| 论文题目 | Calixarene-Based {Co-26} Burr Puzzle: An Efficient Oxygen Reduction Catalyst |
| 作 者 | ; Xinxin Hang,Wenxiu Yang, Shentang Wang, Haitao Han, Wuping Liao |
| 发表年度 | JUL 2019 |
| 刊物名称 | ACS APPLIED NANO MATERIALS |
| 卷、期、页码 | 2; 7; 4232-4237 |
| 影响因子 | |
| 论文摘要 | Supramolecular coordination complexes (SCCs) have been investigated extensively as the catalysts. Herein, we synthesize a calixarene-based {Co-26} SCC (CIAC-126) for this purpose, which is constructed by 6 shuttlecock-like Co-3-TC4A secondary building units, 1 Co-8 cubic cluster, and 12 bridging imidazole-4,5-dicarboxylic ligands. CIAC-126 is featured with a three-piece burr puzzle in which each piece is perpendicular to the other two as the axes in a 3D Cartesian coordination system, leading to abundant edge defects. Electrocatalytic studies show that the composite of CIAC-126 and the commercial ordered mesoporous carbon (CMK-3), CIAC-126&CMK-3 (1:3, w/w), exhibits Pt-like electrocatalytic oxygen reduction activity in basic media due to the synergistic effect of the two components which provides both approachable active sites and electrical conductivity. It has higher stability than the commercial Pt/C catalyst, and there is almost no change in the oxygen reduction reaction (ORR) polarization curve after 3000 cycles. Furthermore, the nickel precursor instead of the cobalt feed leads to the formation of an open icosahedral {Ni-36} coordination cage (CIAC-127) which displays modest ORR. activity. |
| 全文链接 | https://pubs.acs.org/doi/10.1021/acsanm.9b00683 |
| 附件地址 |
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