Core-shell synthesis of a novel, spherical, mesoporous silica/platinum nanocomposite: Pt/PVP@MCM-41

被引：82

作者：

Lin, KJ ^{[1
]}

Chen, LJ ^{[1
]}

Prasad, MR ^{[1
]}

Cheng, CY ^{[1
]}

机构：

[1] Natl Chung Hsing Univ, Ctr Nanosci & Nanotechnol, Dept Chem, Taichung 402, Taiwan

来源：

ADVANCED MATERIALS | 2004年 / 16卷 / 20期

关键词：

D O I：

10.1002/adma.200400349

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A spherical, disordered, wormhole-like nanocomposite, consisting of 115 nm diameter MCM-41 particles containing 3 nm diameter Pt nanoparticles (see Figure), is described. A surfactant that stabilizes and prevents aggregation of the Pt nanoparticles during synthesis is removed by calcination, resulting in a high Pt catalytic surface area. Multiple cycles of cinnamic acid hydroglenation at room temperature demonstrate the potential of this reusable catalytic nanocomposite.

引用

页码：1845 / +

页数：6

共 22 条

[1] Ethylene hydrogenation over platinum nanoparticle array model catalysts fabricated by electron beam lithography: Determination of active metal surface area [J].

Grunes, J ;

Zhu, J ;

Anderson, EA ;

Somorjai, GA .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (44) :11463-11468

[2] Characterization of the morphology of Pt clusters incorporated in a KL zeolite by vapor phase and incipient wetness impregnation. Influence of Pt particle morphology on aromatization activity and deactivation [J].

Jacobs, G ;

Ghadiali, F ;

Pisanu, A ;

Borgna, A ;

Alvarez, WE ;

Resasco, DE .

APPLIED CATALYSIS A-GENERAL, 1999, 188 (1-2) :79-98

[3] Synthesis of nanosized gold-silica core-shell particles [J].

Liz-Marzan, LM ;

Giersig, M ;

Mulvaney, P .

LANGMUIR, 1996, 12 (18) :4329-4335

[4] Aerosol-assisted self-assembly of mesostructured spherical nanoparticles [J].

Lu, YF ;

Fan, HY ;

Stump, A ;

Ward, TL ;

Rieker, T ;

Brinker, CJ .

NATURE, 1999, 398 (6724) :223-226

[5]

Nooney RI, 2002, ADV MATER, V14, P529, DOI 10.1002/1521-4095(20020404)14:7<529::AID-ADMA529>3.0.CO

[6]

2-H

[7] A new nonsurfactant pathway to mesoporous silica materials based on tartaric acid in conjunction with metallic chloride [J].

Pang, JB ;

Qiu, KY ;

Wei, Y .

CHEMISTRY OF MATERIALS, 2001, 13 (07) :2361-2365

[8] Formation of PVP-protected metal nanoparticles in DMF [J].

Pastoriza-Santos, I ;

Liz-Marzán, LM .

LANGMUIR, 2002, 18 (07) :2888-2894

[9]

Roos C, 1999, ADV MATER, V11, P761

[10] Reduced transition metal colloids: A novel family of reusable catalysts? [J].

Roucoux, A ;

Schulz, J ;

Patin, H .

CHEMICAL REVIEWS, 2002, 102 (10) :3757-3778

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