Cargando…
N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3)
In this paper, CoFe(2)O(4)/graphene catalysts and N-doped graphene/CoFe(2)O(4) (CoFe(2)O(4)/graphene-(N)) catalysts were prepared using the hydrothermal crystallization method for the selective catalytic reduction of NO(x) by NH(3). The results of the test showed that CoFe(2)O(4)/graphene catalysts...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064319/ https://www.ncbi.nlm.nih.gov/pubmed/35521390 http://dx.doi.org/10.1039/c9ra02456e |
_version_ | 1784699347822182400 |
---|---|
author | Li, Peng Li, Zhifang Cui, Jinxing Geng, Cui Kang, Yan Zhang, Chao Yang, Changlong |
author_facet | Li, Peng Li, Zhifang Cui, Jinxing Geng, Cui Kang, Yan Zhang, Chao Yang, Changlong |
author_sort | Li, Peng |
collection | PubMed |
description | In this paper, CoFe(2)O(4)/graphene catalysts and N-doped graphene/CoFe(2)O(4) (CoFe(2)O(4)/graphene-(N)) catalysts were prepared using the hydrothermal crystallization method for the selective catalytic reduction of NO(x) by NH(3). The results of the test showed that CoFe(2)O(4)/graphene catalysts exhibited the best denitrification activity when the loading was at 4% and the conversion rate of NO(x) reached 99% at 250–300 °C. CoFe(2)O(4)/graphene-(N) catalysts presented a better denitrification activity at low temperature than CoFe(2)O(4)/graphene catalysts, and the conversion rate of NO(x) reached more than 95% at 200–300 °C. The intrinsic mechanism of CoFe(2)O(4)/graphene-(N) catalysts in promoting SCR activity was preliminarily explored. The physicochemical properties of the samples were characterized using XRD, TEM, N(2) adsorption, XPS, NH(3)-TPD, and H(2)-TPR. The results indicated that nitrogen doping can improve the dispersion of CoFe(2)O(4), and it also increased the acidic sites and the redox performance conducive to improving the denitrification activity of the catalysts. In addition, CoFe(2)O(4)/graphene-(N) catalysts demonstrated a better resistance to water and sulfur than CoFe(2)O(4)/graphene catalysts. |
format | Online Article Text |
id | pubmed-9064319 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90643192022-05-04 N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3) Li, Peng Li, Zhifang Cui, Jinxing Geng, Cui Kang, Yan Zhang, Chao Yang, Changlong RSC Adv Chemistry In this paper, CoFe(2)O(4)/graphene catalysts and N-doped graphene/CoFe(2)O(4) (CoFe(2)O(4)/graphene-(N)) catalysts were prepared using the hydrothermal crystallization method for the selective catalytic reduction of NO(x) by NH(3). The results of the test showed that CoFe(2)O(4)/graphene catalysts exhibited the best denitrification activity when the loading was at 4% and the conversion rate of NO(x) reached 99% at 250–300 °C. CoFe(2)O(4)/graphene-(N) catalysts presented a better denitrification activity at low temperature than CoFe(2)O(4)/graphene catalysts, and the conversion rate of NO(x) reached more than 95% at 200–300 °C. The intrinsic mechanism of CoFe(2)O(4)/graphene-(N) catalysts in promoting SCR activity was preliminarily explored. The physicochemical properties of the samples were characterized using XRD, TEM, N(2) adsorption, XPS, NH(3)-TPD, and H(2)-TPR. The results indicated that nitrogen doping can improve the dispersion of CoFe(2)O(4), and it also increased the acidic sites and the redox performance conducive to improving the denitrification activity of the catalysts. In addition, CoFe(2)O(4)/graphene-(N) catalysts demonstrated a better resistance to water and sulfur than CoFe(2)O(4)/graphene catalysts. The Royal Society of Chemistry 2019-05-21 /pmc/articles/PMC9064319/ /pubmed/35521390 http://dx.doi.org/10.1039/c9ra02456e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Li, Peng Li, Zhifang Cui, Jinxing Geng, Cui Kang, Yan Zhang, Chao Yang, Changlong N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3) |
title | N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3) |
title_full | N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3) |
title_fullStr | N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3) |
title_full_unstemmed | N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3) |
title_short | N-doped graphene/CoFe(2)O(4) catalysts for the selective catalytic reduction of NO(x) by NH(3) |
title_sort | n-doped graphene/cofe(2)o(4) catalysts for the selective catalytic reduction of no(x) by nh(3) |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064319/ https://www.ncbi.nlm.nih.gov/pubmed/35521390 http://dx.doi.org/10.1039/c9ra02456e |
work_keys_str_mv | AT lipeng ndopedgraphenecofe2o4catalystsfortheselectivecatalyticreductionofnoxbynh3 AT lizhifang ndopedgraphenecofe2o4catalystsfortheselectivecatalyticreductionofnoxbynh3 AT cuijinxing ndopedgraphenecofe2o4catalystsfortheselectivecatalyticreductionofnoxbynh3 AT gengcui ndopedgraphenecofe2o4catalystsfortheselectivecatalyticreductionofnoxbynh3 AT kangyan ndopedgraphenecofe2o4catalystsfortheselectivecatalyticreductionofnoxbynh3 AT zhangchao ndopedgraphenecofe2o4catalystsfortheselectivecatalyticreductionofnoxbynh3 AT yangchanglong ndopedgraphenecofe2o4catalystsfortheselectivecatalyticreductionofnoxbynh3 |