TY - JOUR
T1 - Hollow carbon architectures with mesoporous shells via self-sacrificial templating strategy using metal-organic frameworks
AU - Li, Tao
AU - Ding, Bing
AU - Malgras, Victor
AU - Na, Jongbeom
AU - Qin, Zongyi
AU - Lu, Xiangjun
AU - Bando, Yoshio
AU - Nara, Hiroki
AU - Alothman, Zeid A.
AU - Wang, Jie
AU - Yamauchi, Yusuke
N1 - Funding Information:
We would like to gratefully acknowledge the financial support from Natural Science Foundation of Jiangsu Province (No. BK20170778), NSFC (No. 51672128, 21773118, U1802256), and the Researchers Supporting Project (RSP-2020/1) from King Saud University (Riyadh, Saudi Arabia). T. L. would like to acknowledge the support from the Fundamental Research Funds for the Central Universities (CUSF–DH–D–2018001) and the China Scholarship Council (201806630044). B. D. and J. W. would like to acknowledge the Postdoctoral Fellowship of the Japan Society for the Promotion Science (18F18764, 18F18038). X. L. would like to acknowledge the Natural Science Foundation of Fujian Province of China (No. 2018 J01429), the Program for Innovative Research Team in Science and Technology in Fujian Province University, and Open Fund of Fujian Provincial Key Laboratory of Functional Materials and Applications (No. fma2018002). In addition, this work was performed in part at the Queensland node of the Australian National Fabrication Facility, a company established under the National Collaborative Research Infrastructure Strategy to provide nano and microfabrication facilities for Australia’s researchers.
Publisher Copyright:
© 2020
PY - 2021/9/15
Y1 - 2021/9/15
N2 - The rational design and fabrication of ordered mesoporous materials with highly exposed surface area are of great significance to address the fundamental challenges in electrochemistry-related applications by providing more active sites and fast ion/gas diffusion channel. In this work, a self-template method is reported to prepare hollow-structured mesoporous carbon (HOMC) nanoplates by depositing resol-F127 micelles onto the surface of metal–organic-framework (MOF) nanoplates, followed by hydrothermal reaction and carbonization. The parameters influencing the morphology and microstructure of the HOMC materials, i.e., the MOF-to-resol-F127 ratio and the concentration of resol-F127 micelles, are systematically investigated. Fe-doped HOMC (Fe/HOMC) is obtained after carbonization, as a result from adding FeCl3 during the hydrothermal reaction. Benefiting from morphological aspects, such as the nanoplate shape, the hollow structure, and mesoporous walls, the Fe/HOMC exhibits higher electrocatalytic activity and efficiency than the commercial Pt/C during oxygen reduction reaction (ORR). In addition, when compared to traditional Pt/C benchmark, the Fe/HOMC shows a superior durability and tolerance to methanol poisoning while operating for ORR. The assembled Zn-air battery possesses high power densities with excellent cycling stability. The strategy proposed here can provide a new avenue for the design of ordered mesoporous materials with hollow structure for a wide variety of applications.
AB - The rational design and fabrication of ordered mesoporous materials with highly exposed surface area are of great significance to address the fundamental challenges in electrochemistry-related applications by providing more active sites and fast ion/gas diffusion channel. In this work, a self-template method is reported to prepare hollow-structured mesoporous carbon (HOMC) nanoplates by depositing resol-F127 micelles onto the surface of metal–organic-framework (MOF) nanoplates, followed by hydrothermal reaction and carbonization. The parameters influencing the morphology and microstructure of the HOMC materials, i.e., the MOF-to-resol-F127 ratio and the concentration of resol-F127 micelles, are systematically investigated. Fe-doped HOMC (Fe/HOMC) is obtained after carbonization, as a result from adding FeCl3 during the hydrothermal reaction. Benefiting from morphological aspects, such as the nanoplate shape, the hollow structure, and mesoporous walls, the Fe/HOMC exhibits higher electrocatalytic activity and efficiency than the commercial Pt/C during oxygen reduction reaction (ORR). In addition, when compared to traditional Pt/C benchmark, the Fe/HOMC shows a superior durability and tolerance to methanol poisoning while operating for ORR. The assembled Zn-air battery possesses high power densities with excellent cycling stability. The strategy proposed here can provide a new avenue for the design of ordered mesoporous materials with hollow structure for a wide variety of applications.
KW - Hollow structure
KW - Mesoporous carbon
KW - Metal–organic-framework
KW - Oxygen reduction reaction
KW - Self-sacrificial template
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U2 - 10.1016/j.cej.2020.127635
DO - 10.1016/j.cej.2020.127635
M3 - Article
AN - SCOPUS:85097209387
SN - 1385-8947
VL - 420
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 127635
ER -