title: Superhydrophobic activated carbon-coated sponges for separation and absorption.
abstract: Highly porous activated carbon with a large surface area and pore volume was synthesized by KOH activation using commercially available activated carbon as a precursor. By modification with polydimethylsiloxane (PDMS), highly porous activated carbon showed superhydrophobicity with a water contact angle of 163.6°. The changes in wettability of PDMS- treated highly porous activated carbon were attributed to the deposition of a low-surface-energy silicon coating onto activated carbon (confirmed by X-ray photoelectron spectroscopy), which had microporous characteristics (confirmed by XRD, SEM, and TEM analyses). Using an easy dip-coating method, superhydrophobic activated carbon-coated sponges were also fabricated; those exhibited excellent absorption selectivity for the removal of a wide range of organics and oils from water, and also recyclability, thus showing great potential as efficient absorbents for the large-scale removal of organic contaminants or oil spills from water.
authors: State Key Laboratory of Gansu Advanced Nonferrous Metal Materials, Key Laboratory of Nonferrous Metal Alloys and Processing, Ministry of Education, College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China.
authors: Hanxue
authors: H
authors: Sun
authors: An
authors: A
authors: Li
authors: Zhaoqi
authors: Z
authors: Zhu
authors: Weidong
authors: W
authors: Liang
authors: Xinhong
authors: X
authors: Zhao
authors: Peiqing
authors: P
authors: La
authors: Weiqiao
authors: W
authors: Deng
mesh_terms: D000042:Absorption; D002244:Carbon / Q000737:chemistry*; D005591:Chemical Fractionation / Q000379:methods*; D004129:Dimethylpolysiloxanes / Q000737:chemistry; D005579:Fossil Fuels; D057927:Hydrophobic and Hydrophilic Interactions; D016062:Porosity; D013499:Surface Properties; D014867:Water / Q000737:chemistry
chemical_list: D004129:Dimethylpolysiloxanes; D005579:Fossil Fuels; D014867:Water; C013830:baysilon; D002244:Carbon