Direct observation of amphiphilic silica particles assembled at an oil-water interface

被引：6

作者：

Ikeda, S

Takahara, YK

Ishino, S

Matsumura, M

Ohtani, B

机构：

[1] Osaka Univ, Res Ctr Solar Energy Chem, Toyonaka, Osaka 5608531, Japan

[2] Hokkaido Univ, Catalysis Res Ctr, Sapporo, Hokkaido 0010021, Japan

来源：

CHEMISTRY LETTERS | 2005年 / 34卷 / 10期

关键词：

D O I：

10.1246/cl.2005.1386

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The location of amphiphilic silica particles, on which have both hydrophobic and hydrophilic surfaces, at a n-decane-water interface was investigated. By scanning electron microscopy observation of the particles fixed at the interface with a curable poly(dimethylsiloxane), we found that each hemisphere of a amphiphilic particle are immersed in the oil or aqueous phase.

引用

收藏

页码：1386 / 1387

页数：2

相关论文

共 16 条

[1] Emulsions stabilised solely by colloidal particles [J].

Aveyard, R ;

Binks, BP ;

Clint, JH .

ADVANCES IN COLLOID AND INTERFACE SCIENCE, 2003, 100 :503-546

[2] Catastrophic phase inversion of water-in-oil emulsions stabilized by hydrophobic silica [J].

Binks, BP ;

Lumsdon, SO .

LANGMUIR, 2000, 16 (06) :2539-2547

[3] Particles adsorbed at the oil-water interface: A theoretical comparison between spheres of uniform wettability and "Janus" particles [J].

Binks, BP ;

Fletcher, PDI .

LANGMUIR, 2001, 17 (16) :4708-4710

[4]

BRANDRISS S, 1993, LANGMUIR, V9, P123

[5] Contact angles of colloid silica and gold particles at air-water and oil-water interfaces determined with the gel trapping technique [J].

Cayre, OJ ;

Paunov, VN .

LANGMUIR, 2004, 20 (22) :9594-9599

[6]

FINKLE AL, 1968, INVEST UROL, V6, P26

[7] Asymmetrically modified titanium(IV) oxide particles having both hydrophobic and hydrophilic parts of their surfaces for liquid-liquid dual-phase photocatalytic reactions [J].

Ikeda, S ;

Kowata, Y ;

Ikeue, K ;

Matsumura, M ;

Ohtani, B .

APPLIED CATALYSIS A-GENERAL, 2004, 265 (01) :69-74

[8] Direct observation of bimodal amphiphilic surface structures of zeolite particles for a novel liquid-liquid phase boundary catalysis [J].

Ikeda, S ;

Nur, H ;

Sawadaishi, T ;

Ijiro, K ;

Shimomura, M ;

Ohtani, B .

LANGMUIR, 2001, 17 (26) :7976-7979

[9] Elucidation of the local structure of active titanium(IV) sites on silica-based phase-boundary catalysts for alkene epoxidation with aqueous hydrogen peroxide [J].

Ikeue, K ;

Ikeda, S ;

Watanabe, A ;

Ohtani, B .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2004, 6 (09) :2523-2528

[10] Phase-boundary catalysis of alkene epoxidation with aqueous hydrogen peroxide using amphiphilic zeolite particles loaded with titanium oxide [J].

Nur, H ;

Ikeda, S ;

Ohtani, B .

JOURNAL OF CATALYSIS, 2001, 204 (02) :402-408