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Solution combustion derived oxygen vacancy-rich Co(3)O(4) catalysts for catalytic formaldehyde oxidation at room temperature
Fabricating abundant oxygen vacancies is crucial for non-noble metal oxides to catalyze formaldehyde (HCHO) oxidation at room temperature. Here, a simple one-pot preparation method via solution combustion was found to produce oxygen vacancy-rich Co(3)O(4) catalysts, avoiding delicate defect engineer...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8961794/ https://www.ncbi.nlm.nih.gov/pubmed/35424938 http://dx.doi.org/10.1039/d2ra00783e |
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author | Mu, Baolin Zhang, Xianjuan Zhang, Yexin Lu, Peng Hao, Jianying Zhang, Jian |
author_facet | Mu, Baolin Zhang, Xianjuan Zhang, Yexin Lu, Peng Hao, Jianying Zhang, Jian |
author_sort | Mu, Baolin |
collection | PubMed |
description | Fabricating abundant oxygen vacancies is crucial for non-noble metal oxides to catalyze formaldehyde (HCHO) oxidation at room temperature. Here, a simple one-pot preparation method via solution combustion was found to produce oxygen vacancy-rich Co(3)O(4) catalysts, avoiding delicate defect engineering. The catalyst was evaluated to result in 52% HCHO conversion in a dynamic flow reaction with ∼6 ppm HCHO, which was higher as compared to some other Co(3)O(4) catalysts prepared in three methods of sol–gel, deposition precipitation and thermal decomposition. The optimal catalyst also exhibited high durability with steady HCHO conversion (∼47%) for more than 50 h. The catalyst characterizations revealed that the explosive solution combustion brought out two particular features of Co(3)O(4), namely, the porous network structure with nano-holes and the abundant oxygen vacancies. The latter was demonstrated to increase the reactive oxygen species and to improve the reducibility and the oxygen transport capacity of Co(3)O(4). The two features and the derived properties are beneficial to the activity and durability of Co(3)O(4). The solution combustion method can serve as a simple and feasible way to fabricate abundant oxygen vacancies to provide room-temperature activity of Co(3)O(4) for HCHO elimination at room temperature. |
format | Online Article Text |
id | pubmed-8961794 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-89617942022-04-13 Solution combustion derived oxygen vacancy-rich Co(3)O(4) catalysts for catalytic formaldehyde oxidation at room temperature Mu, Baolin Zhang, Xianjuan Zhang, Yexin Lu, Peng Hao, Jianying Zhang, Jian RSC Adv Chemistry Fabricating abundant oxygen vacancies is crucial for non-noble metal oxides to catalyze formaldehyde (HCHO) oxidation at room temperature. Here, a simple one-pot preparation method via solution combustion was found to produce oxygen vacancy-rich Co(3)O(4) catalysts, avoiding delicate defect engineering. The catalyst was evaluated to result in 52% HCHO conversion in a dynamic flow reaction with ∼6 ppm HCHO, which was higher as compared to some other Co(3)O(4) catalysts prepared in three methods of sol–gel, deposition precipitation and thermal decomposition. The optimal catalyst also exhibited high durability with steady HCHO conversion (∼47%) for more than 50 h. The catalyst characterizations revealed that the explosive solution combustion brought out two particular features of Co(3)O(4), namely, the porous network structure with nano-holes and the abundant oxygen vacancies. The latter was demonstrated to increase the reactive oxygen species and to improve the reducibility and the oxygen transport capacity of Co(3)O(4). The two features and the derived properties are beneficial to the activity and durability of Co(3)O(4). The solution combustion method can serve as a simple and feasible way to fabricate abundant oxygen vacancies to provide room-temperature activity of Co(3)O(4) for HCHO elimination at room temperature. The Royal Society of Chemistry 2022-03-29 /pmc/articles/PMC8961794/ /pubmed/35424938 http://dx.doi.org/10.1039/d2ra00783e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Mu, Baolin Zhang, Xianjuan Zhang, Yexin Lu, Peng Hao, Jianying Zhang, Jian Solution combustion derived oxygen vacancy-rich Co(3)O(4) catalysts for catalytic formaldehyde oxidation at room temperature |
title | Solution combustion derived oxygen vacancy-rich Co(3)O(4) catalysts for catalytic formaldehyde oxidation at room temperature |
title_full | Solution combustion derived oxygen vacancy-rich Co(3)O(4) catalysts for catalytic formaldehyde oxidation at room temperature |
title_fullStr | Solution combustion derived oxygen vacancy-rich Co(3)O(4) catalysts for catalytic formaldehyde oxidation at room temperature |
title_full_unstemmed | Solution combustion derived oxygen vacancy-rich Co(3)O(4) catalysts for catalytic formaldehyde oxidation at room temperature |
title_short | Solution combustion derived oxygen vacancy-rich Co(3)O(4) catalysts for catalytic formaldehyde oxidation at room temperature |
title_sort | solution combustion derived oxygen vacancy-rich co(3)o(4) catalysts for catalytic formaldehyde oxidation at room temperature |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8961794/ https://www.ncbi.nlm.nih.gov/pubmed/35424938 http://dx.doi.org/10.1039/d2ra00783e |
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