Graphite Epoxide

Chattopadhyay, J.; Mukherjee, Arnab; Hamilton, C. E.; Kang, JungHo; Chakraborty, Soma; Guo, Wenhua; Kelly, Kevin F.; Barron, Andrew R.; Billups, W. E.

doi:10.1021/ja711063f

Cited by 69 publications

(54 citation statements)

References 18 publications

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“…Since the entire basal plane will not be functionalised, the edges allow for attachment of PEI but in very low concentrations. This conclusion was confirmed by synthesising graphite epoxide, [24] and then reacting it with PEI. Previous studies [24] have shown that when graphite epoxide is synthesised the oxidation takes place on the edges of the sheet and not on the basal plane.…”

Section: Pei-gicmentioning

confidence: 64%

“…This conclusion was confirmed by synthesising graphite epoxide, [24] and then reacting it with PEI. Previous studies [24] have shown that when graphite epoxide is synthesised the oxidation takes place on the edges of the sheet and not on the basal plane. The product of reactions with PEI showed a similar degree of functionalisation by TGA to PEI-GICs, indicating that PEI was only added to the edges and not the basal plane.…”

Section: Pei-gicmentioning

confidence: 64%

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Polyethyleneimine functionalised nanocarbons for the efficient adsorption ofcarbon dioxide with a low temperature of regeneration

Dillon

Andreoli

Cullum

et al. 2014

Journal of Experimental Nanoscience

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Polyethyleneimine (PEI) conjugates with a range of nanocarbons (NCs) have been prepared, and their performances with regard to carbon dioxide absorption and liberation are compared. PEI-functionalised multi-walled carbon nanotubes (PEI-MWNTs) prepared by the reaction of branched PEI (25,000 Da) with F-MWNTs in the presence of pyridine, showed a lower CO 2 capacity at 25 C (5 wt%, 1.1 mmol CO 2 /g adsorbent) as compared to PEI-SWNTs (9.2 wt%, 2.1 mmol CO 2 /g adsorbent), consistent with the interior layers of the MWNTs adding weight to the base NC without adding functionality. PEI-functionalised graphite/graphene was prepared by three routes: fluorinated graphite intercalation compounds, prepared from natural graphite powder, were reacted with PEI in EtOH with pyridine; exfoliated natural graphite powder was reacted with Boc-Phe(4-N 3 )-OH, and subsequently PEI to give PEI-Phe(4-N-G); graphite oxide (GO) was reacted with PEI in the presence of NEt 3 to give PEI-GO. The CO 2 capacity of PEI-GO at 25 C (8 wt%, 1.8 mmol CO 2 /g adsorbent) was comparable to that of PEI-SWNTs making GO a valid and cheaper alternative to the SWNT scaffold. The temperature of CO 2 desorption of the PEINCs was 75 C, providing a lower energy load for regeneration compared to current amine-based scrubbing units. The rate of CO 2 uptake is seen to depend on the curvature of the NC substrate.

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Section: Pei-gicmentioning

confidence: 64%

Section: Pei-gicmentioning

confidence: 64%

Polyethyleneimine functionalised nanocarbons for the efficient adsorption ofcarbon dioxide with a low temperature of regeneration

Dillon

Andreoli

Cullum

et al. 2014

Journal of Experimental Nanoscience

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“…Surprisingly, the epoxidation did not give rise to a higher portion of singly bonded oxygen (either epoxide or phenol/hydroxyl) in the oNPC sample, in comparison with the pristine NPC sample. It has been known that stable graphite epoxide was synthesized from epoxidation of graphite by using a similar approach [26]. However, sine the C-C bonds are the more reactive sites relative to C=C in sucrose-derived carbon, those fresh epoxides could be preferentially anchored on dangling C-C bonds.…”

Section: Resultsmentioning

confidence: 99%

“…However, it is still suggested more efforts could be devoted to understanding the roles of epoxides on graphitic carbons in electrochemical storage of monovalent cations, considering the unique physicochemical properties of epoxides and the difficulty in the synthesis of highly porous graphite epoxide [17,20,26]. believed that all the TFSI − anions were washed away from the OCV electrode.…”

Section: (E)mentioning

confidence: 99%

“…Our previous study showed the reversible lithium storage by epoxides on the basal plane of graphene oxide [20]. It was reported that epoxidation of graphite produced graphite epoxide [26]. As the conductivity of graphene oxide is low, the original aim of this work was hence to functionalize conducting porous carbons through epoxidation with the purpose of comprehensively utilizing the electroactive epoxide groups on a relatively conducting matrix.…”

Section: Introductionmentioning

confidence: 99%

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High-capacity pseudocapacitive Li storage on functional nanoporous carbons with parallel mesopores

Zeng

Wang

2016

Energy Storage Materials

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. conductivity and enhanced surface redox activity endows the functionalized carbon cathode with high capacity (313 mA h/g@50 mA/g), good stability (>200 cycles) and high rate capability (148 mA h/g@400 mA/g).

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