A flame-retardant post-synthetically functionalized COF sponge as absorbent for spilled oil recovery

Published on Aug 1, 2021in Journal of Materials Science3.553
· DOI :10.1007/S10853-021-06006-W
Yanyan Liu , Zhikun Wang8
Estimated H-index: 8
+ 5 AuthorsSongqing Hu15
Estimated H-index: 15
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Abstract
References38
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Abstract Melamine-based porous organic polymer (POP) is a three-dimensional organic porous material with good thermal stability, large specific surface area, abundant polar groups and low crystallinity. Here, melamine-based POP and flame retardant grafted melamine-based POP (P-POP) is prepared. Compressible POP and P-POP based lithium battery separators with high fire safety and good electrochemical properties are reported first. The compressibility, cycle, rate, size stability and fire safety p...
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#1Xiaowei Mu (USTC: University of Science and Technology of China)H-Index: 22
#2Wei Cai (USTC: University of Science and Technology of China)H-Index: 24
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Abstract N doped carbon nanosheet and B N co-doped carbon (BNC) nanosheet are first prepared through exfoliation of carbon of Schiff based covalent organic frameworks (COFs) under ultrasound using sodium lignin sulfonate as the intercalation agent and modifier. Then poly (vinyl alcohol) (PVA)/BNC nanocomposite with enhanced thermal oxidation stability, good mechanical performances and enhanced flame retardancy has been prepared through solution blending. The temperature at 5 wt% weight loss and ...
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Abstract Covalent organic frameworks (COFs) have recently been demonstrated to have great application potentials in water treatment. Their photocatalytic performance towards bacterial disinfection and organic pollutant degradation yet has seldom been investigated. In this study, AgI modified COFs (using 2,5-diaminopyridine and 1,3,5-triformylphloroglucinol as precursors) (COF-PD/AgI) were fabricated and their applications to photocatalytically disinfect bacteria and degrade organic pollutants we...
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#1Shuai Diao (China University of Petroleum)H-Index: 1
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Graphene aerogels with different pore sizes, volumes and degrees of reduction were prepared through Pickering emulsion method. The controllable preparation of aerogels was achieved. The graphene aerogels prepared were characterized by FTIR and XPS. The adsorption capacity of pure oil by graphene aerogel was investigated. The graphene aerogels can adsorb pure oil quickly and hardly adsorb water. Linear relation exists between saturated adsorption capacities of graphene aerogels on oil and the den...
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#1Na Han (NCSU: North Carolina State University)H-Index: 17
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Covalent organic frameworks (COFs) have been widely used in catalysis, energy storage, environmental protection, and separation. However, they require a long assembly period (~3 days) and complex synthesis conditions; differences in water resistance have restricted their overall versatility. In this paper, the preparation of COF-DhaTab was optimized, and this process can be easily performed in air. Thus, it is feasible for the scale-up of COF-DhaTab in the near future. The superhydrophobic prope...
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#1Yunzhe Jiang (ECNU: East China Normal University)H-Index: 5
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Abstract This work reports the preparation and post-synthetic modification of COF named BTADHBD with perfluorooctyltriethoxysilane (POTS) to obtain a superhydrophobic COF coating. Through post-synthetic modification, the water contact angle (CA) of BTADHBD is increased from 83.7° to 153.2° without change of crystals morphology and structure. BTADHBD COF coating was prepared on the stainless steel net (SSN) through repeated growth, followed by post-synthetic modification using (±)-glycidol (Glc) ...
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Covalent organic frameworks (COFs) are organic porous materials with many potential applications, which very often depend on the presence of chemical functionality at the organic building blocks. Functionality that cannot be introduced into COFs directly via de novo syntheses can be accessed through post-synthetic modification (PSM) strategies. Current strategies for the post-synthetic modification of COFs involve (i) incorporation of a variety of active metal species by using metal complexation...
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: Covalent organic frameworks (COFs) are attractive materials receiving increasing interest in the literature due to their crystallinity, large surface area, and pore uniformity. Their properties can be tailored towards specific applications by judicious design of COF building blocks, giving access to tailor-made pore sizes and surfaces. In this Concept article, developments in the field of COFs that have allowed these materials to be explored for contaminant adsorption are discussed. Strategies...
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: The construction of stable covalent organic frameworks (COFs) for various applications is highly desirable. Herein, we report the synthesis of a novel two-dimensional (2D) porphyrin-based sp2 carbon-conjugated COF (Por-sp2 c-COF), which adopts an eclipsed AA stacking structure with a Brunauer-Emmett-Teller surface area of 689 m2 g-1 . Owing to the C=C linkages, Por-sp2 c-COF shows a high chemical stability under various conditions, even under harsh conditions such as 9 m HCl and 9 m NaOH solut...
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Silica particles were modified with a poly(4-vinylpyridine) (P4VP) for efficient separation of oil-in-water emulsions. Using a 3-(aminopropyl) triethoxysilane (APTES)-based molecule coupled to an appropriate radical initiator, P4VP chains were built from silica surfaces under mild reaction conditions using surface-initiated supplemental activator and reducing agent atom transfer radical polymerization. P4VP-modified silica particles were successfully used as a pH-switchable barrier for oil/water...
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