Synthesis of polypyrrole nanoparticles and its grafting with silica gel for selective binding of chromium(VI)

Mondal, Palash; Roy, Kanak; Bayen, Stéphane; Chowdhury, Pranesh

doi:10.1016/j.talanta.2010.11.037

Cited by 25 publications

(17 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After that, a solution containing 3.08 g of FeCl3.6H2O was included into the above solution, keeping the temperature at 25 °C for 30 min. The mixture was centrifuged and the product was washed three times with water and then dried at 80 o C for 3h and 60 o C for 2h [17]. The scheme of polypyrrol was shown in Scheme 1.…”

Section: Preparation Of Polypyrrol (Abbreviated As Ppy)mentioning

confidence: 99%

Synthesis and characterization of nanocomposite based on polymer as a highly effective supported catalyst in oxidation of alkenes

Salavati

Teimouri

Kazemi

2017

Asain J. Green Chem.

View full text Add to dashboard Cite

Polyphosphotungstate (denoted as PPT) was supported on polypyrrol as organic support (abbreviated as PTT@Ppy) to produce catalytic active supported catalyst. This catalyst was characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), Field emission scanning electron microscopy (FESEM) and UV-vis diffuse reflectance spectroscopy (UV-DRS). The catalyst showed high catalytic activity in the oxidation of alkenes under optimized conditions. In this work, cyclooctene was selected as model alkene for investigation of oxidation procedure, and then under optimized condition, other alkenes were examined. The catalyst could be readily separated from the catalytic system using the centrifuging and loss of activity was negligible when the catalyst was recovered in five consecutive cycles. For this research, a statistical method called response surface methodology (RSM) has been used to economize the number of experiments and their meaningful interpretation. The effect of various factors such as catalyst amount, time, oxidant amount and temperature on oxidation of alkenes were investigated. Optimization results for 0.2 mmol cyclooctene showed that maximum oxidation efficiency 88% was achieved at the optimum conditions: catalyst amount 200 mg, temperature 63, time 5 h and oxidant = 2.15 mmol. KEYWORDS Heteropolyacid Polymer Oxidation Alkenes Support Graphical AbstractSynthesis and characterization of nanocomposite based on polymer … 99

show abstract

Section: Preparation Of Polypyrrol (Abbreviated As Ppy)mentioning

confidence: 99%

Synthesis and characterization of nanocomposite based on polymer as a highly effective supported catalyst in oxidation of alkenes

Salavati

Teimouri

Kazemi

2017

Asain J. Green Chem.

View full text Add to dashboard Cite

show abstract

“…PPY and its composites have been applied in catalysts , sensors , supercapacitor electrode materials , drug delivery materials , electrically switched ion exchange , heavy metal extraction , and so on. Furthermore, PPY and its nanocomposites were also used as adsorbents of Hg(II) ion , nitrate , and Cr(VI) ion from wastewater.…”

Section: Introductionmentioning

confidence: 99%

Controllable preparation and heavy‐metal‐ion adsorption of lignosulfonate‐polypyrrole composite nanosorbent

Luo

Lü

2014

Polymer Composites

View full text Add to dashboard Cite

Lignosulfonate‐polypyrrole (LS‐PPY) composite nanospheres were prepared facilely via an in situ polymerization of pyrrole monomers in the presence of lignosulfonate as a dispersant and ammonium persulfate as an oxidant. The LS‐PPY composite was characterized with Fourier Transform infrared spectroscopy (FTIR), thermogravimetric analysis, wide‐angle X‐ray diffraction (XRD), scanning electron microscopy (SEM), field‐emission SEM, and transmission electron microscopy. Uniform LS‐PPY solid composite nanospheres with an average diameter of 154 nm were obtained. The LS‐PPY composite nanospheres were applied to adsorption of Ag(I) and Pb(II) ions from aqueous solutions. Maximum adsorption capacities of Ag(I) and Pb(II) were up to 759.3 mg g−1 and 207.5 mg g−1, respectively. Furthermore, the silver ions can be reduced to metallic silver nanowires through a redox reaction between the LS‐PPY composite nanospheres and the silver ions. A productive no‐template route to fabrication of LS‐PPY composite nanospheres with controllable size and heavy‐metal‐ion adsorption ability was achieved. POLYM. COMPOS., 36:1546–1556, 2015. © 2014 Society of Plastics Engineers

show abstract

“…Smart and intelligent solid phase required for SPE is made of various organic-inorganic hybrid materials (6,7). At present several researchers are engaged in synthesizing solid phase extractor based on immobilization of SG with poly(4-vinyl pyridine) (8), poly(aniline) (9), poly(pyrrole) (10) and for the selective extraction and pre-concentration of Cr(VI). The problems associated with the SPE of chromate ions are mainly due to low selectivity, poor binding capacity, and narrow pH range.…”

Section: Introductionmentioning

confidence: 99%

“…But the major drawbacks (13,14) of this treatment are a lengthy process, high disposal, and chemical cost. As a result several methods such as electro-chemical precipitation (15), ion-exchange (10), magnetic separation (16), solvent extraction (17), liquid membrane isolation (18), bio-sorption (19), and surface adsorption (20,21) has been reported for the removal of Cr(VI). The problem associated with the removal and recovery of Cr(VI) originates from its structures and aqua chemistry.…”

Section: Introductionmentioning

confidence: 99%

“…Polymer-transition metal complexes having nitrogen donor centre, are gaining importance now-a-days due to their potential application in ion conduction (22)(23)(24), catalysis (25,26), bio-molecule separation (27) and ion exchange chromatography (9,10). Transition metal salts typically increase the glass transition temperature of polymers that contain an active ligand in the side group.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Selective Solid Phase Extraction of Chromium(VI) using Silica Gel Immobilized 4-vinyl Pyridine/Cupric Ion Complex

Mondal

Bayen

Roy

et al. 2012

Separation Science and Technology

Self Cite

View full text Add to dashboard Cite

Immobilization of 4-vinyl pyridine (4-VP) onto silica gel (SG) and its coordination with cupric ion (SG-4-VP!Cu 2þ ) leading to a new solid phase extractor has been carried out by a simple chemical technique. Immobilization and coordination reactions are characterized by chemical, FTIR, UV, and thermo-gravimetric analysis. The role of cupric ion on Cr(VI) binding capacity of the synthesized organic-inorganic hybrid material has been elucidated. The silica gel immobilized 4-VP/Cu 2þ complex (hybrid material) is tested for selective extraction and pre-concentration of Cr(VI) from aqueous solution. The Cr(VI) binding behavior of the synthesized material is studied at different pH, time, and temperature of the medium in both competitive and non-competitive conditions.

show abstract

Synthesis of polypyrrole nanoparticles and its grafting with silica gel for selective binding of chromium(VI)

Cited by 25 publications

References 23 publications

Synthesis and characterization of nanocomposite based on polymer as a highly effective supported catalyst in oxidation of alkenes

Synthesis and characterization of nanocomposite based on polymer as a highly effective supported catalyst in oxidation of alkenes

Controllable preparation and heavy‐metal‐ion adsorption of lignosulfonate‐polypyrrole composite nanosorbent

Selective Solid Phase Extraction of Chromium(VI) using Silica Gel Immobilized 4-vinyl Pyridine/Cupric Ion Complex

Contact Info

Product

Resources

About