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LAPSE:2023.15044

Catalytic Removal of NOx on Ceramic Foam-Supported ZnO and TiO2 Nanorods Ornamented with W and V Oxides

Maciej Kapkowski, Tomasz Siudyga, Piotr Bartczak, Maciej Zubko, Rafal Sitko, Jacek Szade, Katarzyna Balin, Bartłomiej S. Witkowski, Monika Ożga, Rafał Pietruszka, Marek Godlewski, Jaroslaw Polanski

March 2, 2023

Abstract
Energy consumption steadily increases and energy production is associated with many environmental risks, e.g., generating the largest share of greenhouse gas emissions. The primary gas pollution concern is CO2, CH4, and nitrogen oxides (NOx). Environmental catalysis plays a pivotal role in NOx mitigation (DeNOx). This study investigated, for the first time, a collection of ceramic foams as potential catalyst support for selective catalytic NOx reduction (SCR). Ceramic foams could be an attractive support option for NOx removal. However, we should functionalize the surface of raw foams for such applications. A library of ceramic SiC, Al2O3, and ZrO2 foams ornamented with nanorod ZnO and TiO2 as W and V oxide support was obtained for the first time. We characterized the surface layer coating structure using the XPS, XRF and SEM, and TEM microscopy to optimize the W to V molar ratio and examine NO2 mitigation as the SCR model, which was tested only very rarely. Comparing TiO2 and ZnO systems reveals that the SCR conversion on ZnO appeared superior vs. the conversion on TiO2, while the SiC-supported catalysts were less efficient than Al2O3 and ZrO2-supported catalysts. The energy bands in optical spectra correlate with the observed activity rank.

Record ID

LAPSE:2023.15044

Keywords

ceramic foams, environmental nanocatalysis, NOx mitigation (deNOx), selective catalytic reduction SCR, TiO2 nanorods, W and V catalytic sites, ZnO nanorods

Subject

Materials

Suggested Citation

Kapkowski M, Siudyga T, Bartczak P, Zubko M, Sitko R, Szade J, Balin K, Witkowski BS, Ożga M, Pietruszka R, Godlewski M, Polanski J. Catalytic Removal of NOx on Ceramic Foam-Supported ZnO and TiO2 Nanorods Ornamented with W and V Oxides. (2023). LAPSE:2023.15044

Author Affiliations

Kapkowski M: Faculty of Science and Technology, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland [ORCID]
Siudyga T: Faculty of Science and Technology, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
Bartczak P: Faculty of Science and Technology, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland [ORCID]
Zubko M: Faculty of Science and Technology, Institute of Materials Engineering, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland; Department of Physics, University of Hradec Králové, Rokitanského 62, 500-03 Hradec Králové, Czech Republic [ORCID]
Sitko R: Faculty of Science and Technology, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland [ORCID]
Szade J: Faculty of Science and Technology, August Chełkowski Institute of Physics, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
Balin K: Faculty of Science and Technology, August Chełkowski Institute of Physics, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland [ORCID]
Witkowski BS: Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02668 Warsaw, Poland [ORCID]
Ożga M: Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02668 Warsaw, Poland [ORCID]
Pietruszka R: Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02668 Warsaw, Poland [ORCID]
Godlewski M: Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02668 Warsaw, Poland
Polanski J: Faculty of Science and Technology, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland [ORCID]

Journal Name

Energies

Volume

Issue

First Page

1798

Year

2022

Publication Date

2022-02-28

DOI:

https://doi.org/10.3390/en15051798