Study of polypyrrole aging by XPS, FTIR and conductivity measurements

Tabačiarová, Jana; Mičušík, Matej; Fedorko, Pavol; Omastová, Mária

doi:10.1016/j.polymdegradstab.2015.07.021

Cited by 252 publications

(145 citation statements)

References 36 publications

Supporting

Mentioning

117

Contrasting

Order By: Relevance

“…The N 1s signal in Figure c is reflected by four peaks at around 397.5 (C═N), 399.6 (N—H), 400.6 (polaron, C—N + ), and 402.2 (bipolaron, C═N + ) eV. All the data are in line with those of the previous works . Figure d shows the Cl 2p region spectrum.…”

Section: Resultssupporting

confidence: 87%

“…Three pairs of Cl 2p peaks with Cl 2p 3/2 values of 197.2, 198.3, and 200.7 eV can be obtained. The Cl 2p 3/2 signals at 197.2 and 200.7 eV indicate the existence of ionic and covalent chlorides . The intermediate chlorine signals are related to the anionic chlorides, which are caused by the charge–transfer interaction between the chloride ions and the polypyrrole chain …”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Polypyrrole as a Novel Chloride‐Storage Electrode for Seawater Desalination

et al. 2019

View full text Add to dashboard Cite

The desalination battery is regarded as a promising high‐efficiency technology for seawater desalination on account of the reversible salt‐ion storage in the bulk of the battery electrodes. Herein, polypyrrole is used as a new electrode to store chloride ions in seawater desalination. The as‐prepared polypyrrole composite electrode shows good electrochemical reversibility in chloride‐ion storage and removal in the aqueous NaCl electrolyte. When this chloride electrode is incorporated with a sodium electrode of sodium manganese oxide, a desalination battery that can capture chloride and sodium ions from the electrolyte through the electrochemical redox reactions is obtained. A stable and reversible capacity of 40 mAh g−1 of the desalination battery is achieved after 200 cycles.

show abstract

Section: Resultssupporting

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Polypyrrole as a Novel Chloride‐Storage Electrode for Seawater Desalination

et al. 2019

View full text Add to dashboard Cite

show abstract

“…67 FT-IR spectrum of the as-obtained sample is shown in Figure 1F, and the peaks observed are near 3430, 2925, 2368, 1644, 1545, 1440, 1209, 1162, 1072, 987, 881, 828, 779, 668, and 556 cm −1 . 48,70 The peaks at 1162, 1072, and 881 cm −1 are ascribed to stretching vibration of the C─N and C─N + groups; on the other hand, the peaks at 2925 cm −1 (N─H), 1545 cm −1 (C═C), 1440 cm −1 (C─C), 1209 cm −1 (C─C), 987 cm −1 (C═C), 828 cm −1 (C─H), and 779 cm -1 (C─H) are attributed to PPy stretching modes. 69 The broad peak around 1644 cm −1 is assigned to the C═O groups because of the overoxidation of PPy that may restrict the π- conjugated network.…”

Section: Resultsmentioning

confidence: 99%

In situ chemo‐polymerized polypyrrole‐coated filter paper for high‐efficient solar vapor generation

et al. 2019

View full text Add to dashboard Cite

It is well recognized that combining nonpotable water with solar energy to desalinate water and produce water vapor is an effective route to solve the shortage of fresh water. However, the solar vapor generation suffers from either low solar energy efficiency or complex and high-cost devices. Herein, we explore a black membrane based on polypyrrole (PPy) and filter paper to enhance solar-to-vapor conversion performance, thus providing a low-cost, stable, and strong efficient solar vapor generator. This device displays high solarto-vapor conversion efficiencies of up to approximately 92.2% and 95.6% under irradiation of 1 and 4 kW m −2 , respectively. Therefore, this paper-based high solar-to-vapor conversion and scalable evaporator provides a promising solution to the problem of freshwater scarcity and nonrenewable recourses.

show abstract

“…One pair of peaks at 197.2 eV and 198.9 eV correspond to Cl − , which is an ionic chlorine species, possibly causing by residual metal chloride or the adsorption of Cl ion on the alkaline position of carbon material. In addition, the other pair of peaks at 200.4 eV and 202.1 eV correspond to an adsorbed chlorine, which may be the chlorine adsorption on the carbon surface . It would be further illustrated later while explaining the effect of Cl.…”

Section: Resultsmentioning

confidence: 99%

Chlorine‐Promoted Nitrogen and Sulfur Co‐Doped Biocarbon Catalyst for Electrochemical Carbon Dioxide Reduction

Cai

Qin

et al. 2020

ChemElectroChem

View full text Add to dashboard Cite

The conversion of carbon dioxide (CO2) to high value‐added products is a forward‐looking work, and has a good application prospect in mitigating energy crisis and climate problems. Recently, the electrochemical CO2 reduction reaction (ECRR) has attracted wide attention because of its controllable target products and high conversion efficiency. Here, a sulfur‐nitrogen co‐doped porous biocarbon catalyst derived from biomass lignin is reported, which has a high Faradaic efficiency (FE) of 95.9 % for ECRR to CO at a low overpotential of 490 mV and the corresponding average current density and yield of CO are −1.98 mA cm−2 and 8.8 L m−2 h−1, respectively. During up to 18 hours of stability test, there was no significant change in catalyst activity and selectivity of CO and H2. Besides, we systematically demonstrated that nitrogen doping is beneficial to the selectivity for ECRR to CO, and the adsorbed chlorine on the surface of biocarbon derived from hydrochloric acid washing greatly enhances the activity of ECRR, and thereby increases the yield of CO.

show abstract

Study of polypyrrole aging by XPS, FTIR and conductivity measurements

Cited by 252 publications

References 36 publications

Polypyrrole as a Novel Chloride‐Storage Electrode for Seawater Desalination

Polypyrrole as a Novel Chloride‐Storage Electrode for Seawater Desalination

In situ chemo‐polymerized polypyrrole‐coated filter paper for high‐efficient solar vapor generation

Chlorine‐Promoted Nitrogen and Sulfur Co‐Doped Biocarbon Catalyst for Electrochemical Carbon Dioxide Reduction

Contact Info

Product

Resources

About