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Polymer-stabilized palladium nanoparticles for catalytic membranes: ad hoc polymer fabrication.

Domènech B, Muñoz M, Muraviev DN, Macanás J - Nanoscale Res Lett (2011)

Bottom Line: This paper reports the intermatrix synthesis of Pd0 nanoparticles in sulfonated polyethersulfone with Cardo group membranes and their use as nanocomposite catalytic membrane reactors.The synthesized polymer and the corresponding nanocomposite were characterized by spectroscopic and microscopic techniques.The catalytic efficiency of catalytic membranes was evaluated by following the reduction of p-nitrophenol in the presence of NaBH4.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Chemical Engineering, UPC, C/Colom, 1, 08222 Terrassa, Barcelona, Spain. Jorge.Macanas@upc.edu.

ABSTRACT
Metal nanoparticles are known as highly effective catalysts although their immobilization on solid supports is frequently required to prevent aggregation and to facilitate the catalyst application, recovery, and reuse. This paper reports the intermatrix synthesis of Pd0 nanoparticles in sulfonated polyethersulfone with Cardo group membranes and their use as nanocomposite catalytic membrane reactors. The synthesized polymer and the corresponding nanocomposite were characterized by spectroscopic and microscopic techniques. The catalytic efficiency of catalytic membranes was evaluated by following the reduction of p-nitrophenol in the presence of NaBH4.

No MeSH data available.


ATR-FTIR spectra of PES-C, SPES-C, and Pd0-NP-SPES-C (left). Partial spectra corresponding to 800 to 1,200 cm-1 interval (right).
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Figure 2: ATR-FTIR spectra of PES-C, SPES-C, and Pd0-NP-SPES-C (left). Partial spectra corresponding to 800 to 1,200 cm-1 interval (right).

Mentions: The ATR-FTIR-ATR spectra of both bare (PES-C) and sulfonated polymer (SPES-C) shown in Figure 2 have been used to follow the effectiveness of the sulfonation procedure. As it is clearly seen, spectra only differ by the peak at about 1,030 cm-1 assigned to symmetric S = O stretching due to the introduction of -SO3H groups into the polymer chains. This fact confirms that the rest of the polymer structure is not degraded in the course of sulfonation. As it is also seen in Figure 2, the ATR-FTIR spectrum of the Pd0-NMP containing nanocomposite also shows the same peak.


Polymer-stabilized palladium nanoparticles for catalytic membranes: ad hoc polymer fabrication.

Domènech B, Muñoz M, Muraviev DN, Macanás J - Nanoscale Res Lett (2011)

ATR-FTIR spectra of PES-C, SPES-C, and Pd0-NP-SPES-C (left). Partial spectra corresponding to 800 to 1,200 cm-1 interval (right).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211501&req=5

Figure 2: ATR-FTIR spectra of PES-C, SPES-C, and Pd0-NP-SPES-C (left). Partial spectra corresponding to 800 to 1,200 cm-1 interval (right).
Mentions: The ATR-FTIR-ATR spectra of both bare (PES-C) and sulfonated polymer (SPES-C) shown in Figure 2 have been used to follow the effectiveness of the sulfonation procedure. As it is clearly seen, spectra only differ by the peak at about 1,030 cm-1 assigned to symmetric S = O stretching due to the introduction of -SO3H groups into the polymer chains. This fact confirms that the rest of the polymer structure is not degraded in the course of sulfonation. As it is also seen in Figure 2, the ATR-FTIR spectrum of the Pd0-NMP containing nanocomposite also shows the same peak.

Bottom Line: This paper reports the intermatrix synthesis of Pd0 nanoparticles in sulfonated polyethersulfone with Cardo group membranes and their use as nanocomposite catalytic membrane reactors.The synthesized polymer and the corresponding nanocomposite were characterized by spectroscopic and microscopic techniques.The catalytic efficiency of catalytic membranes was evaluated by following the reduction of p-nitrophenol in the presence of NaBH4.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Chemical Engineering, UPC, C/Colom, 1, 08222 Terrassa, Barcelona, Spain. Jorge.Macanas@upc.edu.

ABSTRACT
Metal nanoparticles are known as highly effective catalysts although their immobilization on solid supports is frequently required to prevent aggregation and to facilitate the catalyst application, recovery, and reuse. This paper reports the intermatrix synthesis of Pd0 nanoparticles in sulfonated polyethersulfone with Cardo group membranes and their use as nanocomposite catalytic membrane reactors. The synthesized polymer and the corresponding nanocomposite were characterized by spectroscopic and microscopic techniques. The catalytic efficiency of catalytic membranes was evaluated by following the reduction of p-nitrophenol in the presence of NaBH4.

No MeSH data available.