Superhydrophobic surfaces with fluorinated cellulose nanofiber assemblies for oil–water separation

A Cellulose nanofiber (CNF) is an amazing nanomaterial produced from ubiquitous sources with outstanding mechanical, chemical, and barrier properties. This report describes facile functionalization of CNF with trichloro(1 H ,1 H ,2 H ,2 H -heptadecafluorodecyl)silane (THFS). The paste form CNF was s...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:RSC advances Ročník 7; číslo 59; s. 37168 - 37174
Hlavní autoři: Bashar, M. Mahbubul, Zhu, Huie, Yamamoto, Shunsuke, Mitsuishi, Masaya
Médium: Journal Article
Jazyk:angličtina
Vydáno: 01.01.2017
Témata:
cellulose
hexane
hydrophobicity
nanofibers
oils
seawater
silane
solvents
steel
thermal stability
ISSN:2046-2069, 2046-2069
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Popis
Shrnutí:A Cellulose nanofiber (CNF) is an amazing nanomaterial produced from ubiquitous sources with outstanding mechanical, chemical, and barrier properties. This report describes facile functionalization of CNF with trichloro(1 H ,1 H ,2 H ,2 H -heptadecafluorodecyl)silane (THFS). The paste form CNF was solvent exchanged from initial water to AK-225 (a mixture of 3,3-dichloro-1,1,1,2,2-pentafluoropropane and 1,3-dichloro-1,1,2,2,3-pentafluoropuropane) before surface modification with THFS. The modified CNFs were dispersed uniformly in AK-225. The CNF film, which was prepared using simple drop casting, showed a superhydrophobic surface with a water contact angle of 160° and oleophilicity with a hexane contact angle of less than 35°. The modified CNF assembly is thermally stable, optically transparent and resistant to corrosive environment (acidic, basic and seawater solutions). The separation of oil and water mixtures was demonstrated using steel mesh coated with modified CNF. Separation efficiency greater than 99% was achieved by simple gravitational force for hydrocarbons and organic solvents. The as-prepared mesh can be used repeatedly more than 50 times with the same efficiency as the initial state.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:2046-2069
2046-2069
DOI:10.1039/C7RA06316D