Chemical anchoring of silica nanoparticles onto polyaniline chains via electro-co-polymerization of aniline and N-substituted aniline grafted on surfaces of SiO2

Liu, Xiao Xia; Dou, Yuqian; Wu, Jian; Xiao, Peng

doi:10.1016/j.electacta.2008.01.064

Cited by 24 publications

(16 citation statements)

References 32 publications

(42 reference statements)

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“…In a highly acidic medium of HCl, aniline monomers and the silanol groups in the surface of amorphous SiO 2 undergoes protonation and so in the AHCl solution with SiO 2 dispersion particles, it is expected that SiOH 2 + [15] and anilinium cations are present. The anilinium cations may adsorb to the SiO 2 particle surfaces through hydrogen bonding between the amine nitro- gen groups of aniline and the protonated silanols of SiO 2 [7]. Upon addition of the oxidant, the formation of more uniform PAni particles in the bulk polymerization is observed because it grows from a uniform central core compared to the PAni precipitates which are just randomly formed in the polymerization reaction.…”

Section: Quantification Of Response To Ammoniamentioning

confidence: 92%

“…The inorganic-organic interaction of SiO 2 and PAni prevented the occurrence of larger aggregations because the H-bonding between the amine of aniline and silanol of SiO 2 pushed the polymer chains apart which will inhibit the occurrence of secondary growth forming thinner nanostructures [7,8] as observed in the SEM micrographs.…”

Section: Quantification Of Response To Ammoniamentioning

confidence: 93%

“…Silica (SiO 2 ) is an interesting material that can be used to improve the properties of PAni. The H-bonding between amine groups in PAni and the hydroxyl groups in SiO 2 was found to prevent the aggregation of PAni during film-casting leading to formation of nanofibers [7]. Adding of colloidal SiO 2 also prevented macroscopic agglomeration resulting to the formation of thinner films with reduced surface roughness [8].…”

mentioning

confidence: 97%

“…While there have been numerous studies on the production of PAni/SiO 2 , lesser studies have explored the usage of stable solid matrices in the production of the nanostructured composite material and its application as a sensing material. The usage of the stable solid matrix is considered so as to promote strong covalent bonding of the polymer and the matrix [7] resulting to a more stable composite material compared to those using soft SiO 2 templates.…”

mentioning

confidence: 99%

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Growth and characteristics of amorphous silica‐modified polyaniline films for ammonia sensor application

Odarve

Vequizo

2015

Phys. Status Solidi C

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The characteristic properties of the nanostructured polyaniline (PAni) films synthesized via chemical oxidative polymerization of aniline on glass substrates using amorphous cristobalite silica (SiO2) as structural growth director are presented in this study. The change in the resistance of the sample was monitored upon exposure to ammonia gas using two‐probe method for two cycles, 40 min each. The structural and morphological property of the PAni/SiO2 samples were studied and compared to PAni samples alone using FTIR spectroscopy and scanning electron microscopy. It was found out that PAni/SiO2 films have higher and uniform response to ammonia with good repeatability during the two cycles and recovery upon removal of ammonia source. (© 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Section: Quantification Of Response To Ammoniamentioning

confidence: 92%

Section: Quantification Of Response To Ammoniamentioning

confidence: 93%

mentioning

confidence: 97%

mentioning

confidence: 99%

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Growth and characteristics of amorphous silica‐modified polyaniline films for ammonia sensor application

Odarve

Vequizo

2015

Phys. Status Solidi C

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“…The EIS is, usually, utilized to study parameters such as charge transfer resistance (R ct ), double layer capacitance (C dl ), faradaic capacitance etc. of modified electrodes [31][32][33][34] . EIS on PAni and its derivatives modified electrodes have been reported [34][35][36][37] This work reports on the electrochemical behaviour and catalytic ability of poly(Ani-co-oPDA) modified CG electrode towards electro-oxidation of AA.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Activity and Electrochemical Impedance Spectroscopy of Poly(Aniline-Co-Ortho-Phenylenediamine) Modified Electrode on Ascorbic Acid

Parsa¹,

Amanzadeh-Salout²

2016

Orient. J. Chem

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The poly(aniline-co-ortho-phenylenediamine) modified composite graphite (poly(Anico-oPDA)/CG)) has shown excellent electrocatalytic response towards the oxidation of ascorbic acid (AA). The anodic peak potential (E pa ) of AA has shifted from +0.48 V (bare CG) to +0.17 V (poly(Ani-co-oPDA/CG)). The anodic peak currents (I pa ) are linearly dependent upon the square root of scan rate indicating a favourable diffusion controlled process. The electro oxidation of AA on poly(Ani-co-oPDA/CG is more feasible in acidic medium than in either neutral or alkaline medium. This is shown by negative shift of E pa . The charge transfer resistance (R ct ) at the poly(Ani-co-oPDA/ CG) shows that the rate of the electro oxidation of AA changes with electrode potential. The R ct and diffusion process are dependant not only on applied potential and electrode material but also on the AA.The poly(aniline-co-ortho-phenylenediamine) modified composite graphite (CG) electrode has shown excellent electrocatalytic response towards the oxidation of ascorbic acid (AA). Charge transfer resistance (R ct ) at the poly(Ani-co-oPDA/CG) shows that the rate of the electro oxidation of AA changes with electrode potential.

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One‐Dimensional Nanostructured Polyaniline: Syntheses, Morphology Controlling, Formation Mechanisms, New Features, and Applications

Wang¹,

Zhang²

2012

Adv Polym Technol

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One‐dimensional nanostructured polyaniline (1D nano‐PANI), including nanofibers, nanowires, nanobelts, nanotubes, nanorods, nanoneedles, and nanosticks, has been extensively studied recently due to its unique properties and many potential applications. As a continuation of our previous review on 1D nano‐PANI (D. H. Zhang and Y. Y. Wang, Mater Sci Eng B 2006, 134(1), 9–19), the research and development of 1D nano‐PANI, including both syntheses and applications, in the past 5 years (2006–2010) are reviewed in this paper. Newly invented chemical methods for fabrication of 1D nano‐PANI, such as solid‐state polymerization, seeding polymerization, UV light‐ and microwave‐assisted polymerization, plasma‐induced polymerization, porous membrane controlled polymerization, and vapor phase polymerization, are briefly reviewed, and morphology controlling of the nanostructures during several synthesizing processes are reported and discussed at first. The formation mechanisms and key factors that affect the morphology evolution of the 1D nano‐PANI are discussed. Novel features of 1D nano‐PANI, such as aligned or oriented, longer, self‐doped, chiral, derivative, carbonized, and dendritic PANI, are summarized. Finally, newly exploited applications of 1D nano‐PANI in the past few years, such as sensors (e.g., gases sensors, biosensors, moisture or humidity sensors, TNT sensors, taste sensors, and noble metal ion sensors), absorbents, catalysts, actuators, supercapacitors, batteries, fuel cells, solar cells, electrochromic devices, hydrogen storages, surface modifiers, field‐effect transistors, and functional materials, are discussed in detail. © 2012 Wiley Periodicals, Inc. Adv Polym Techn 32: E323–E368, 2013; View this article online at http://wileyonlinelibrary.com. DOI 10.1002/adv.21283

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Chemical anchoring of silica nanoparticles onto polyaniline chains via electro-co-polymerization of aniline and N-substituted aniline grafted on surfaces of SiO2

Cited by 24 publications

References 32 publications

Growth and characteristics of amorphous silica‐modified polyaniline films for ammonia sensor application

Growth and characteristics of amorphous silica‐modified polyaniline films for ammonia sensor application

Electrocatalytic Activity and Electrochemical Impedance Spectroscopy of Poly(Aniline-Co-Ortho-Phenylenediamine) Modified Electrode on Ascorbic Acid

One‐Dimensional Nanostructured Polyaniline: Syntheses, Morphology Controlling, Formation Mechanisms, New Features, and Applications

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