Highly Dispersed In‐Situ Grown Bi2O3 Nanosheets on Ti3C2Tx MXene for Selective Electroreduction of Nitrate to Ammonia
Abstract Nitrate, a common pollutant in water, can be used as a nitrogen source for electrocatalytic ammonia production. Bismuth oxide (Bi2O3) is a promising electrocatalyst because of earth‐abundance and high hydrogen overpotential. However, it also has the disadvantages of easy agglomeration and p...
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| Format: | Article |
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Wiley-VCH
2023-01-01
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| Series: | ChemElectroChem |
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| Online Access: | https://doi.org/10.1002/celc.202201001 |
| _version_ | 1797804262905872384 |
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| author | Hao‐Yu Zhang Lan‐Xin Li Dr. Wu‐Ji Sun Prof. Jing‐Hui He Prof. Qing‐Feng Xu Prof. Jian‐Mei Lu |
| author_facet | Hao‐Yu Zhang Lan‐Xin Li Dr. Wu‐Ji Sun Prof. Jing‐Hui He Prof. Qing‐Feng Xu Prof. Jian‐Mei Lu |
| author_sort | Hao‐Yu Zhang |
| collection | DOAJ |
| description | Abstract Nitrate, a common pollutant in water, can be used as a nitrogen source for electrocatalytic ammonia production. Bismuth oxide (Bi2O3) is a promising electrocatalyst because of earth‐abundance and high hydrogen overpotential. However, it also has the disadvantages of easy agglomeration and poor charge transfer. This study demonstrated that the high dispersion of Bi2O3 nanosheets can be achieved through in‐situ growth on Ti3C2Tx MXene nanosheets that improved the efficiency of charge transmission, and thus improving the electrocatalytic ammonia production performance. A NH3 yield rate of ∼7.00 mg h−1 cm−2 with faradic efficiency of 91.1 % could be achieved on 11 % Bi2O3/MXene. Density functional theory (DFT) calculations, electrochemical active surface area (ECSA) and electrochemical impedance spectroscopy (EIS) proved that the excellent ammonia production performance came from the fact that bismuth oxide itself could inhibit hydrogen evolution, and in situ growth on MXene enabled high active site exposure and enhanced charge transfer capacity. |
| first_indexed | 2024-03-13T05:33:31Z |
| format | Article |
| id | doaj.art-6e806f6185764f229aaad3105289e675 |
| institution | Directory Open Access Journal |
| issn | 2196-0216 |
| language | English |
| last_indexed | 2024-03-13T05:33:31Z |
| publishDate | 2023-01-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | ChemElectroChem |
| spelling | doaj.art-6e806f6185764f229aaad3105289e6752023-06-14T12:42:30ZengWiley-VCHChemElectroChem2196-02162023-01-01101n/an/a10.1002/celc.202201001Highly Dispersed In‐Situ Grown Bi2O3 Nanosheets on Ti3C2Tx MXene for Selective Electroreduction of Nitrate to AmmoniaHao‐Yu Zhang0Lan‐Xin Li1Dr. Wu‐Ji Sun2Prof. Jing‐Hui He3Prof. Qing‐Feng Xu4Prof. Jian‐Mei Lu5College of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215123 ChinaCollege of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215123 ChinaCollege of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215123 ChinaCollege of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215123 ChinaCollege of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215123 ChinaCollege of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou 215123 ChinaAbstract Nitrate, a common pollutant in water, can be used as a nitrogen source for electrocatalytic ammonia production. Bismuth oxide (Bi2O3) is a promising electrocatalyst because of earth‐abundance and high hydrogen overpotential. However, it also has the disadvantages of easy agglomeration and poor charge transfer. This study demonstrated that the high dispersion of Bi2O3 nanosheets can be achieved through in‐situ growth on Ti3C2Tx MXene nanosheets that improved the efficiency of charge transmission, and thus improving the electrocatalytic ammonia production performance. A NH3 yield rate of ∼7.00 mg h−1 cm−2 with faradic efficiency of 91.1 % could be achieved on 11 % Bi2O3/MXene. Density functional theory (DFT) calculations, electrochemical active surface area (ECSA) and electrochemical impedance spectroscopy (EIS) proved that the excellent ammonia production performance came from the fact that bismuth oxide itself could inhibit hydrogen evolution, and in situ growth on MXene enabled high active site exposure and enhanced charge transfer capacity.https://doi.org/10.1002/celc.202201001ammoniaBismuth oxideElectroreductionMxeneNitrate |
| spellingShingle | Hao‐Yu Zhang Lan‐Xin Li Dr. Wu‐Ji Sun Prof. Jing‐Hui He Prof. Qing‐Feng Xu Prof. Jian‐Mei Lu Highly Dispersed In‐Situ Grown Bi2O3 Nanosheets on Ti3C2Tx MXene for Selective Electroreduction of Nitrate to Ammonia ChemElectroChem ammonia Bismuth oxide Electroreduction Mxene Nitrate |
| title | Highly Dispersed In‐Situ Grown Bi2O3 Nanosheets on Ti3C2Tx MXene for Selective Electroreduction of Nitrate to Ammonia |
| title_full | Highly Dispersed In‐Situ Grown Bi2O3 Nanosheets on Ti3C2Tx MXene for Selective Electroreduction of Nitrate to Ammonia |
| title_fullStr | Highly Dispersed In‐Situ Grown Bi2O3 Nanosheets on Ti3C2Tx MXene for Selective Electroreduction of Nitrate to Ammonia |
| title_full_unstemmed | Highly Dispersed In‐Situ Grown Bi2O3 Nanosheets on Ti3C2Tx MXene for Selective Electroreduction of Nitrate to Ammonia |
| title_short | Highly Dispersed In‐Situ Grown Bi2O3 Nanosheets on Ti3C2Tx MXene for Selective Electroreduction of Nitrate to Ammonia |
| title_sort | highly dispersed in situ grown bi2o3 nanosheets on ti3c2tx mxene for selective electroreduction of nitrate to ammonia |
| topic | ammonia Bismuth oxide Electroreduction Mxene Nitrate |
| url | https://doi.org/10.1002/celc.202201001 |
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