Chromium oxide nanoparticles in-situ immobilized onto nitrogen-doped carbon plates with boosted catalytic activity toward nitrogen reduction reaction
Canadian Journal of Chemical Engineering, ISSN: 1939-019X
2024
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Article Description
A chromium oxide-based nanocomposite (CrO@NC) is designed and prepared via a simple pyrolysis route with Cr-based metal organic framework (MOF) as a template. The research results indicate that CrO nanoparticles have an average size of ~70 nm and are in situ formed and imbedded onto the Cr-based MOF-derived 2D N-doped carbon microplates. When employed as an inexpensive electrocatalyst for nitrogen reduction reaction (NRR) to synthesize ammonia, CrO@NC demonstrates an improved and stable catalytic activity in comparison with bare CrO. A large ammonia production rate of 29.42 μg mg h under a lower potential of −0.4 V versus reversible hydrogen electrode (RHE) can be acquired with a Faradic efficiency of 9.89% in sodium sulphate solution. Additionally, a satisfactory selectivity can also be achieved without hydrazine byproduct. The greatly promoted catalytic activity of CrO@NC is regarded to be concerned with its desirable structures such as 2D planar topological structure with expanded active surface area, abundant catalytic sites, and effective combination with conductive carbon.
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