Polymeric Micelle Assembly for the Direct Synthesis of Platinum-Decorated Mesoporous TiO2 toward Highly Selective Sensing of Acetaldehyde

被引：46

作者：

Bastakoti, Bishnu Prasad ^{[1
]}

Torad, Nagy L. ^{[1
,2
]}

Yamauchi, Yusuke ^{[1
,2
,3
]}

机构：

[1] Natl Inst Mat Sci, World Premier Int WPI Res Ctr Mat Nanoarchitecton, Tsukuba, Ibaraki 3050044, Japan

[2] Waseda Univ, Fac Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan

[3] Japan Sci & Technol Agcy JST, Precursory Res Embryon Sci & Technol PRESTO, Kawaguchi, Saitama 3320012, Japan

来源：

ACS APPLIED MATERIALS & INTERFACES | 2014年 / 6卷 / 02期

基金：

日本学术振兴会;

关键词：

micelle assembly; mesoporous TiO2; platinum; sensor; acetaldehyde; quartz crystal microbalance; DIRECT CARBONIZATION; METAL PARTICLES; NANOPARTICLES; SPECTROSCOPY; GROWTH;

D O I：

10.1021/am4039954

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Platinum-decorated mesoporous TiO2 is synthesized by the self-assembly of polymeric micelles of an asymmetric triblock copolymer with three chemically distinct units in an acidic tetrahydrofuran solution. The strong hydrophobic interaction of platinum(II) 2,4-pentanedionate with a polystyrene core and electrostatic interaction of titanium tetraisopropoxide with a poly(vinylpyridine) shell enable us to directly synthesize crystalline mesoporous TiO2 with platinum nanoparticles. A thermally stable block copolymer prevents collapse of the ordered mesostructure during the calcination process. The platinum source is in situ reduced to form the platinum nanoparticles on the TiO2 walls. The sensing performance of platinum-decorated mesoporous TiO2 is studied in detail using a quartz crystal microbalance technique, and it is found that it shows excellent sensitivity for acetaldehyde.

引用

页码：854 / 860

页数：7

共 53 条

[1] A sensor of alcohol vapours based on thin polyaniline base film and quartz crystal microbalance [J].