Layer-by-layer assembled multilayer films of titanate nanotubes, Ag- or Au-loaded nanotubes, and nanotubes/nanosheets with polycations

被引：191

作者：

Ma, RZ ^{[1
]}

Sasaki, T ^{[1
]}

Bando, Y ^{[1
]}

机构：

[1] NIMS, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2004年 / 126卷 / 33期

关键词：

D O I：

10.1021/ja048855p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Aqueous suspensions of hydrothermally synthesized titanate nanotubes and poly(diallyldimethylammoniurn chloride) (PDDA) have been employed to fabricate multilayer films on various substrates in a layer-by-layer fashion. Atomic force microscopy displays the dense coverage of the substrate surface by the nanotubes. UV-vis absorption spectroscopy confirms the consecutive growth of PDDA/nanotube layer pairs. Single crystalline Ag and Au nanoparticles with narrow size distribution spatially correlating with the nanotubes have been obtained by treating the nanotubes with AgNO3 or HAuCl4 aqueous solution followed by chemical reduction. The noble metal nanoparticles show a strong surface plasmon absorption band. A multilayer film construction of the noble-metal-loaded nanotubes has also been achieved. This process has been further extended to the heteroassembly of nanotubes/nanosheets in different layer sequences.

引用

页码：10382 / 10388

页数：7

共 38 条

[1] Formation of titania nanotubes with high photo-catalytic activity [J].