Low temperature conversion of methane to syngas using lattice oxygen over NiO-MgO

Wang, Junbu; Huang, Zeai; Wang, Ying; Wu, Jundao; Rao, Zhiqiang; Fang, Wang; Zhou, Ying

doi:10.1016/j.cclet.2021.12.060

Cited by 11 publications

(3 citation statements)

References 45 publications

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“…[ 47,48 ] In addition, the peak in O 1s spectra in Figure S3c (Supporting Information) can be divided into two peaks that belong to hydroxyl species (O1, 531.5 eV) and chemisorbed water (O2, 532.6 eV). [ 49–51 ] It is obvious that the hydroxyl species are the most prevalent kind of oxygen, which supports the in situ introduction of Ni element even more. [ 52,53 ] These results confirm that a loading amount of active elements is present in Pd/NF.…”

Section: Resultsmentioning

confidence: 99%

Self‐Supported Pd Nanorod Arrays for High‐Efficient Nitrate Electroreduction to Ammonia

Yang

Luo

et al. 2023

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Electrochemical nitrate (NO3−) reduction to ammonia (NH3) offers a promising pathway to recover NO3− pollutants from industrial wastewater that can balance the nitrogen cycle and sustainable green NH3 production. However, the efficiency of electrocatalytic NO3− reduction to NH3 synthesis remains low for most of electrocatalysts due to complex reaction processes and severe hydrogen precipitation reaction. Herein, high performance of nitrate reduction reaction (NO3−RR) is demonstrated on self‐supported Pd nanorod arrays in porous nickel framework foam (Pd/NF). It provides a lot of active sites for H* adsorption and NO3− activation leading to a remarkable NH3 yield rate of 1.52 mmol cm−2 h−1 and a Faradaic efficiency of 78% at −1.4 V versus RHE. Notably, it maintains a high NH3 yield rate over 50 cycles in 25 h showing good stability. Remarkably, large‐area Pd/NF electrode (25 cm2) shows a NH3 yield of 174.25 mg h−1, be promising candidate for large‐area device for industrial application. In situ FTIR spectroscopy and density functional theory calculations analysis confirm that the enrichment effect of Pd nanorods encourages the adsorption of H species for ammonia synthesis following a hydrogenation mechanism. This work brings a useful strategy for designing NO3−RR catalysts of nanorod arrays with customizable compositions.

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Section: Resultsmentioning

confidence: 99%

Self‐Supported Pd Nanorod Arrays for High‐Efficient Nitrate Electroreduction to Ammonia

Yang

Luo

et al. 2023

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“…For example, NiO is a p-type semiconductor, while MgO is an insulator with a wide bandgap. By forming heterostructures or composite materials, the joint system can exhibit unique optical and electrical properties suitable for solar cells, sensors, and other energy conversion devices [ [33] , [34] , [35] , [36] ].…”

Section: Introductionmentioning

confidence: 99%

Lattice variation as a function of concentration and grain size in MgO–NiO solid solution system

Barad,

Kimmel,

Opalińska

et al. 2024

Heliyon

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“…Up till now, noble metal-based electrocatalysts have been shown to be high-performance catalysts for electrochemical NH 3 synthesis, but scarcity and high cost severely limit their widespread use. Metal oxides have been widely used in the reduction of NO 3 – or NO to NH 3 due to their own oxygen vacancies/lattice oxygen, which could weaken the N–O bond and boost the electrocatalytic performance. − Inspired by Fe activity sites in the Haber–Bosch catalysts and nitrogenase enzymes, Wang’s group discovered that Fe single-atom catalysts can effectively prevent the N–N coupling step required for N 2 . Sun’s group reported that Fe in metal oxides (FeOOH) can be used as active sites to promote nitrate reduction to NH 3 .…”

Section: Introductionmentioning

confidence: 99%

In Situ Growth of Fe₂O₃ Nanorod Arrays on Carbon Cloth with Rapid Charge Transfer for Efficient Nitrate Electroreduction to Ammonia

Tang

et al. 2022

ACS Appl. Mater. Interfaces

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Electrochemical reduction of nitrate to ammonia (NH3), a green NH3 production route upon combining with renewable energy sources, is an appealing and alternative method to the Haber–Bosch process. However, this process not only involves the complicated eight-electron reduction to transform nitrate into various nitrogen products but simultaneously suffers from the competitive hydrogen evolution reaction, challenged by a lack of efficient catalysts. Herein, the in situ growth of Fe2O3 nanorod arrays on carbon cloth (Fe2O3 NRs/CC) is reported to exhibit a high NH3 yield rate of 328.17 μmol h–1 cm–2 at −0.9 V versus RHE, outperforming most of the reported Fe catalysts. An in situ growth strategy provides massive exposed active sites and a fast electron-transport channel between the carbon cloth and Fe2O3, which accelerates the charge-transport rate and facilitates the conversion of nitrate to NH3. In situ Raman spectroscopy in conjunction with attenuated total reflection Fourier transform infrared spectroscopy reveals the catalytic mechanism of nitrate to NH3. Our study provides not only an efficient catalyst for NH3 production but also useful guidelines for the pathways and mechanism of nitrate electroreduction to NH3.

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Low temperature conversion of methane to syngas using lattice oxygen over NiO-MgO

Cited by 11 publications

References 45 publications

Self‐Supported Pd Nanorod Arrays for High‐Efficient Nitrate Electroreduction to Ammonia

Self‐Supported Pd Nanorod Arrays for High‐Efficient Nitrate Electroreduction to Ammonia

Lattice variation as a function of concentration and grain size in MgO–NiO solid solution system

In Situ Growth of Fe₂O₃ Nanorod Arrays on Carbon Cloth with Rapid Charge Transfer for Efficient Nitrate Electroreduction to Ammonia

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Low temperature conversion of methane to syngas using lattice oxygen over NiO-MgO

Cited by 11 publications

References 45 publications

Self‐Supported Pd Nanorod Arrays for High‐Efficient Nitrate Electroreduction to Ammonia

Self‐Supported Pd Nanorod Arrays for High‐Efficient Nitrate Electroreduction to Ammonia

Lattice variation as a function of concentration and grain size in MgO–NiO solid solution system

In Situ Growth of Fe2O3 Nanorod Arrays on Carbon Cloth with Rapid Charge Transfer for Efficient Nitrate Electroreduction to Ammonia

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In Situ Growth of Fe₂O₃ Nanorod Arrays on Carbon Cloth with Rapid Charge Transfer for Efficient Nitrate Electroreduction to Ammonia