TY - JOUR
T1 - Hollow Carbon Nanorod Confined Single Atom Rh for Direct Formic Acid Electrooxidation
AU - Hu, Yezhou
AU - Chen, Changsheng
AU - Shen, Tao
AU - Guo, Xuyun
AU - Yang, Chen
AU - Wang, Deli
AU - Zhu, Ye
N1 - Funding Information:
This work was financially supported by the Research Grants Council of Hong Kong (Project No. C5029‐18E), the Hong Kong Polytechnic University (Grant No. ZVRP), and the National Natural Science Foundation (91963109).
Funding Information:
This work was financially supported by the Research Grants Council of Hong Kong (Project No. C5029-18E), the Hong Kong Polytechnic University (Grant No. ZVRP), and the National Natural Science Foundation (91963109).
Publisher Copyright:
© 2022 The Authors. Advanced Science published by Wiley-VCH GmbH.
PY - 2022/11/11
Y1 - 2022/11/11
N2 - Nearly theoretical 100% atomic utilization (supposing each atom could serve as independent sites to play a role in catalyz) of single-atom catalysts (SACs) makes it highly promising for various applications. However, for most SACs, single-atom sites are trapped in a solid carbon matrix, which makes the inner parts hardly available for reaction. Herein, a hollow N-doped carbon confined single-atom Rh (Rh-SACs/HNCR) is developed via a coordination-template method. Both aberration-corrected scanning transmission electron microscopy and energy dispersive X-ray spectroscopy mapping confirm the uniform distribution of Rh single atoms. Owning to the unique hollow structure and effective carbon confinement, excessive conversion from pyridinic/pyrrolic N to graphic N is hindered. As a proof of concept, Rh-SACs/HNCR exhibits superior activity, stability, selectivity, and anti-poisoning capability in formic acid oxidation reaction compared with the counterpart Rh/C, Pd/C, and Pt/C catalysts. This work provides a powerful strategy for synthesizing hollow carbon confined single-atom catalysts apply in various energy-related systems.
AB - Nearly theoretical 100% atomic utilization (supposing each atom could serve as independent sites to play a role in catalyz) of single-atom catalysts (SACs) makes it highly promising for various applications. However, for most SACs, single-atom sites are trapped in a solid carbon matrix, which makes the inner parts hardly available for reaction. Herein, a hollow N-doped carbon confined single-atom Rh (Rh-SACs/HNCR) is developed via a coordination-template method. Both aberration-corrected scanning transmission electron microscopy and energy dispersive X-ray spectroscopy mapping confirm the uniform distribution of Rh single atoms. Owning to the unique hollow structure and effective carbon confinement, excessive conversion from pyridinic/pyrrolic N to graphic N is hindered. As a proof of concept, Rh-SACs/HNCR exhibits superior activity, stability, selectivity, and anti-poisoning capability in formic acid oxidation reaction compared with the counterpart Rh/C, Pd/C, and Pt/C catalysts. This work provides a powerful strategy for synthesizing hollow carbon confined single-atom catalysts apply in various energy-related systems.
KW - coordination-template method
KW - formic acid oxidation reaction
KW - hollow porous structure
KW - single-atom catalysts
UR - http://www.scopus.com/inward/record.url?scp=85141969837&partnerID=8YFLogxK
U2 - 10.1002/advs.202205299
DO - 10.1002/advs.202205299
M3 - Journal article
C2 - 36366919
AN - SCOPUS:85141969837
SN - 2198-3844
VL - 9
JO - Advanced Science
JF - Advanced Science
IS - 36
M1 - 2205299
ER -