期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 1, 页码 918-926出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b10502
关键词
nitrogen-doped ordered mesoporous carbons; biological dye; electrochemical sensor; catechol and ydroquinone; high-pressure CO2 storage
资金
- Western Light Program of the Chinese Academy of Sciences [XBBS201317]
- International Science and Technology Cooperation Project of the Xinjiang Uyghur Autonomous Region [20146003]
- One Hundred Talents Project Foundation Program of the Chinese Academy of Sciences
- National Natural Science Foundation of China [21203244, 21473247]
- Young Creative Sci-Tech Talents Cultivation Project of the Xinjiang Uyghur Autonomous Region
- Molecular Foundry - Office of Science, Office of Basic Energy Sciences, U.S. Department of Energy [DE-AC02-05CH11231]
Herein, a series of nitrogen-doped ordered mesoporous carbons (NOMCs) with tunable porous structure were synthesized via a hard-template method with a green biological dye as precursor, under various carbonization temperatures (700-1100 degrees C). Compared with the ordered mesoporous silica-modified and unmodified electrodes, the use of electrodes coated by NOMCs (NOMC-700-NOMC-1100) resulted in enhanced signals and well-resolved oxidation peaks in electrocatalytic sensing of catechol and hydroquinone isomers, attributable to NOMCs open porous structures and increased edge-plane defect sites on the N-doped carbon skeleton. Electrochemical sensors using NOMC-1000-modified electrode were fabricated and proved feasible in tap water sample analyses. The NOMCs were also used as sorbents for high-pressure CO2 storage. The NOMC with the highest N content exhibits the best CO2 absorption capacities of 800.8 and 387.6 mg/g at 273 and 298 K (30 bar), respectively, which is better than those of other NOMC materials and some recently reported CO2 sorbents with well-ordered 3D porous structures. Moreover, this NOMC shows higher affinity for CO2 than for N-2, a benefit of its higher nitrogen content in the porous carbon framework.
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