A Pd/MnO<sub>2</sub> Electrocatalyst for Nitrogen Reduction to Ammonia under Ambient Conditions
Electrochemical ammonia synthesis, which is an alternative approach to the Haber–Bosch process, has attracted the attention of researchers because of its advantages including mild working conditions, environmental protection, and simple process. However, the biggest problem in this field is the lack...
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MDPI AG
2020-07-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/10/7/802 |
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| author | Chang Sun Yingxin Mu Yuxin Wang |
| author_facet | Chang Sun Yingxin Mu Yuxin Wang |
| author_sort | Chang Sun |
| collection | DOAJ |
| description | Electrochemical ammonia synthesis, which is an alternative approach to the Haber–Bosch process, has attracted the attention of researchers because of its advantages including mild working conditions, environmental protection, and simple process. However, the biggest problem in this field is the lack of high-performance catalysts. Here, we report high-efficiency electroreduction of N<sub>2</sub> to NH<sub>3</sub> on γ-MnO<sub>2</sub>-supported Pd nanoparticles (Pd/γ-MnO<sub>2</sub>) under ambient conditions, which exhibits excellent catalytic activity with an NH<sub>3</sub> yield rate of 19.72 μg·mg<sup>−1</sup><sub>Pd</sub> h<sup>−1</sup> and a Faradaic efficiency of 8.4% at −0.05 V vs. the reversible hydrogen electrode (RHE). X-ray diffraction (XRD) and transmission electron microscopy (TEM) characterization shows that Pd nanoparticles are homogeneously dispersed on the γ-MnO<sub>2</sub>. Pd/γ-MnO<sub>2</sub> outperforms other catalysts including Pd/C and γ-MnO<sub>2</sub> because of its synergistic catalytic effect between Pd and Mn. |
| first_indexed | 2024-03-10T18:23:07Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T18:23:07Z |
| publishDate | 2020-07-01 |
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| spelling | doaj.art-cecb9ceeb50746b4aa8ba285039437012023-11-20T07:14:21ZengMDPI AGCatalysts2073-43442020-07-0110780210.3390/catal10070802A Pd/MnO<sub>2</sub> Electrocatalyst for Nitrogen Reduction to Ammonia under Ambient ConditionsChang Sun0Yingxin Mu1Yuxin Wang2State Key Laboratory of Chemical Engineering, School of Chemical Engineering, Tianjin University, Tianjin 300350, ChinaState Key Laboratory of Chemical Engineering, School of Chemical Engineering, Tianjin University, Tianjin 300350, ChinaState Key Laboratory of Chemical Engineering, School of Chemical Engineering, Tianjin University, Tianjin 300350, ChinaElectrochemical ammonia synthesis, which is an alternative approach to the Haber–Bosch process, has attracted the attention of researchers because of its advantages including mild working conditions, environmental protection, and simple process. However, the biggest problem in this field is the lack of high-performance catalysts. Here, we report high-efficiency electroreduction of N<sub>2</sub> to NH<sub>3</sub> on γ-MnO<sub>2</sub>-supported Pd nanoparticles (Pd/γ-MnO<sub>2</sub>) under ambient conditions, which exhibits excellent catalytic activity with an NH<sub>3</sub> yield rate of 19.72 μg·mg<sup>−1</sup><sub>Pd</sub> h<sup>−1</sup> and a Faradaic efficiency of 8.4% at −0.05 V vs. the reversible hydrogen electrode (RHE). X-ray diffraction (XRD) and transmission electron microscopy (TEM) characterization shows that Pd nanoparticles are homogeneously dispersed on the γ-MnO<sub>2</sub>. Pd/γ-MnO<sub>2</sub> outperforms other catalysts including Pd/C and γ-MnO<sub>2</sub> because of its synergistic catalytic effect between Pd and Mn.https://www.mdpi.com/2073-4344/10/7/802electrochemical synthesis of ammoniapalladiumambient conditionsMnO<sub>2</sub>synergistic catalytic |
| spellingShingle | Chang Sun Yingxin Mu Yuxin Wang A Pd/MnO<sub>2</sub> Electrocatalyst for Nitrogen Reduction to Ammonia under Ambient Conditions Catalysts electrochemical synthesis of ammonia palladium ambient conditions MnO<sub>2</sub> synergistic catalytic |
| title | A Pd/MnO<sub>2</sub> Electrocatalyst for Nitrogen Reduction to Ammonia under Ambient Conditions |
| title_full | A Pd/MnO<sub>2</sub> Electrocatalyst for Nitrogen Reduction to Ammonia under Ambient Conditions |
| title_fullStr | A Pd/MnO<sub>2</sub> Electrocatalyst for Nitrogen Reduction to Ammonia under Ambient Conditions |
| title_full_unstemmed | A Pd/MnO<sub>2</sub> Electrocatalyst for Nitrogen Reduction to Ammonia under Ambient Conditions |
| title_short | A Pd/MnO<sub>2</sub> Electrocatalyst for Nitrogen Reduction to Ammonia under Ambient Conditions |
| title_sort | pd mno sub 2 sub electrocatalyst for nitrogen reduction to ammonia under ambient conditions |
| topic | electrochemical synthesis of ammonia palladium ambient conditions MnO<sub>2</sub> synergistic catalytic |
| url | https://www.mdpi.com/2073-4344/10/7/802 |
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