Nb-doped NiO nanoflowers for nitrite electroreduction to ammonia
Summary: Electrocatalytic reduction of nitrite to ammonia (NO2RR) is considered as an appealing route to simultaneously achieve sustainable ammonia production and abate hazardous nitrite pollution. Herein, atomically Nb-doped NiO nanoflowers are designed as a high-performance NO2RR catalyst, which e...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004223020217 |
| _version_ | 1797647811365306368 |
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| author | Ying Zhang Yuying Wan Xiaoxu Liu Kai Chen Ke Chu |
| author_facet | Ying Zhang Yuying Wan Xiaoxu Liu Kai Chen Ke Chu |
| author_sort | Ying Zhang |
| collection | DOAJ |
| description | Summary: Electrocatalytic reduction of nitrite to ammonia (NO2RR) is considered as an appealing route to simultaneously achieve sustainable ammonia production and abate hazardous nitrite pollution. Herein, atomically Nb-doped NiO nanoflowers are designed as a high-performance NO2RR catalyst, which exhibits the highest NH3-Faradaic efficiency of 92.4% with an NH3 yield rate of 200.5 μmol h−1 cm−2 at −0.6 V RHE. Theoretical calculations unravel that Nb dopants can act as Lewis acid sites to render effective NO2− activation, decreased protonation energy barriers, and restricted hydrogen evolution, ultimately leading to a high NO2RR selectivity and activity. |
| first_indexed | 2024-03-11T15:23:01Z |
| format | Article |
| id | doaj.art-3f22bf0f5ebf4652b193c8c5004715e7 |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-03-11T15:23:01Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-3f22bf0f5ebf4652b193c8c5004715e72023-10-28T05:09:04ZengElsevieriScience2589-00422023-10-012610107944Nb-doped NiO nanoflowers for nitrite electroreduction to ammoniaYing Zhang0Yuying Wan1Xiaoxu Liu2Kai Chen3Ke Chu4School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaSchool of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaCollege of Science, Hebei North University, Zhangjiakou, Hebei 075000, ChinaSchool of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaSchool of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; Corresponding authorSummary: Electrocatalytic reduction of nitrite to ammonia (NO2RR) is considered as an appealing route to simultaneously achieve sustainable ammonia production and abate hazardous nitrite pollution. Herein, atomically Nb-doped NiO nanoflowers are designed as a high-performance NO2RR catalyst, which exhibits the highest NH3-Faradaic efficiency of 92.4% with an NH3 yield rate of 200.5 μmol h−1 cm−2 at −0.6 V RHE. Theoretical calculations unravel that Nb dopants can act as Lewis acid sites to render effective NO2− activation, decreased protonation energy barriers, and restricted hydrogen evolution, ultimately leading to a high NO2RR selectivity and activity.http://www.sciencedirect.com/science/article/pii/S2589004223020217ElectrochemistryApplied chemistryEnergy materials |
| spellingShingle | Ying Zhang Yuying Wan Xiaoxu Liu Kai Chen Ke Chu Nb-doped NiO nanoflowers for nitrite electroreduction to ammonia iScience Electrochemistry Applied chemistry Energy materials |
| title | Nb-doped NiO nanoflowers for nitrite electroreduction to ammonia |
| title_full | Nb-doped NiO nanoflowers for nitrite electroreduction to ammonia |
| title_fullStr | Nb-doped NiO nanoflowers for nitrite electroreduction to ammonia |
| title_full_unstemmed | Nb-doped NiO nanoflowers for nitrite electroreduction to ammonia |
| title_short | Nb-doped NiO nanoflowers for nitrite electroreduction to ammonia |
| title_sort | nb doped nio nanoflowers for nitrite electroreduction to ammonia |
| topic | Electrochemistry Applied chemistry Energy materials |
| url | http://www.sciencedirect.com/science/article/pii/S2589004223020217 |
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