Thermal exfoliation of fluorinated graphite

Insights on the reactivity of ordered porous carbons exposed to different fluorinating agents and conditions

“…For the ZTC-XeF 2 , as the fluorine content increases, the C1s (sp 2 ) component decreases (11.3%) and a part of the C-F bond type I shifts to pure type II with intermediate type I/type II contributions as well. The ZTC-FS with increased fluorine amount become insulating (with no C1s (sp 2 ) detected), with only pure type II fluorinated groups being formed, in agreement with other reports [65][66][67][68][69].…”

“…As for the (C 2 F) n structure, this report is equal to 1, which is far from the value of 2.3; hence, the ZTC-XeF 2 can be considered to present predominantly a C-F bonding similar to (C 4 F) n and a small contribution as the (C 2 F) n structure. For the ZTC-FS, this ratio is 0.44, which is less than the ratio corresponding to the covalent (C 2 F) n type indicating a mixture of (C 2 F) n -and (CF) ntype structures [66,69]. For the (CF) n structure, the ratio cannot be calculated taking into account that the C-C-F bonds are not present in such a structure but only C-F bonds.…”

“…This distinction was based on the behavior of these species in the presence or absence of an applied gun flood voltage. Type II and the intermediate zone correspond to C-F bonds presenting a significant binding energy shift without the applied gun flood voltage (i.e., charging effect related to more insulating areas), while type I is related to C-F bonds that do not present binding energy modification with the voltage (more conductive areas) [66]. Type II is more insulating than the intermediate zone and it is attributed to covalent C-F bonds similar to those in the (CF) n , (C 2 F) n , and (C 4 F) n structures.…”

Shock Exfoliation of Graphene Fluoride in Microwave

“…This peak is also composed of a broad and narrow component; however in the present case, the conductivity precluded a Hahn‐echo‐based separation of the different components. There is little evidence of residual CF 2 or CF 3 species, and in conjunction with the observed low intensity of the 19 F signal, indicates highly efficient defluorination of the parent material as compared to previous literature …”

Nitrogen species in few-layer graphene produced by thermal exfoliation of fluorinated graphite intercalation compounds

“…Intercalation compounds of C 2 F are also attractive for this purpose due to possibility of the inserting of various foreign atoms, previously contained in the intercalant, in graphene network. Actually, it has been shown that thermolysis of fluorinated graphite occurs with an evolution of gaseous products and formation of few‐layered graphene . Defect density, functional composition, and surface properties of the product were substantially different from those for the exfoliated graphenes produced by other methods, particularly, by ultrasonic delamination of water suspension of Br 2 ‐intercalated graphite .…”