Trimetallic PdCuIr with long-spined sea-urchin-like morphology for ambient electroreduction of nitrogen to ammonia

Kumar, Rajaiah Dhilip; Wang, Ziqiang; Li, Chunjie; Kumar, Alam Venugopal Narendra; Xue, Hairong; Xu, You; Li, Xiaonian; Wang, Liang; Wang, Hongjing

doi:10.1039/c8ta10562f

Cited by 45 publications

(24 citation statements)

References 53 publications

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“…This rate of NH 3 decreases as expected at higher applied potentials due to the competing HER, which is kinetically faster than NRR. [28] Control experiments under open circuit potential in N 2 , and at À0.1 V in Ar confirmed that there is no interference from the applied gas impurity, environment, and the catalyst system itself. These control experiments results are corroborated well with both approaches, as shown in Figure 2 d,e.…”

Section: Methodsmentioning

confidence: 82%

Metal–Sulfur Linkages Achieved by Organic Tethering of Ruthenium Nanocrystals for Enhanced Electrochemical Nitrogen Reduction

et al. 2020

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Inspired by the metal–sulfur (M‐S) linkages in the nitrogenase enzyme, here we show a surface modification strategy to modulate the electronic structure and improve the N2 availability on a catalytic surface, which suppresses the hydrogen evolution reaction (HER) and improves the rate of NH3 production. Ruthenium nanocrystals anchored on reduced graphene oxide (Ru/rGO) are modified with different aliphatic thiols to achieve M‐S linkages. A high faradaic efficiency (11 %) with an improved NH3 yield (50 μg h−1 mg−1) is achieved at −0.1 V vs. RHE in acidic conditions by using dodecanethiol. DFT calculations reveal intermediate N2 adsorption and desorption of the product is achieved by electronic structure modification along with the suppression of the HER by surface modification. The modified catalyst shows excellent stability and recyclability for NH3 production, as confirmed by rigorous control experiments including 15N isotope labeling experiments.

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Section: Methodsmentioning

confidence: 82%

Metal–Sulfur Linkages Achieved by Organic Tethering of Ruthenium Nanocrystals for Enhanced Electrochemical Nitrogen Reduction

et al. 2020

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“…Similarly, Wang and co-workers fabricated trimetallic compound containing Ir, Pd, Cu (PdCuIr) as an NRR electrocatalyst. [188] It produced NH 3 . [189] The better performance was attributed to lowering of activation of energy and suppression of HER.…”

Section: Ir Compoundsmentioning

confidence: 99%

“…Similarly, Wang and co‐workers fabricated trimetallic compound containing Ir, Pd, Cu (PdCuIr) as an NRR electrocatalyst. [ 188 ] It produced NH 3 at 13.29 µg h −1 mg cat −1 rate with 5.29% efficiency. Though results are not as so high as expected, trimetallic idea would be enough to encourage others take up and extend the work by mixing other metals and optimize the performance.…”

Section: Transition Metals or Elementsmentioning

confidence: 99%

Exploration and Investigation of Periodic Elements for Electrocatalytic Nitrogen Reduction

Patil

Wang

2020

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“…Considerable reports have been discussed this problem from both theoretical and experimental aspects. For instance, long‐spine urchin‐like structure of PdCuIr (PdCuIr‐LS) was prepared by a facile one‐pot method [47] . PdCuIr‐LS exhibited excellent catalytic performance for NRR with NH 3 formation rates of 13.43 μg mg cat −1 h −1 and FEs of 5.29% in the neutral medium, due to its hyper‐branched structure and tri‐metallic composition effect.…”

Section: Nrr On Noble Metal (Viii) Catalystsmentioning

confidence: 99%

An Overview on Noble Metal (Group VIII)‐based Heterogeneous Electrocatalysts for Nitrogen Reduction Reaction

Chen

Zhang

Jin

et al. 2020

Chemistry An Asian Journal

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The typically the Haber‐Bosch process of nitrogen (N2) reduction to ammonia (NH3) production, expends a lot of energy, resulting in severe environmental issues. Electro‐catalytic N2 reduction to NH3 formation by renewable resources is one of the effective ways to settle the issue. However, the electro‐catalytic performances and selectivity of catalysts for electrochemical nitrogen reduction reaction (NRR) are very low. Therefore, it is of great significance to develop more efficient electro‐catalysts to satisfy the needs of practical use. Among the reported catalysts, those based on Group VIII noble metals heterogeneous catalysts display excellent NRR activities and high selectivity because of their good conductivity, rich active surface area, unfilled d‐orbitals, and the abilities with easy adsorption of reactants and stable reaction intermediates. Herein, we will introduce the progress of Group VIII precious metals heterogeneous catalysts applied in the electrocatalytic N2 reduction reaction. Then single precious metal electrocatalysts, precious metal alloy electrocatalysts, heterojunction structure electrocatalysts, and precious metal compounds based on the strategies of morphology engineering, crystal facet engineering, defect engineering, heteroatom doping, and synergetic interface engineering will be discussed. Finally, the challenges and prospects of the NH3 synthesis have been put forward. In the review, we will provide helpful direction to the development of effective electro‐catalysts for catalytic N2 reduction reaction.

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Trimetallic PdCuIr with long-spined sea-urchin-like morphology for ambient electroreduction of nitrogen to ammonia

Abstract: A one-step method is proposed to synthesize long-spined sea-urchin-like PdCuIr nanostructures for electrocatalytic nitrogen reduction to ammonia.

Cited by 45 publications

References 53 publications

Metal–Sulfur Linkages Achieved by Organic Tethering of Ruthenium Nanocrystals for Enhanced Electrochemical Nitrogen Reduction

Metal–Sulfur Linkages Achieved by Organic Tethering of Ruthenium Nanocrystals for Enhanced Electrochemical Nitrogen Reduction

Exploration and Investigation of Periodic Elements for Electrocatalytic Nitrogen Reduction

An Overview on Noble Metal (Group VIII)‐based Heterogeneous Electrocatalysts for Nitrogen Reduction Reaction

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