Preparation of metallodielectric composite particles with multishell structure

被引：47

作者：

Chen, Z ^{[1
]}

Wang, ZL ^{[1
]}

Zhan, P ^{[1
]}

Zhang, JH ^{[1
]}

Zhang, WY ^{[1
]}

Wang, HT ^{[1
]}

Ming, NB ^{[1
]}

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

来源：

LANGMUIR | 2004年 / 20卷 / 08期

关键词：

D O I：

10.1021/la035326a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this article, we demonstrated the synthesis of metallodielectric composite particles comprising a metal shell on a dielectric core and an outer coating of an insulating dielectric layer by depositing silver on silica supporting cores followed by coating of titania. A combination of surface reaction and surface seeding techniques is exploited for the formation of a complete silver shell on silica spheres. The additional outer coating of titania on silver shell particles is then performed by hydrolyzing tetra-n-butyl titanate in ethanol at room temperature. The morphologies of silver shells and titania coating are studied with electron microscopy, and their existences are confirmed with X-ray diffraction and energy-dispersive X-ray measurement.

引用

页码：3042 / 3046

页数：5

共 29 条

[1] ELECTRON DYNAMICS IN COPPER METALLIC NANOPARTICLES PROBED WITH FEMTOSECOND OPTICAL PULSES [J].

BIGOT, JY ;

MERLE, JC ;

CREGUT, O ;

DAUNOIS, A .

PHYSICAL REVIEW LETTERS, 1995, 75 (25) :4702-4705

[2] Seeding of colloidal Au nanoparticle solutions. 2. Improved control of particle size and shape [J].

Brown, KR ;

Walter, DG ;

Natan, MJ .

CHEMISTRY OF MATERIALS, 2000, 12 (02) :306-313

[3]

Caruso F, 2001, ADV MATER, V13, P1090, DOI 10.1002/1521-4095(200107)13:14<1090::AID-ADMA1090>3.0.CO

[4]

2-H

[5]

Dirix Y, 1999, ADV MATER, V11, P223, DOI 10.1002/(SICI)1521-4095(199903)11:3<223::AID-ADMA223>3.0.CO

[6]

2-J

[7] Colloidal metal deposition onto functionalized polystyrene microspheres [J].

Dokoutchaev, A ;

James, JT ;

Koene, SC ;

Pathak, S ;

Prakash, GKS ;

Thompson, ME .

CHEMISTRY OF MATERIALS, 1999, 11 (09) :2389-2399

[8] Tailoring the particle size of monodispersed colloidal gold [J].

Goia, DV ;

Matijevic, E .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1999, 146 (1-3) :139-152

[9] Metallodielectric colloidal core-shell particles for photonic applications [J].

Graf, C ;

van Blaaderen, A .

LANGMUIR, 2002, 18 (02) :524-534

[10] Multistep coating of thick titania layers on monodisperse silica nanospheres [J].

Guo, XC ;

Dong, P .

LANGMUIR, 1999, 15 (17) :5535-5540

← 1 2 3 →