Niobium Modification of Au/CeO<sub>2</sub> for Enhanced Catalytic Performance over Benzene Combustion
A novel Au/Nb-CeO<sub>2</sub> was obtained by loading Au to Nb-modified CeO<sub>2</sub> adopting a thermal decomposition method. The modification effect of Nb on the physicochemical properties and performance of Au/CeO<sub>2</sub> for benzene combustion was system...
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MDPI AG
2021-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/1/189 |
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| author | Zhe Liu Xiaolan Zhang Ting Cai Jing Yuan Kunfeng Zhao Wenquan Lu Dannong He |
| author_facet | Zhe Liu Xiaolan Zhang Ting Cai Jing Yuan Kunfeng Zhao Wenquan Lu Dannong He |
| author_sort | Zhe Liu |
| collection | DOAJ |
| description | A novel Au/Nb-CeO<sub>2</sub> was obtained by loading Au to Nb-modified CeO<sub>2</sub> adopting a thermal decomposition method. The modification effect of Nb on the physicochemical properties and performance of Au/CeO<sub>2</sub> for benzene combustion was systematically clarified. The incorporated Nb species are found to be present in the two forms of highly-dispersed state and bulk NbO<i><sub>x</sub></i> into CeO<sub>2</sub> lattice in the obtained Au/Nb-CeO<sub>2</sub> catalyst. They greatly enlarged the BET surface area, improved the redox property, and strengthened the Au–support interaction. The addition of Nb also promotes catalytic performance of Au/CeO<sub>2</sub>, especially high-temperature performance: <i>T</i><sub>90%</sub> decreases by ca. 40 °C and Au/Nb-CeO<sub>2</sub> exhibits superior stability to Au/CeO<sub>2</sub> at 230 °C. The slightly improved Au dispersion and redox properties resulted in the small increase on initial activity of Au/Nb-CeO<sub>2</sub>, but the large BET surface area and the strong Au–support interaction greatly promoted the high-temperature performance improvement of Au/Nb-CeO<sub>2</sub> for benzene combustion reaction. |
| first_indexed | 2024-03-09T04:54:38Z |
| format | Article |
| id | doaj.art-ecd9f050587d4a1eafbc2d74fa68ec66 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T04:54:38Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-ecd9f050587d4a1eafbc2d74fa68ec662023-12-03T13:08:01ZengMDPI AGNanomaterials2079-49912021-01-0111118910.3390/nano11010189Niobium Modification of Au/CeO<sub>2</sub> for Enhanced Catalytic Performance over Benzene CombustionZhe Liu0Xiaolan Zhang1Ting Cai2Jing Yuan3Kunfeng Zhao4Wenquan Lu5Dannong He6School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaSchool of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaSchool of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaNational Engineering Research Center for Nanotechnology, Shanghai 200241, ChinaSchool of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaSchool of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaNational Engineering Research Center for Nanotechnology, Shanghai 200241, ChinaA novel Au/Nb-CeO<sub>2</sub> was obtained by loading Au to Nb-modified CeO<sub>2</sub> adopting a thermal decomposition method. The modification effect of Nb on the physicochemical properties and performance of Au/CeO<sub>2</sub> for benzene combustion was systematically clarified. The incorporated Nb species are found to be present in the two forms of highly-dispersed state and bulk NbO<i><sub>x</sub></i> into CeO<sub>2</sub> lattice in the obtained Au/Nb-CeO<sub>2</sub> catalyst. They greatly enlarged the BET surface area, improved the redox property, and strengthened the Au–support interaction. The addition of Nb also promotes catalytic performance of Au/CeO<sub>2</sub>, especially high-temperature performance: <i>T</i><sub>90%</sub> decreases by ca. 40 °C and Au/Nb-CeO<sub>2</sub> exhibits superior stability to Au/CeO<sub>2</sub> at 230 °C. The slightly improved Au dispersion and redox properties resulted in the small increase on initial activity of Au/Nb-CeO<sub>2</sub>, but the large BET surface area and the strong Au–support interaction greatly promoted the high-temperature performance improvement of Au/Nb-CeO<sub>2</sub> for benzene combustion reaction.https://www.mdpi.com/2079-4991/11/1/189niobium modificationAu/Nb-CeO<sub>2</sub>benzenecatalytic combustion |
| spellingShingle | Zhe Liu Xiaolan Zhang Ting Cai Jing Yuan Kunfeng Zhao Wenquan Lu Dannong He Niobium Modification of Au/CeO<sub>2</sub> for Enhanced Catalytic Performance over Benzene Combustion Nanomaterials niobium modification Au/Nb-CeO<sub>2</sub> benzene catalytic combustion |
| title | Niobium Modification of Au/CeO<sub>2</sub> for Enhanced Catalytic Performance over Benzene Combustion |
| title_full | Niobium Modification of Au/CeO<sub>2</sub> for Enhanced Catalytic Performance over Benzene Combustion |
| title_fullStr | Niobium Modification of Au/CeO<sub>2</sub> for Enhanced Catalytic Performance over Benzene Combustion |
| title_full_unstemmed | Niobium Modification of Au/CeO<sub>2</sub> for Enhanced Catalytic Performance over Benzene Combustion |
| title_short | Niobium Modification of Au/CeO<sub>2</sub> for Enhanced Catalytic Performance over Benzene Combustion |
| title_sort | niobium modification of au ceo sub 2 sub for enhanced catalytic performance over benzene combustion |
| topic | niobium modification Au/Nb-CeO<sub>2</sub> benzene catalytic combustion |
| url | https://www.mdpi.com/2079-4991/11/1/189 |
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