Encapsulating atomic molybdenum into hierarchical nitrogen-doped carbon nanoboxes for efficient oxygen reduction
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
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Pages (from-to) | 67-76 |
Journal / Publication | Journal of Colloid and Interface Science |
Volume | 620 |
Online published | 5 Apr 2022 |
Publication status | Published - 15 Aug 2022 |
Link(s)
Abstract
Construction of single-atom catalysts (SACs) with maximally exposed active sites remains a challenging task mainly because of the lack of suitable host matrices. In this study, hierarchical N-doped carbon nanoboxes composed of ultrathin nanosheets with dispersed atomic Mo (denoted as hierarchical SA-Mo-C nanoboxes) were fabricated via a template-engaged multistep synthesis process. Comprehensive characterizations, including X-ray absorption fine structure analysis, reveal the formation of Mo-N4 atomic sites uniformly anchored on the hierarchical carbon nanoboxes. The prepared catalysts offer structural and morphological advantages, including ultrathin nanosheet units, unique hollow structures and abundant active Mo-N4 species, that result in excellent activity with a half-wave potential of 0.86 V vs. RHE and superb stability for the oxygen reduction reaction in 0.1 M KOH; thus, the catalysts are promising air–cathode catalysts for Zn-air batteries with a high peak power density of 157.6 mW cm−2.
Research Area(s)
- Hollow structures, Mo-N4, Nanosheets, Oxygen reduction reaction, single-atom catalysts (SACs)
Citation Format(s)
Encapsulating atomic molybdenum into hierarchical nitrogen-doped carbon nanoboxes for efficient oxygen reduction. / Ma, Fei-Xiang; Zhang, Guobin; Wang, Meiyu et al.
In: Journal of Colloid and Interface Science, Vol. 620, 15.08.2022, p. 67-76.
In: Journal of Colloid and Interface Science, Vol. 620, 15.08.2022, p. 67-76.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review