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porous monoliths of 3D graphene for electric double-layer supercapacitors

Carbon Energy 2021年第2期3卷 193-224页

作者： Jinjue Zeng Chenyang Xu Tian Gao Xiangfen Jiang Xue‐Bin Wang National Laboratory of Solid State Microstructures(NLSSM) Jiangsu Key Laboratory of Artificial Functional MaterialsCollaborative Innovation Center of Advanced MicrostructuresCollege of Engineering and Applied SciencesNanjing UniversityNanjingChina WPI Center for Materials Nanoarchitectonics National Institute for Materials Science(NIMS)TsukubaJapan

For delivering the nanoscaled extraordinary characteristics in macroscopical bulk,it is essential to integrate two-dimensional nanosheets into threedimensional(3D)porous monoliths,alternatively called as 3D architectures,3D networks,or *** intersupported structure of porous monolithic 3D graphene(3DG)can prevent aggregation or restacking of graphene individuals,and the interconnected sp^(2) network of 3DG not only can provide the highway for the transport of electron/phonon but also can present continual cavities/channels for mass *** review summarizes the synthesis methodology of 3DG porous monoliths and highlights the application for electric double-layer *** challenges and future prospects about the manufacture and application of 3DG are also discussed.

关键词： 3D graphene electric double-layer capacitor graphene aerogel porous monolith supercapacitor

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Preparation and Characterization of Freestanding Hierarchical porous TiO_2 monolith Modified with Graphene Oxide

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Nano-Micro Letters 2012年第2期4卷 90-97页

作者： Lei Wan Mingce Long Dongying Zhou Liying Zhang Weimin Cai School of Environmental Science and Engineering Shanghai Jiao Tong University Key Laboratory for Thin Film and Microfabrication of the Ministry of Education Research Institute of Micro/Nano Science and Technology Shanghai Jiao Tong University

Catalyst recovery is one of the most important aspects that restrict the application of Ti O_2 photocatalyst. In order to reduce restrictions and improve the photocatalytic efficiency, a hierarchical porous Ti O_2 monolith(PTM) with well-defined macroporous and homogeneous mesoporous structure was prepared by using a sol-gel phase separation method. P123 was used as the mesoporous template and graphene oxide was applied to increase the activity and integrity of the monolithic Ti O_2. According to scanning electron microscopy and the Barrett-Joyner-Halenda measurements, PTM_3 is mainly composed of 10 nm anatase crystallines with3.6 nm mesopores and 2-8 μm macropores. Further characterization suggests carbon and nitrogen have been maintained in the PTM during calcinations so as to induce the visible light activity. The PTM with 0.07 wt%graphene oxide dosage shows high efficiency for methyl orange(MO) decolorization under both full spectrum and visible light irradiation(λ >400 nm). Besides, the monolith remains intact and has good photocatalytic stability after four cyclic experiments.

关键词： Photocatalysis Titanium dioxide porous monolith Graphene oxide

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Thiol-yne Click Adamantane monolithic Stationary Phase for Capillary Electrochromatography

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Chinese Journal of Chemistry 2012年第10期30卷 2281-2284页

作者： Dao,Thi Thu Hien Guerrouache,Mohamed Carbonnier,Benjamin Institut de Chimie et des Materiaux Paris Est UMRCNRS 7182&Universite Paris-Est Creteil2-8 rue Henri Dunant94320 ThiaisFrance

A porous crosslinked organic polymer based on N-acryloxysuccinimide （NAS） and ethylene dimethacrylate （EDMA） was prepared inside 75 μm i.d. fused silica capillary as functionalizable monolithic stationary phase for electrochromatographic applications. Succinimide groups on the monolith surface provide reactive sites able to re- act readily through standard electrophile-nucleophile chemistry. Propargylamine was used to prepare alkyne func- tionalized poly（NAS-co-EDMA）. Onto this thiol-reactive polymer surface was grafted adamantane units via a photochemically-driven addition reaction. Chemical characterization was performed in situ after each synthetic step by means of Raman spectroscopy and grafting kinetics was investigated to ensure quantitative grafting of 1-adamantanethiol. The as-designed monolithic stationary phase exhibited typical reversed-phase separation mechanism as evidenced by the linear increase of the logarithm of retention factor of neutral aromatic solutes with the increase of the aqueous buffer content in the mobile phase.

关键词： adamantane electrochromatography porous monolith surface chemistry thiol-yne click

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Ionic liquid-regenerated macroporous cellulose monolith:fabrication,characterization and its protein chromatography

Ionic liquid-regenerated macroporous cellulose monolith:fabr...

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中国化学会第22届全国色谱学术报告会及仪器展览会

作者： Kaifeng Du Department of Pharmaceutical ＆ Biological Engineering School of Chemical EngineeringSichuan University

＜正＞Macroporous cellulose monolith as chromatographic support was successfully fabricated from an ionic liquid dissolved cellulose solution by an emulsification method and followed by the cross-linking reaction and ... 详细信息

关键词： cellulose porous monolith emulsification ionic liquid protein chromatography

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CN Foam Backbone Loaded with Non-stacking Graphene Nanosheets for High-performance Supercapacitor Electrode

CN Foam Backbone Loaded with Non-stacking Graphene Nanosheet...

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2015年中西部地区无机化学化工学术研讨会

作者： Guoxing Zhu Chunyan Xi Yuanjun Liu Jun Zhu Xiaoping Shen School of Chemistry and Chemical Engineering Jiangsu University State Key Laboratory of Coordination Chemistry Nanjing University School of Environmental and Chemical Engineering Jiangsu University of Science and Technology

Three-dimensional porous carbon-based foams have recently attracted increasing interest owing to their exciting potential in various fields. Herein, hierarchical porous monoliths, CN foam backbone loaded with free graphene sheets, have been prepared. In this method, graphene oxide sheets were firstly loaded on the usual melamine foam that was selected as raw material for CN backbone. With a following annealing process in N atmosphere, melamine foam was transferred into CN foam;at the same time, graphene oxide sheets were transferred into reduced graphene oxide, forming composite foam. The loading density of graphene on CN backbone can be tuned by the dosage of graphene oxide. The obtained composite monoliths exhibit excellent cycling performance and good rate capacity when used as pseudocapacitive electrode materials. At current density of 0.5 and 10 A/g, the optimized electrode exhibits areal specific capacitance of 1067 and 463 m F/cm with excellent cycling stability. The excellent property can be attributed to the unique macropore structures that endow sufficient space available to interact with the electrolytes, and the pseudocapacitive contribution originated from the CN composition. This facile synthesis strategy and the good electrochemical properties suggest the synthesized CN-graphene composites are promising materials for supercapacitor application.

关键词： Supercapacitor Graphene Carbon-based foam Composite porous monolith

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