期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 8, 期 23, 页码 8675-8680出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.0c01800
关键词
metal-organic frameworks; quasi-MOFs; straw-bundle-like; Ce-MOF derivative; urea oxidation reaction
资金
- National Natural Science Foundation of China [NSFC-U1904215, 21671170, 21673203]
- Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP)
- Program for New Century Excellent Talents of the University in China [NCET-13-0645]
- Six Talent Plan [2015-XCL-030]
- Qinglan Project of Jiangsu
- Program for Colleges Natural Science Research in Jiangsu Province [18KJB150036]
- Science and Technology Innovation Foster Foundation of Yangzhou University [2016CXJ010]
Cerium-based metal-organic framework (Ce-MOF) materials are promising electrocatalysts, while the catalytic activity of Ce-MOFs is lacking due to their inherent disadvantages (poor conductivity), and further improvements are needed. Herein, we propose a method for synthesizing a quasi-Ce-MOF straw-bundle composite assembled from one-dimensional (1D) nanorods. This is a method in which the MOF is directly heat-treated with a nitrogen atmosphere, and controlled partial pyrolysis results in the formation of a quasi-MOF. It is worth noting that the quasi-MOF material (Ce-MOF-350) calcined at 350 degrees C maintains the porous structure of the precursor while having more exposed active centers. Therefore, the catalytic activity of Ce-MOF-350 for the urea oxidation reaction (UOR) is greatly improved. This material also has good long-term stability because the 1D nanorods are closely connected. Through the reasonable calcination of Ce-MOF materials, this study provides a new strategy for improving the activity of electrocatalysts and developing high-efficiency electrocatalysts.
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