2020
DOI: 10.1021/acs.inorgchem.0c02058
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Flower-like Hollow MoSe2 Nanospheres as Efficient Earth-Abundant Electrocatalysts for Nitrogen Reduction Reaction under Ambient Conditions

Abstract: Electrocatalytic nitrogen reduction reaction (NRR) is a green and sustainable strategy for artificial nitrogen fixation but remains a significant challenge because of the lack of high-performance electrocatalysts. In this study, flower-like hollow MoSe2 nanospheres as efficient earth-abundant NRR electrocatalysts with a high faradaic efficiency of 14.2% and an ammonia yield of 11.2 μg h–1 mgcat. –1 at ambient conditions were prepared. Such excellent NRR activity can be attributed to the higher specific surface… Show more

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Cited by 33 publications
(19 citation statements)
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“…Similarly, catalysts based on Fe-incorporated MoS 2 nanosheets achieved a good NRR performance, with an 18.8% FE and a normalized ammonia yield of 0.41 μmol cm –2 h –1 (8.63 μg mg cat –1 h –1 ) at −0.3 V RHE and an NH 3 FE of 31.6% and a normalized yield of 5.42 μmol cm –2 h –1 (36.1 mol g cat –1 h –1 ) at −0.2 V RHE . Multiphasic 1T/2H c-MoSe 2 nanosheets also showed a good NRR performance, with a maximum 6.03% FE at −0.5 V RHE and a maximum ammonia yield of 19.9 μg mg cat –1 h –1 at −0.6 V RHE , while a c-MoSe 2 catalyst with a hollow nanosphere morphology exhibited a good ammonia FE of 14.2% at −0.1 V RHE and a maximum yield of 0.66 μmol cm –2 h –1 (11.2 μg mg cat –1 h –1 ) at −0.6 V RHE . Additionally, Fe-doped c-MoTe 2 was found to be active for NH 3 photoreduction to ammonia …”
Section: Electrochemical Nitrogen Fixation Into Ammoniamentioning
confidence: 92%
See 1 more Smart Citation
“…Similarly, catalysts based on Fe-incorporated MoS 2 nanosheets achieved a good NRR performance, with an 18.8% FE and a normalized ammonia yield of 0.41 μmol cm –2 h –1 (8.63 μg mg cat –1 h –1 ) at −0.3 V RHE and an NH 3 FE of 31.6% and a normalized yield of 5.42 μmol cm –2 h –1 (36.1 mol g cat –1 h –1 ) at −0.2 V RHE . Multiphasic 1T/2H c-MoSe 2 nanosheets also showed a good NRR performance, with a maximum 6.03% FE at −0.5 V RHE and a maximum ammonia yield of 19.9 μg mg cat –1 h –1 at −0.6 V RHE , while a c-MoSe 2 catalyst with a hollow nanosphere morphology exhibited a good ammonia FE of 14.2% at −0.1 V RHE and a maximum yield of 0.66 μmol cm –2 h –1 (11.2 μg mg cat –1 h –1 ) at −0.6 V RHE . Additionally, Fe-doped c-MoTe 2 was found to be active for NH 3 photoreduction to ammonia …”
Section: Electrochemical Nitrogen Fixation Into Ammoniamentioning
confidence: 92%
“…233 Multiphasic 1T/2H c-MoSe 2 nanosheets also showed a good NRR performance, with a maximum 6.03% FE at −0.5 V RHE and a maximum ammonia yield of 19.9 μg mg cat −1 h −1 at −0.6 V RHE , 234 while a c-MoSe 2 catalyst with a hollow nanosphere morphology exhibited a good ammonia FE of 14.2% at −0.1 V RHE and a maximum yield of 0.66 μmol cm −2 h −1 (11.2 μg mg cat −1 h −1 ) at −0.6 V RHE . 235 Additionally, Fe-doped c-MoTe 2 was found to be active for NH 3 photoreduction to ammonia. 236 Based on the similar composition to the metallic active center of nitrogenase enzymes, 237,238 group VI transition metal chalcogenides are expected to be active for the NRR, despite their high HER activity.…”
Section: Transition Metal Chalcogenide-based Materials As Nrr Electro...mentioning
confidence: 99%
“…Then, *N 2 is hydrogenated to a series of key *N x H y intermediates. Finally, the further hydrogenation reaction of *NH 2 is implemented to produce NH 3 . Nevertheless, there is a great difficulty in breakage of stable NN because of the extremely high bond energy. Furthermore, the NRR process is greatly restricted by the accompanying hydrogen evolution reaction (HER) . Therefore, the development of suitable catalysts with a capacity to cleave NN and suppress the HER is a critical aspect in achieving an effective NRR.…”
Section: Introductionmentioning
confidence: 99%
“…Rationally constructed MoSe 2 structures can also be used to improve its intrinsic catalytic behavior, and hollow MoSe 2 nanospheres achieved an NH 3 yield rate of 11.2 µg h −1 mg −1 by virtue of their abundant exposed active sites. [298] Nevertheless, structural modulation may not suffice for fabricating MoSe 2 -based materials with optimal performance because it does not mitigate the intrinsic drawbacks of MoSe 2 , such as side reaction inhibition, and combining molecular engineering strategies is a more effective way to boost catalytic performance. In addition to electric energy, light energy is a critical driving force for the NRR, and the common photocatalyst combinations used for the HER may also be suitable for the NRR.…”
Section: Nitrogen Reduction Reaction and Co 2 Reduction Reactionmentioning
confidence: 99%