Synthesis and characterization of composite Hg-polyaniline powder material

Bouazza, Sofiane; Hauchard, Didier; Laurent, Le Pollès

doi:10.1016/j.electacta.2006.03.073

Cited by 19 publications

(7 citation statements)

References 31 publications

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“…For instance, polyaniline has been effectively used to preconcentrate and separate metals before instrumental analysis , . The redox reaction between polyaniline and Hg(I) has been exploited to prepare a metallic−polymer composite for trace metal analysis by anodic stripping voltammetry . However, compared with other areas of inquiry, this material is much less understood in terms of environmental applications.…”

Section: Introductionmentioning

confidence: 99%

Removal of Aqueous Hg(II) by Polyaniline: Sorption Characteristics and Mechanisms

Wang

Deng

Chen

et al. 2009

Environ. Sci. Technol.

314

166

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A polyaniline (PAN) prepared by chemical oxidation method was studied for Hg(II) removal from aqueous solutions. Batch adsorption results showed solution pH values had a major impact on mercury adsorption by this sorbent with optimal removal observed around pH 4-6. At both acidic and alkaline solutions beyond this optimal pH window, sorption capacity of PAN was substantially lowered, with the impact less pronounced at pH above 6. Among the water constituents tested, only chloride and humic acid had significant inhibition on mercury removal due to competitive complexation. In the range of 0.02-0.2 M, ionic strength had less impact on Hg(II) removal by PAN while further increase in background electrolyte concentration to 1.0 M substantially decreased mercury removal. An adsorption mechanism was proposed by analyzing the XPS spectra of the key elements (N(1s), Cl(2p) and Hg(4f)) on polyaniline surfaces and the change of its electrokinetic properties, both before and after Hg(II) adsorption. Specifically, at pH 5.5, it is likely that all the nitrogen-containing functional groups on the polymer matrix including imine, protonated imine and amine could be responsible for mercury adsorption, with imine having the highest affinity while the remaining two having similar strength to complex mercury.

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Section: Introductionmentioning

confidence: 99%

Removal of Aqueous Hg(II) by Polyaniline: Sorption Characteristics and Mechanisms

Wang

Deng

Chen

et al. 2009

Environ. Sci. Technol.

314

166

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“…Mercury (II) caused interference for the proposed silver selective electrode ( Table 2). The higher selectivity of the electrode for Ag + and Hg 2+ ions with respect to other ions can be attributed to various factors; (1) silver and mercury ions are soft acids and have high affinity for interaction with π electrons of both PANI and SSA [33,61]; (2) Ag + and Hg 2+ effectively coordinate with the N atom of PANI and binding sites of SSA [27,62]; and (3) during the templating process, proper recognition sites for silver ion are formed throughout the PANI/SSA membrane as a result of the guestinduced reorientation of binding sites of the membrane. The selectivity pattern of the membrane strongly depends on the templating process.…”

Section: Potentiometric Response Of the Modified Electrodementioning

confidence: 99%

Electrochemically induced regioregularity of the binding sites of a polyaniline membrane as a powerful approach to produce selective recognition sites for silver ion

Hashemi

Zanganeh

2016

Journal of Electroanalytical Chemistry

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“…Most of the studies in this field concern the deposition of noble metals Au [16,[210][211][212][213][214][215][216][217][218][219][220][221][222], Ag [223][224][225][226][227][228][229][230][231][232][233][234][235], Pd [156,158,[236][237][238][239][240][241][242][243][244][245][246][247][248], Pt [249,250] and Hg [251,252], with equilibrium potentials that are positive enough with respect to the potentials of oxidation transitions in most CPs, e.g. PANI, PPY etc.…”

Section: Use Of the Polymer Materials As Reductantmentioning

confidence: 99%

Metallic‐Based Nanocomposites of Conductive Polymers

Tsakova

2010

Nanostructured Conductive Polymers

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IntroductionSince the remarkable discovery of high electrical conductivity in polymer materials in 1977 [1], studies on conductive polymers (CP 1 ) have developed into interdisciplinary research expanding in various directions. A significant impetus to the field was given by materials scientists in their attempts to combine the unique properties of conductive polymers with those of other inorganic and organic materials. Thus, in the last two decades, research on the synthesis of CP-based composite materials has flourished and resulted in the development of a great variety of new materials with interesting specifically designed properties. The accumulation of a great number of studies on nanocomposite materials has provoked the recent appearance of several review articles [2-7] attempting to summarize, from different specific points of view, the advances made in the field. Thus, electrochemical aspects [2,7] of CP-based composites, optical and electronic properties [3], polyaniline(PANI)-based nanocomposites [4], the involvement of composites of CPs in chemical sensing [5], and the incorporation of metallocenes in CPs [6] have been extensively discussed.

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Synthesis and characterization of composite Hg-polyaniline powder material

Cited by 19 publications

References 31 publications

Removal of Aqueous Hg(II) by Polyaniline: Sorption Characteristics and Mechanisms

Removal of Aqueous Hg(II) by Polyaniline: Sorption Characteristics and Mechanisms

Electrochemically induced regioregularity of the binding sites of a polyaniline membrane as a powerful approach to produce selective recognition sites for silver ion

Metallic‐Based Nanocomposites of Conductive Polymers

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