TY  - JOUR
AU  - Zhang, Jin
AU  - Wang, Yaxin
AU  - Yang, Chujie
AU  - Chen, Sian
AU  - Li, Zhengjian
AU  - Cheng, Yi
AU  - Wang, Haining
AU  - Xiang, Yan
AU  - Lu, Shanfu
AU  - Wang, Shuangyin
PY  - 2021
TI  - Elucidating the electro-catalytic oxidation of hydrazine over carbon nanotube-based transition metal single atom catalysts
JO  - Nano Research
SN  - 1998-0124
SP  - 4650
EP  - 4657
VL  - 14
IS  - 12
AB  - Elucidating the reaction mechanism of hydrazine oxidation reaction (HzOR) over carbon-based catalysts is highly propitious for the rational design of novel electrocatalysts for HzOR. In present work, isolated first-row transition metal atoms have been coordinated with N atoms on the graphite layers of carbon nanotubes via a M-N4-C configuration (MSA/CNT, M=Fe, Co and Ni). The HzOR over the three single atom catalysts follows a predominant 4-electron reaction pathway to emit N2 and a negligible 1-electron pathway to emit trace of NH3, while their electrocatalytic activity for HzOR is dominated by the absorption energy of N2H4 on them. Furthermore, FeSA/CNT reverses the passivation effect on Fe/C and shows superior performance than CoSA/CNT and NiSA/CNT with a recorded high mass activity for HzOR due to the higher electronic charge of Fe over Co and Ni in the M-N4-C configuration and the lowest absorption energy of N2H4 on FeSA/CNT among the three MSA/CNT catalysts.
UR  - https://doi.org/10.1007/s12274-021-3397-9
DO  - 10.1007/s12274-021-3397-9