Highly porous Ce-W-TiO2 free-standing electrospun catalytic membranes for efficient de-NOx via ammonia selective catalytic reduction

Apiwat Dankeaw, Fabrizio Gualandris, Rafael Hubert Silva, Roberto Scipioni, Kent Kammer Hansen, Bussarin Ksapabutr, Vincenzo Esposito, Debora Marani*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Highly porous Ce-W-TiO2 free-standing nanofibrous membranes (FSM) are fabricated via electrospinning techniques to serve as NOx-SCR catalysts. The precursor of the ceramic nanofibers (sol-gel solution) is co-electrospun with a poly(vinyl alcohol) (PVA) water solution. PVA integration into FSM is proven to avoid excessive bending of the nanofibers, and to prevent mechanical failure of the final ceramic nanofibrous structure. This is demonstrated to be associated with PVA higher thermal stability compared with the other organic additives. 3D tomography reconstruction indicates a resulting ceramic membrane with a great open and interconnected porosity of ca. 96%. The catalytic characterization, performed at the best working conditions (in absence of H2O and SO2), indicates the amorphous FSM as the best performing catalytic membrane. Superior catalytic performances for the developed FSM, over the nanofibers and the nanoparticles catalysts are proven, as a result of superior surface, morphological, and structural features. Long-term stability (120 h) and reproducibility (over 5 cycles) of the FSM are also demonstrated.
Original languageEnglish
JournalEnvironmental Science: Nano
Volume6
Issue number1
Pages (from-to)94-104
ISSN2051-8153
DOIs
Publication statusPublished - 2019

Cite this

Dankeaw, Apiwat ; Gualandris, Fabrizio ; Silva, Rafael Hubert ; Scipioni, Roberto ; Kammer Hansen, Kent ; Ksapabutr, Bussarin ; Esposito, Vincenzo ; Marani, Debora. / Highly porous Ce-W-TiO2 free-standing electrospun catalytic membranes for efficient de-NOx via ammonia selective catalytic reduction. In: Environmental Science: Nano. 2019 ; Vol. 6, No. 1. pp. 94-104.
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title = "Highly porous Ce-W-TiO2 free-standing electrospun catalytic membranes for efficient de-NOx via ammonia selective catalytic reduction",
abstract = "Highly porous Ce-W-TiO2 free-standing nanofibrous membranes (FSM) are fabricated via electrospinning techniques to serve as NOx-SCR catalysts. The precursor of the ceramic nanofibers (sol-gel solution) is co-electrospun with a poly(vinyl alcohol) (PVA) water solution. PVA integration into FSM is proven to avoid excessive bending of the nanofibers, and to prevent mechanical failure of the final ceramic nanofibrous structure. This is demonstrated to be associated with PVA higher thermal stability compared with the other organic additives. 3D tomography reconstruction indicates a resulting ceramic membrane with a great open and interconnected porosity of ca. 96{\%}. The catalytic characterization, performed at the best working conditions (in absence of H2O and SO2), indicates the amorphous FSM as the best performing catalytic membrane. Superior catalytic performances for the developed FSM, over the nanofibers and the nanoparticles catalysts are proven, as a result of superior surface, morphological, and structural features. Long-term stability (120 h) and reproducibility (over 5 cycles) of the FSM are also demonstrated.",
author = "Apiwat Dankeaw and Fabrizio Gualandris and Silva, {Rafael Hubert} and Roberto Scipioni and {Kammer Hansen}, Kent and Bussarin Ksapabutr and Vincenzo Esposito and Debora Marani",
year = "2019",
doi = "10.1039/c8en01046c",
language = "English",
volume = "6",
pages = "94--104",
journal = "Environmental Science: Nano",
issn = "2051-8153",
publisher = "RSC Publications",
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}

Highly porous Ce-W-TiO2 free-standing electrospun catalytic membranes for efficient de-NOx via ammonia selective catalytic reduction. / Dankeaw, Apiwat; Gualandris, Fabrizio; Silva, Rafael Hubert ; Scipioni, Roberto ; Kammer Hansen, Kent; Ksapabutr, Bussarin ; Esposito, Vincenzo; Marani, Debora.

In: Environmental Science: Nano, Vol. 6, No. 1, 2019, p. 94-104.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Highly porous Ce-W-TiO2 free-standing electrospun catalytic membranes for efficient de-NOx via ammonia selective catalytic reduction

AU - Dankeaw, Apiwat

AU - Gualandris, Fabrizio

AU - Silva, Rafael Hubert

AU - Scipioni, Roberto

AU - Kammer Hansen, Kent

AU - Ksapabutr, Bussarin

AU - Esposito, Vincenzo

AU - Marani, Debora

PY - 2019

Y1 - 2019

N2 - Highly porous Ce-W-TiO2 free-standing nanofibrous membranes (FSM) are fabricated via electrospinning techniques to serve as NOx-SCR catalysts. The precursor of the ceramic nanofibers (sol-gel solution) is co-electrospun with a poly(vinyl alcohol) (PVA) water solution. PVA integration into FSM is proven to avoid excessive bending of the nanofibers, and to prevent mechanical failure of the final ceramic nanofibrous structure. This is demonstrated to be associated with PVA higher thermal stability compared with the other organic additives. 3D tomography reconstruction indicates a resulting ceramic membrane with a great open and interconnected porosity of ca. 96%. The catalytic characterization, performed at the best working conditions (in absence of H2O and SO2), indicates the amorphous FSM as the best performing catalytic membrane. Superior catalytic performances for the developed FSM, over the nanofibers and the nanoparticles catalysts are proven, as a result of superior surface, morphological, and structural features. Long-term stability (120 h) and reproducibility (over 5 cycles) of the FSM are also demonstrated.

AB - Highly porous Ce-W-TiO2 free-standing nanofibrous membranes (FSM) are fabricated via electrospinning techniques to serve as NOx-SCR catalysts. The precursor of the ceramic nanofibers (sol-gel solution) is co-electrospun with a poly(vinyl alcohol) (PVA) water solution. PVA integration into FSM is proven to avoid excessive bending of the nanofibers, and to prevent mechanical failure of the final ceramic nanofibrous structure. This is demonstrated to be associated with PVA higher thermal stability compared with the other organic additives. 3D tomography reconstruction indicates a resulting ceramic membrane with a great open and interconnected porosity of ca. 96%. The catalytic characterization, performed at the best working conditions (in absence of H2O and SO2), indicates the amorphous FSM as the best performing catalytic membrane. Superior catalytic performances for the developed FSM, over the nanofibers and the nanoparticles catalysts are proven, as a result of superior surface, morphological, and structural features. Long-term stability (120 h) and reproducibility (over 5 cycles) of the FSM are also demonstrated.

U2 - 10.1039/c8en01046c

DO - 10.1039/c8en01046c

M3 - Journal article

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SP - 94

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JO - Environmental Science: Nano

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