Layer-by-Layer Assembly of TaO3 Nanosheet/Polycation Composite Nanostructures: Multilayer Film, Hollow Sphere, and Its Photocatalytic Activity for Hydrogen Evolution

被引：77

作者：

Huang, Jianhua ^{[1
,2
]}

Ma, Renzhi ^{[1
]}

Ebina, Yasuo ^{[1
]}

Fukuda, Katsutoshi ^{[1
]}

Takada, Kazunori

Sasaki, Takayoshi ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton MANA, Tsukuba, Ibaraki 3050044, Japan

[2] Zhejiang Sci Tech Univ, Dept Chem, Hangzhou 310018, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2010年 / 22卷 / 08期

基金：

日本科学技术振兴机构;

关键词：

MESOPOROUS TANTALUM OXIDE; NANOSHEET CRYSTALLITES; TITANIA NANOSHEETS; MANGANESE OXIDE; DELAMINATION; INTERCALATION; EXFOLIATION; FABRICATION; MONTMORILLONITE; SUSPENSION;

D O I：

10.1021/cm903733s

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Multilayer composite films comprising of TaO3 nanosheet crystallites and poly(diallyldimethylammonium chloride) (PDDA) were assembled via layer-by-layer sequential adsorption Exposure of the resulting films to UV light promoted photocatalytic decomposition of PDDA in the nanoshcet gallery to yield inorganic films. Novel hollow microspheres of Ta2O5 were fabricated by the deposition of a PDDA/TaO3 multilayer nanoshell on polystyrene (PS) beads and the subsequent removal of the PS core and PDDA layers via calcination. The hollow microspheres showed photocatalytic properties effective for hydrogen evolution from an aqueous methanol solution The shape control into hollow microsphere greatly enhanced the photocatalytic activity The results highlight the role of the surface area and crystallinity of the catalyst in photocatalytic activity.

引用

页码：2582 / 2587

页数：6

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