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Wang G, Chen Q, Zhang J, An X, Liu Q, Xie L, Yao W, Sun X, Kong Q. Ru doped NiMoO 4 nanoarray as a high-efficiency electrocatalyst for nitrite reduction to ammonia. J Colloid Interface Sci 2024; 661:401-408. [PMID: 38306749 DOI: 10.1016/j.jcis.2024.01.195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/08/2024] [Accepted: 01/27/2024] [Indexed: 02/04/2024]
Abstract
The electrocatalytic reduction of nitrite to recyclable ammonia (NH3) is essential to maintain nitrogen balance and meet growing energy requirements. Herein, we report that Ru doped honeycomb NiMoO4 nanosheet with copious oxygen vacancies grown on nickel foam substrate has been prepared by a facile hydrothermal synthesis and immersion process, which can act as an efficient electrocatalyst for NH3 synthesis by reduction of nitrite. By optimizing the concentration of RuCl3 solution, 0.01Ru-NiMoO4/NF possesses excellent NO2-RR performance with NH3 yield of 20249.17 ± 637.42 μg h-1 cm-2 at -0.7 V and FE of 95.56 ± 0.72 % at -0.6 V. When assembled into a Zn-NO2- battery, it provides a remarkable level of power density of 13.89 mW cm-2, outperforming the performance of virtually all previous reports. The efficient adsorption and activation of NO2- over Ru-doped NiMoO4 with oxygen vacancy have been verified by density functional theory calculations, as well as the possible reaction pathway.
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Affiliation(s)
- Guoguo Wang
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, China
| | - Qiuyue Chen
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, China
| | - Jing Zhang
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, China; Interdisciplinary Materials Research Center, Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China
| | - Xuguan An
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, China; Interdisciplinary Materials Research Center, Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China.
| | - Qian Liu
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, China; Interdisciplinary Materials Research Center, Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China
| | - Lisi Xie
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, China; Interdisciplinary Materials Research Center, Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China
| | - Weitang Yao
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, China; Interdisciplinary Materials Research Center, Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China
| | - Xuping Sun
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China; College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China.
| | - Qingquan Kong
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, China; Interdisciplinary Materials Research Center, Institute for Advanced Study, Chengdu University, Chengdu 610106, Sichuan, China.
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Xiang J, Zhao H, Chen K, Yang X, Chu K. Electrocatalytic nitrite reduction to ammonia on an Rh single-atom catalyst. J Colloid Interface Sci 2024; 659:432-438. [PMID: 38183809 DOI: 10.1016/j.jcis.2024.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/26/2023] [Accepted: 01/03/2024] [Indexed: 01/08/2024]
Abstract
Electrocatalytic NO2- reduction to NH3 (NO2RR) holds great promise as a green method for high-efficiency NH3 production. Herein, an Rh single-atom catalyst where isolated Rh supported on defective BN nanosheets (Rh1/BN) is reported to exhibit the exceptional NO2RR activity and selectivity. Extensive experimental and theoretical studies unveil that the high NO2RR performance of Rh1/BN arises from the single-atom Rh sites, which not only promote the activation and hydrogenation of NO2--to-NH3 process, but also hamper the undesired hydrogen evolution. Consequently, Rh1/BN assembled in a flow cell exhibits the highest NH3 yield rate of 2165.4 μmol h-1 cm-2 and FENH3 of 97.83 % at a high current density of 355.7 mA cm-2, ranking it the most efficient catalysts for NO2--to-NH3 conversion.
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Affiliation(s)
- Jiaqi Xiang
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Hongyan Zhao
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Kai Chen
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Xing Yang
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
| | - Ke Chu
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
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Zhang R, Shang S, Wang F, Chu K. Electrocatalytic reduction of nitrite to ammonia on undercoordinated Cu. Dalton Trans 2024; 53:3470-3475. [PMID: 38323778 DOI: 10.1039/d4dt00043a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Electrocatalytic NO2--to-NH3 reduction (NO2RR) has emerged as an intriguing route for simultaneous mitigation of harmful nitrites and production of valuable NH3. Herein, we design for the first time undercoordinated Cu nanowires (u-Cu) as an efficient and selective NO2RR electrocatalyst, delivering the maximum NO2--to-NH3 faradaic efficiency of 94.7% and an ammonia production rate of 494.5 μmol h-1 cm-2 at -0.7 V vs. RHE. Theoretical calculations reveal that the created undercoordinated Cu sites on u-Cu can enhance NO2- adsorption, boost NO2--to-NH3 energetics and restrict competitive hydrogen evolution, thereby enabling the active and selective NO2RR.
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Affiliation(s)
- Ruichao Zhang
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
| | - Shiyao Shang
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
| | - Fuzhou Wang
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
| | - Ke Chu
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
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Wu T, Zhang F, Wang J, Liu X, Tian Y, Chu K. Electrochemical reduction of nitrite to ammonia on amorphous MoO 3 nanosheets. Dalton Trans 2024; 53:877-881. [PMID: 38131476 DOI: 10.1039/d3dt03808d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Electrocatalytic NO2- reduction to NH3 (NO2RR) is an appealing approach for mitigating NO2- pollution and for the synthesis of valuable NH3, and so the exploration for high-performance NO2RR catalysts is pivotal yet remains challenging. Herein, amorphous MoO3 nanosheets (am-MoO3) were designed as a high-performance NO2RR electrocatalyst, delivering a maximum NO2--to-NH3 faradaic efficiency of 94.8% and NH3 yield rate of 480.4 μmol h-1 cm-2 at -0.6 V vs. RHE. Theoretical computations revealed that the largely enhanced NO2RR activity of am-MoO3 originated from the amorphization-induced O-vacancies, which could enhance the NO2--to-NH3 reaction energetics and hamper the competitive hydrogen evolution.
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Affiliation(s)
- Tingting Wu
- College of Science, Hebei North University, Zhangjiakou 075000, Hebei, China.
| | - Fengyu Zhang
- College of Science, Hebei North University, Zhangjiakou 075000, Hebei, China.
| | - Jingxuan Wang
- College of Science, Hebei North University, Zhangjiakou 075000, Hebei, China.
| | - Xiaoxu Liu
- College of Science, Hebei North University, Zhangjiakou 075000, Hebei, China.
| | - Ye Tian
- College of Science, Hebei North University, Zhangjiakou 075000, Hebei, China.
| | - Ke Chu
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.
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Liu B, Yu Y, Zhang G, Chu K. An Amorphization-Engineered Catalyst for Electrocatalytic Reduction of Nitric Oxide to Ammonia. Inorg Chem 2023; 62:20923-20928. [PMID: 38059925 DOI: 10.1021/acs.inorgchem.3c03986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Electrocatalytic NO-to-NH3 conversion (NORR) provides a fascinating route toward the eco-friendly and valuable production of NH3. In this study, amorphous FeS2 (a-FeS2) is first demonstrated as a high-efficiency catalyst for the NORR, showing a maximum FENH3 of 92.5% with a corresponding NH3 yield rate of 227.1 μmol h-1 cm-2, outperforming most NORR catalysts reported earlier. Experimental measurements combined with theoretical computations clarify that the exceptional NORR activity of a-FeS2 originates from the amorphization-induced upshift of the d-band center to promote the NO activation and NO-to-NH3 hydrogenation energetics.
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Affiliation(s)
- Baixing Liu
- School of Bailie Mechanical Engineering, Lanzhou City University, Lanzhou 730070, China
| | - Youjun Yu
- School of Bailie Mechanical Engineering, Lanzhou City University, Lanzhou 730070, China
| | - Guike Zhang
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
| | - Ke Chu
- School of Materials Science and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
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