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Highly n/o co-doped ultramicroporous carbons derived from nonporous metal-organic framework for high performance supercapacitors

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Chinese Chemical Letters 2021年第4期32卷 1491-1496页

作者： Yangyi Gu Ling Miao Ying Yin Mingxian Liu Lihua Gan Liangchun Li Shanghai Key Lab of Chemical Assessment and Sustainability School of Chemical Science and EngineeringTongji UniversityShanghai 200092China

A new nonporous Zn-based metal-organic framework(nPMoF) synthesized from a high nitrogencontaining rigid ligand was converted into porous carbon materials by direct carbonization without adding additional carbon sources.A series of nPMoF-derived porous carbons with very high n/o contents(24.1% for nPMoF-700,20.2% for nPMoF-800,15.1% for nPMoF-900) were prepared by adjusting the pyrolysis *** nPMoF-800 fabrica ted electrode exhibits a high capacitance of220 F/g and extremely large surface area normalized capacitance of 57.7 μF/cm~2 compared to other reported MoF-derived porous carbon electrodes,which could be attributed to the abundant ultramicroporosity and high n/o *** importantly,symmetric supercapacitor assembled with the MoF-derived carbon manifests prominent stability,i.e.,99.1 % capacitance retention after 10,000 cycles at 1.0 A/*** simple preparation of MoF-derived porous carbon materials not only finds an application direction for a variety of porous or even nonporous MoFs,but also opens a way for the production of porous carbon materials for superior energy storage.

关键词： n/o co-doped Ultramicroporous Metal-organic frameworks Porous carbons Supercapacitors

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Modulating pollutant adsorption and peroxymonosulfate activation sites on co_(3)o_(4)@n,o doped-carbon shell for boosting catalytic degradation activity

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Chinese Journal of Structural Chemistry 2024年第8期43卷 18-26页

作者： Ruiying Liu Li Zhao Baishan Liu Jiayuan Yu Yujie Wang Wanqiang Yu Di Xin Chaoqiong Fang Xuchuan Jiang Riming Hu Hong Liu Weijia Zhou Institute for Advanced Interdisciplinary Research(iAIR) School of Chemistry and Chemical EngineeringUniversity of JinanJinan250022PR China Zhejiang Viersin Advanced Materials co. Ltd6 Donggang RoadHaiyan Economic Development ZonePR China School of Physics and Technology University of JinanJinan250022PR China Institute for Smart Materials&Engineering University of JinanJinan250022PR China State Key Laboratory of Crystal Materials Shandong UniversityJinan250100PR China

The construction of double active sites for pollutant adsorption and peroxymonosulfate(PMS)activation on the surface of catalyst is conducive to further enhancing the pollutant-removing ***,a n,o co-doped carbon-encapsulated tricobalt tetraoxide(co_(3)o_(4)@n,o-C)with double active sites is prepared by a one-step laser carbonization *** optimized co_(3)o_(4)@n,o-C shows excellent tetracycline(TC)removal ability,in which the k value reaches 0.608 min^(-1).on the surface of co_(3)o_(4)@n,o-C,TC is adsorbed to the n site,and PMS is activated at the o *** double active sites on the catalyst surface not only avoids competition for the active site,but also confines the pollutant molecules to the surface of the catalyst,thus shortening the migration distance between reactive oxygen species(RoS)and the pollutant and boosting the removal efficiency of *** addition,the co_(3)o_(4)@n,o-C/PMS system exhibits both good resistance to environmental interference and cyclic ***,a practical continuous flow reactor based on co_(3)o_(4)@n,o-C catalyst is built,which shows a stable and efficient TC degradation performance.

关键词： Heterogeneous catalysis n/o co-doped Dual active sites Advanced oxidation processes Laser carbonization

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