Pt3Te4 Nanoparticles from Tellurium Nanowires

被引：21

作者：

Samal, A. K. ^{[1
]}

Pradeep, T. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem, DST Unit Nanosci DST UNS, Madras 600036, Tamil Nadu, India

来源：

LANGMUIR | 2010年 / 26卷 / 24期

关键词：

ENHANCED RAMAN-SCATTERING; ONE-DIMENSIONAL NANOSTRUCTURES; THERMOELECTRIC TRANSPORT-PROPERTIES; TRANSITION-METALS; RHODAMINE; 6G; PT-NI; SURFACE; PLATINUM; CDSE; CDTE;

D O I：

10.1021/la103466j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the synthesis of platinum telluride nanoparticles (Pt3Te4 NPs) in the solution phase at room temperature using a template-assisted method. The dendrimeric aggregates formed are composed of several small units of Pt3Te4 NPs of similar to 4 nm diameter. Tellurium nanowires (Te NWs) are used as the template and the reducing agent in the growth of NPs which occurs due to the galvanic replacement reaction between Te NWs and PtCl62-. Surface-enhanced Raman scattering (SERS) of the dispersed Pt3Te4 NPs was studied using crystal violet (CV) as the analyte. SERS sensitivity up to 10(-8) M of CV was observed. The Raman enhancement factor (EF) of adsorbed CV on NP aggregates was calculated to be 1.74 x 10(5). The catalytic ability of the as-synthesized Pt3Te4 NPs for the reduction of 4-nitrophenol (4-NP) was studied.

引用

页码：19136 / 19141

页数：6

共 67 条

[1] X-RAY PHOTOEMISSION STUDIES OF TELLURIUM AND SOME OF ITS COMPOUNDS [J].

BAHL, MK ;

WATSON, RL ;

IRGOLIC, KJ .

JOURNAL OF CHEMICAL PHYSICS, 1977, 66 (12) :5526-5535

[2] Axial-junction nanowires of Ag2Te-Ag as a memory element [J].

Batabyal, Sudip K. ;

Vittal, Jagadese J. .

CHEMISTRY OF MATERIALS, 2008, 20 (18) :5845-5850

[3] Monodisperse Platinum Nanospheres with Adjustable Diameters from 10 to 100 nm: Synthesis and Distinct Optical Properties [J].

Bigall, Nadja C. ;

Haertling, Thomas ;

Klose, Markus ;

Simon, Paul ;

Eng, Lukas M. ;

Eychmueller, Alexander .

NANO LETTERS, 2008, 8 (12) :4588-4592

[4]

Chang R.K., 1982, Surface Enhanced Raman Scattering

[5] Platinum-Based Nanostructured Materials: Synthesis, Properties, and Applications [J].

Chen, Aicheng ;

Holt-Hindle, Peter .

CHEMICAL REVIEWS, 2010, 110 (06) :3767-3804

[6] Formaldehyde yields from methanol electrochemical oxidation on carbon-supported platinum catalysts [J].

Childers, CL ;

Huang, HL ;

Korzeniewski, C .

LANGMUIR, 1999, 15 (03) :786-789

[7] Molecular electronics - Nanowires begin to shine [J].

Cobden, DH .

NATURE, 2001, 409 (6816) :32-33

[8] Nanowire nanosensors for highly sensitive and selective detection of biological and chemical species [J].

Cui, Y ;

Wei, QQ ;

Park, HK ;

Lieber, CM .

SCIENCE, 2001, 293 (5533) :1289-1292

[9] The new face of catalysis [J].

Feldheim, Daniel L. .

SCIENCE, 2007, 316 (5825) :699-700

[10] Electrochemical synthesis of CdTe nanocrystal/polypyrrole composites for optoelectronic applications [J].

Gaponik, NP ;

Talapin, DV ;

Rogach, AL ;

Eychmüller, A .

JOURNAL OF MATERIALS CHEMISTRY, 2000, 10 (09) :2163-2166

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