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Title: Kinetically Controlled Synthesis of Triangular and HexagonalNanoplates of Palladium and Their SPR/SERS Properties

Abstract

The rapid reduction of Na2PdCl4 by ethylene glycol in thepresence of poly(vinyl pyrrolidone) (PVP) has recently been demonstratedas a convenient method of generating Pd cubooctahedra and twinnednanoparticles. Here we describe a new procedure where Pd triangular orhexagonal nanoplates could be selectively synthesized by manipulating thereduction kinetics of the polyol process. More specifically, thereduction rate was substantially reduced through the introduction ofFe(III) species and the O2/Cl- pair, two wet etchants for Pd(0). Theetching power of the O2/Cl- pair could be further enhanced by adding anacid to lower the pH of the reaction solution. Unlike the previouslyreported synthesis of Ag and Au nanoplates, light was found to have noindispensable role in the formation of Pd nanoplates. Both triangular andhexagonal nanoplates of Pd exhibited surface plasmon resonance (SPR)peaks in the visible region, and their positions matched with the resultsof discrete dipole approximation (DDA) calculation. Thanks to their sharpcorners and edges, these Pd nanoplates could serve as active substratesfor surface-enhanced Raman scattering (SERS).

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
COLLABORATION - U.Washington
OSTI Identifier:
918625
Report Number(s):
LBNL-61647
Journal ID: ISSN 0002-7863; JACSAT; R&D Project: 50MF60; TRN: US200819%%358
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Journal of the American Chemical Society
Additional Journal Information:
Journal Volume: 127; Journal Issue: 48; Related Information: Journal Publication Date: 11/10/2005; Journal ID: ISSN 0002-7863
Country of Publication:
United States
Language:
English
Subject:
36; APPROXIMATIONS; DIPOLES; ETCHING; GLYCOLS; KINETICS; PALLADIUM; PLASMONS; RESONANCE; SCATTERING; SUBSTRATES; SYNTHESIS

Citation Formats

Xiong, Yujie, McLellan, Joseph M, Chen, Jingyi, Yin, Yadong, Li, Zhi-Yuan, and Xia, Younan. Kinetically Controlled Synthesis of Triangular and HexagonalNanoplates of Palladium and Their SPR/SERS Properties. United States: N. p., 2006. Web.
Xiong, Yujie, McLellan, Joseph M, Chen, Jingyi, Yin, Yadong, Li, Zhi-Yuan, & Xia, Younan. Kinetically Controlled Synthesis of Triangular and HexagonalNanoplates of Palladium and Their SPR/SERS Properties. United States.
Xiong, Yujie, McLellan, Joseph M, Chen, Jingyi, Yin, Yadong, Li, Zhi-Yuan, and Xia, Younan. Mon . "Kinetically Controlled Synthesis of Triangular and HexagonalNanoplates of Palladium and Their SPR/SERS Properties". United States.
@article{osti_918625,
title = {Kinetically Controlled Synthesis of Triangular and HexagonalNanoplates of Palladium and Their SPR/SERS Properties},
author = {Xiong, Yujie and McLellan, Joseph M and Chen, Jingyi and Yin, Yadong and Li, Zhi-Yuan and Xia, Younan},
abstractNote = {The rapid reduction of Na2PdCl4 by ethylene glycol in thepresence of poly(vinyl pyrrolidone) (PVP) has recently been demonstratedas a convenient method of generating Pd cubooctahedra and twinnednanoparticles. Here we describe a new procedure where Pd triangular orhexagonal nanoplates could be selectively synthesized by manipulating thereduction kinetics of the polyol process. More specifically, thereduction rate was substantially reduced through the introduction ofFe(III) species and the O2/Cl- pair, two wet etchants for Pd(0). Theetching power of the O2/Cl- pair could be further enhanced by adding anacid to lower the pH of the reaction solution. Unlike the previouslyreported synthesis of Ag and Au nanoplates, light was found to have noindispensable role in the formation of Pd nanoplates. Both triangular andhexagonal nanoplates of Pd exhibited surface plasmon resonance (SPR)peaks in the visible region, and their positions matched with the resultsof discrete dipole approximation (DDA) calculation. Thanks to their sharpcorners and edges, these Pd nanoplates could serve as active substratesfor surface-enhanced Raman scattering (SERS).},
doi = {},
journal = {Journal of the American Chemical Society},
issn = {0002-7863},
number = 48,
volume = 127,
place = {United States},
year = {2006},
month = {8}
}