Exploring the Self‐Cleaning Facets of Fluorinated Graphene Nanoarchitectonics: Progress and Perspectives

Abstract

The development of graphene nanoarchitectonics, including their synthesis, surface modification, interfaces, conductivity and porosity, has moved forward rapidly and attracted attention from interdisciplinary research fields. Fluorinated graphene (FG), a rising star and a fascinating member of graphene family has been identified as a promising material for multiple applications, such as sensors, optics, catalysis and self‐cleaning technologies. In this review, we highlight the important aspects of FG pertinent to physiochemical stability and self‐cleaning technologies. We discuss the precise functionalization of FG surfaces with organic functionalities, which are promising for creating high‐performance graphene derivatives. Also, by utilizing the reactivity of few‐layered FG nanosheets, it is possible to develop coatings based on dispersions of functionalized FG inks coupled with porous solids and tubular nanomaterials with super‐wetting functions. The functional groups of the resultant hybrids are connected to innovative substrates including meshes and macroporous sponges that can be useful for super‐wetting containers and oleophilic sorbents. Furthermore, we discuss hydrophobic FG‐porphyrin hybrids with metal coordination and hydrophobicity dependent photoluminescence. Finally, the self‐cleaning action and anti‐corrosion features of FG hybrids are explored, with potential applications in triboelectric nanogenerators and water harvesting. Future development of these materials should focus on new designs, porosity control, batch uniformity, durable self‐cleaning membranes, smart textiles, eco‐compatible coatings and disposability.

Three in One: Superoleophilic, Chemically and Mechanically Resistant ZIF-7 and ZIF-11 Percolation Networks for Selective Permeation of Oils and Chlorinated Solvents

“…It is important to note that ZIF-7 and ZIF-11 when grown over FG multilayers retained the same peak positions as the pristine ZIFs, underlining the structural identities and phase purity. ,, This also sheds light on the submissive templating ability of FG multilayers akin to graphene derivatives, − which provide the skeleton toward the nucleation and growth of ZIF-7 and ZIF-11 networks. However, we cannot rule out the possibility that the solvent and reaction medium (alkaline pH) influence the defluorination/bonding changes of FG multilayers. ,− This prompted us to further examine the functional groups of these samples by FTIR spectroscopy. Despite having similar metal ion (Zn) and BIM linker, guiding identical functionalities, ZIF-7 and ZIF-11 possess different topologies, and we noticed very minute variations in the characteristic peak positions of the functional groups of the supported and supportless ZIF-7 and ZIF-11 from the FTIR spectra (Figure S2).…”

“…25−28 The control of hydrophobicity and multimodal porosity is an asset which results due to the usage of graphene and its derivatives. 29,30 Jafarian et al reported the synthesis of GO-ZIF-7 followed by fabrication of a chitosan-coated poly(ether sulfone) membrane showing hydrophilic properties for the removal of dyes from water. 31 It is important to mention that separation systems will demand the sorbent's superhydrophobic restoration near its initial form after reuse multiple times.…”

“…It would be intriguing to introduce chemical and hydrolytic stabilities in these hydrophobic ZIFs with sustained superhydrophobicity. There are several routes, including pre/postsynthetic modification to ZIF-7 and ZIF-11 nanostructures employing low-surface-energy molecular entities. , Recently there has been an upsurge on growth of MOFs and ZIFs over layered supports, resulting in 2D-MOF/ZIF nanostructures en route to hierarchical pores and enhanced thermal and physical stabilities. − The control of hydrophobicity and multimodal porosity is an asset which results due to the usage of graphene and its derivatives. , Jafarian et al reported the synthesis of GO-ZIF-7 followed by fabrication of a chitosan-coated poly­(ether sulfone) membrane showing hydrophilic properties for the removal of dyes from water . It is important to mention that separation systems will demand the sorbent’s superhydrophobic restoration near its initial form after reuse multiple times.…”

Materials Nanoarchitectonics at Dynamic Interfaces: Structure Formation and Functional Manipulation

“…The research papers that claim to be nanoarchitectonics are as follows. The application of nanoarchitectonics can be seen in basic fields, such as the synthesis of functional materials [ 204 , 205 , 206 , 207 , 208 , 209 , 210 , 211 , 212 , 213 , 214 , 215 , 216 , 217 , 218 , 219 ], the control of specific structures [ 220 , 221 , 222 , 223 , 224 , 225 , 226 , 227 , 228 , 229 , 230 ], the creation of structures [ 231 , 232 , 233 , 234 , 235 , 236 , 237 , 238 , 239 , 240 ], basic physics [ 241 , 242 , 243 , 244 , 245 , 246 , 247 , 248 , 249 , 250 , 251 , 252 ], relatively basic biochemistry [ 253 , 254 ,…”

Confined Space Nanoarchitectonics for Dynamic Functions and Molecular Machines

“…In fact, the research papers advocating nanoarchitectonics have a very wide range of material processes and applications. In basic fields, nanoarchitectonics can be applied to material synthesis [135][136][137][138][139][140][141], microstructure control [142][143][144][145][146][147][148][149], the elucidation of physical phenomena [150][151][152][153][154][155], and basic life science research [156][157][158][159][160][161]. In the applicationoriented fields, there are reports of applications in catalysis [162][163][164][165][166][167], sensors [168][169][170][171][172], devices [173][174][175][176][177][178], energy generation [179][180][181...…”