporting information) [13]. In the spectrum of GN, the appeared bands are associated with -OH (~3000-3250 cm −1 ), -CH 2 (~2850-2923 cm −1 ), C=C (~1580-1630 cm −1 ) and C-O-C (~1225 cm −1 ) groups, indicating the presence of surface hydroxyl groups and also adsorbed water molecules [11,14], symmetric and asymmetric C-H bands in CH 2 [14,15], C skeletal vibrations [14] and epoxy [14,16] groups, respectively.…”

Section: Characterization Of Modified Graphene Nanosheetsmentioning

confidence: 99%

Hybrid Sol–Gel Silica Coatings Containing Graphene Nanosheets for Improving the Corrosion Protection of AA2024-T3

et al. 2020

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In the present work, nanostructured graphene nanosheets were added to hybrid silica sols and deposited on aluminium alloy A2024-T3 to study the effect on the corrosion behaviour. Sols were prepared using tetraethyl-orthosilicate (TEOS), 3-glycidoxypropyl-trimethoxysilane (GPTMS) and a colloidal silica suspension (LUDOX) as silica precursors with adding chemically modified graphene nanosheets (GN-chem). The graphene nanosheets were modified through a straightforward and simple hydrothermal approach and then, dispersed into a silica sol (SiO2/GN-chem). ATR-FTIR was used to optimize the silica sol–gel synthesis and to confirm the cross-linking of the silica network. The corrosion behaviour of the SiO2/GN-chem coatings was also analysed by electrochemical measurement (potentiodynamic polarization) in 0.05 M NaCl solution. The results showed that the incorporation of modified graphene nanosheets into hybrid silica sol–gel coatings affected the corrosion properties of the substrates. An improvement in the corrosion resistance was observed likely due to the enhanced barrier property and hydrophobic behaviour obtained by incorporation of GN-chem and colloidal silica nanoparticles.

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A Multivariate Curve Resolution evaluation of an in-situ ATR-FTIR spectroscopy investigation of the electrochemical reduction of graphene oxide

Cited by 31 publications

References 26 publications

Reactive Black 5 Degradation on Manganese Oxides Supported on Sodium Hydroxide Modified Graphene Oxide

Reactive Black 5 Degradation on Manganese Oxides Supported on Sodium Hydroxide Modified Graphene Oxide

Spectroelectrochemistry, the future of visualizing electrode processes by hyphenating electrochemistry with spectroscopic techniques

Hybrid Sol–Gel Silica Coatings Containing Graphene Nanosheets for Improving the Corrosion Protection of AA2024-T3

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