Bulletin of the Korean Chemical Society | |
Porous Silica Particles as Oil Absorbents: Comparison of Meso‐, Macro‐, and Meso/Macro‐Structures | |
Dong Chan Lim3  Dae Han Kim3  Sang Wook Han3  Jongwoo Moon3  Geun Jeong3  Dae Kim3  Kwang‐5  Myung‐5  Eunmi Hong5  Young Dok Kim5  Eun Ji Park5  Youn Kyoung Cho5  | |
[1] 010 Republic of Korea;600 Republic of Korea;746 Republic of Korea;Biorefinery Research Group Korea Research Institute of Chemical Technology Daejeon 305‐Department of Chemistry Sungkyunkwan University Suwon 440‐Surface Technology Division Korea Institute of Materials Science (KIMS) Changwon 641‐ | |
关键词: Silica; Polydimethylsiloxane; Oil adsorbent; Weight gain; Porosity; Superhydrophobic; | |
DOI : 10.1002/bkcs.10330 | |
学科分类:化学(综合) | |
来源: Korean Chemical Society | |
【 摘 要 】
Silica particles with three different pore structures were synthesized, consisting of onlyâmesoâ, onlyâmacroâ, and both meso/macroâpores. The mesoâpores were approximately 3â30 nm in diameter, whereas the macroâpores were larger than 500 nm. By using chemical vapor deposition of polydimethylsiloxane (PDMS) on porous silica, the surfaces of the silica became completely hydrophobic. The surfaces on which the PDMSâcoated silica particles were distributed showed water contact angles close to 170° and the particles floated perfectly on water. The silica with both mesoâ and macroâpores showed a much higher oil absorption capacity (2.5â3 times higher capacity) than the other samples with either only mesoâ or macroâpores. The superior oil absorption capacity of the meso/macroâporous silica was primarily attributed to the extraordinarily high porosity.
【 授权许可】
Unknown
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