Doping process effect of polyaniline doped with poly(styrenesulfonic acid) supported platinum for methanol oxidation

Kuo, Chung Wen; Chen, Sin Jhih; Chen, Pin Rong; Wu, Tzi Yi; Tsai, Wen Ta; Tseng, Ching Guey

doi:10.1016/j.jtice.2012.11.017

Cited by 17 publications

(9 citation statements)

References 42 publications

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“…The latter is based on data for the polymerization and redox charges and should be also an estimate for doping. PSSA-doped PANIs were studied by means of XPS in several cases [13][14][15][16] but information on their electrochemical behavior obtained with the same materials was not communicated. In some cases [13,16] PANI was obtained chemically but electrochemical studies were not in the focus of interest.…”

Section: Introductionmentioning

confidence: 99%

“…In some cases [13,16] PANI was obtained chemically but electrochemical studies were not in the focus of interest. In the remaining investigations [14,15] the polymerization was electrochemical but it was carried out in the presence of inorganic ions. In subsequent steps PANI was chemically transformed in the emeraldine base state and thereafter re-doped with PSSA.…”

Section: Introductionmentioning

confidence: 99%

“…Apart from simple inorganic anions (e.g., chloride, sulfate or perchlorate), several sulfonic acids such as camphorsulfonic, dodecylbenzene sulfonic, acrylamidomethylpropane sulfonic or p-toluene sulfonic were also explored with respect to the influence on PANI properties [ 4 , 5 , 6 , 7 , 8 , 9 ]. Furthermore, electrochemical and/or chemical synthesis of PANI was studied in the presence of polysulfonic acids, e.g., polystyrenesulfonic (PSSA) or poly(2-acrylamido-2-methyl-1-propanesulfonic) (PAMPSA) [ 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. In the recent years a series of papers [ 19 , 20 , 21 , 22 , 23 , 24 , 25 ] was devoted to the properties of PANI obtained in the presence of two poly(amidosulfonic acids) that are identical in their chemical composition but differ in the rigidity of their backbone-poly-(4,4′-(2,2′-disulfonic acid)-diphenylene-tere-phthalamide) (t-PASA, rigid backbone) and poly-(4,4′-(2,2′-disulfonic acid)-diphenylene-iso-phthalamide) (i-PASA, semi-rigid backbone) ( Scheme 1 ).…”

Section: Introductionmentioning

confidence: 99%

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Electrochemically-Obtained Polysulfonic-Acids Doped Polyaniline Films—A Comparative Study by Electrochemical, Microgravimetric and XPS Methods

et al. 2020

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Polyaniline (PANI) layers are electrochemically obtained in the presence of four polysulfonic acids with different rigidities of the polymer backbone-iso-(and tere-)poly-(4,4′-(2,2′-disulfonic acid)-diphenylene-iso(tere)-phthalamide (i-PASA and t-PASA), polystyrenesulfonic acid (PSSA) and poly(2-acrylamido-2-methyl-1-propanesulfonic acid) (PAMPSA). Combined microgravimetric (EQCM) and electrochemical measurements are carried out in the course of polymerization and repetitive redox switching. It is found that after synthesis PASA-doped PANIs shows good stability with low exchange of mass in the course of voltammetric scans, while PAMPSA-doped PANI contains a large amount of water that gradually becomes expelled in the repetitive redox switching. PANI obtained in the presence of PSSA takes an intermediate position with respect to mass exchanged in the electrochemical redox process. XPS studies are used to obtain data for the extent of doping of the different PANI materials. The results show high doping level (about 0.5) for PASA- and PAMPSA- and lower level (0.32) for PSSA-doped PANI layers. Repeated electrochemical studies carried out with the specimens investigated by XPS after long-term storage in the dry state give evidence for structural rearrangement, perfect recuperation of the initial electrochemical activity and high stability of the electrochemical response.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electrochemically-Obtained Polysulfonic-Acids Doped Polyaniline Films—A Comparative Study by Electrochemical, Microgravimetric and XPS Methods

et al. 2020

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“…A uniform distribution of Pt particles into P(ICA3-co-EDOT2) can twist to form a spatial 3D matrix. As shown in Table 2, the methanol oxidation on P(ICA3-co-EDOT2)-Pt electrode shows higher current density (Ipa) than those reported for PANI-300PSS-Pt [32], Pt/PANI/MGCE [33], Pt/Nano-PDAN/MGCE [34], and PANI-PSS-Pt [11]. However, P(ICA3-co-EDOT2)-Pt electrode shows lower Ipa than that reported for nanotube-Pt [35].…”

Section: Xrd Patternsmentioning

confidence: 76%

Copolymers Based on Indole-6-Carboxylic Acid and 3,4-Ethylenedioxythiophene as Platinum Catalyst Support for Methanol Oxidation

Kuo

Chen

et al. 2015

Catalysts

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Indole-6-carboxylic acid (ICA) and 3,4-ethylenedioxythiophene (EDOT) are copolymerized electrochemically on a stainless steel (SS) electrode to obtain poly(indole-6-carboxylic acid-co-3,4-ethylenedioxythiophene)s (P(ICA-co-EDOT))s. The morphology of P(ICA-co-EDOT)s is checked using scanning electron microscopy (SEM), and the SEM images reveal that these films are composed of highly porous fibers when the feed molar ratio of ICA/EDOT is greater than 3/2. Platinum particles can be electrochemically deposited into the P(ICA-co-EDOT)s and PICA films to obtain P(ICA-co-EDOT)s-Pt and PICA-Pt composite electrodes, respectively. These composite electrodes are further characterized using X-ray photoelectron spectroscopy (XPS), SEM, X-ray diffraction analysis (XRD), and cyclic voltammetry (CV). The SEM result indicates that Pt particles disperse more uniformly into the highly porous P(ICA3-co-EDOT2) fibers (feed molar ratio of ICA/EDOT = 3/2). The P(ICA3-co-EDOT2)-Pt nanocomposite electrode exhibited excellent catalytic activity for the electrooxidation of methanol in these electrodes, which reveals that P(ICA3-co-EDOT2)-Pt nanocomposite electrodes are more promising for application in an electrocatalyst as a support material. OPEN ACCESSCatalysts 2015, 5 1658

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“…Conjugated polymers have sparked enormous attention for applications in solar energy conversion [1,2], electrochromic devices (ECDs) [3][4][5], chemical sensing materials [6,7], catalysts for methanol oxidation in direct methanol fuel cells [8][9][10], and polymer organic light emitting diodes (polymer OLEDs, or PLEDs) [11][12][13] due to their intriguing optical, electrochemical, and structural properties. Among them, the applications of conjugated polymers in developing high contrast electrochromic devices are currently attractive due to their energy-saving and light control properties.…”

Section: Introductionmentioning

confidence: 99%

Applications of Poly(indole-6-carboxylic acid-co-2,2′-bithiophene) Films in High-Contrast Electrochromic Devices

Kuo

Fan

2018

Coatings

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Two homopolymers (poly(indole-6-carboxylic acid) (PInc) and poly(2,2-bithiophene) (PbT)) and a copolymer (poly(indole-6-carboxylic acid-co-2,2-bithiophene) (P(Inc-co-bT))) are electrodeposited on ITO electrode surfaces via electrochemical method. Electrochemical and electrochromic properties of PInc, PbT, and P(Inc-co-bT) films were characterized using cyclic voltammetry and in situ UV-Vis spectroscopy. The anodic P(Inc-co-bT) film prepared using Inc./bT = 1/1 feed molar ratio shows high optical contrast (30% at 890 nm) and coloring efficiency (112 cm 2 C −1 at 890 nm). P(Inc-co-bT) film revealed light yellow, yellowish green, and bluish grey in the neutral, intermediate, and oxidation states, respectively.

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Doping process effect of polyaniline doped with poly(styrenesulfonic acid) supported platinum for methanol oxidation

Cited by 17 publications

References 42 publications

Electrochemically-Obtained Polysulfonic-Acids Doped Polyaniline Films—A Comparative Study by Electrochemical, Microgravimetric and XPS Methods

Electrochemically-Obtained Polysulfonic-Acids Doped Polyaniline Films—A Comparative Study by Electrochemical, Microgravimetric and XPS Methods

Copolymers Based on Indole-6-Carboxylic Acid and 3,4-Ethylenedioxythiophene as Platinum Catalyst Support for Methanol Oxidation

Applications of Poly(indole-6-carboxylic acid-co-2,2′-bithiophene) Films in High-Contrast Electrochromic Devices

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