Synthesis of silica - Gold nanocomposites and their porous nanoparticles by an in-situ approach

Ashavani Kumar; Victor L. Pushparaj; Saravanababu Murugesan; Gunaranjan Viswanathan; Rohit Nalamasu; Robert J. Linhardt; Omkaram Nalamasu; Pulickel M. Ajayan

doi:10.1021/la060869g

Synthesis of silica - Gold nanocomposites and their porous nanoparticles by an in-situ approach

Ashavani Kumar, Victor L. Pushparaj, Saravanababu Murugesan, Gunaranjan Viswanathan, Rohit Nalamasu, Robert J. Linhardt, Omkaram Nalamasu, Pulickel M. Ajayan

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

We demonstrate the one-step synthesis of a silica - gold nanocomposite by simultaneous hydrolysis and reduction of gold chloride. The aminophenyl group was used as a reducing agent, and the trimethoxy silane group acts a precursor for the formation of silica. The porous gold nanoparticles were formed by etching out the silica - gold nanocomposite by hydrofluoric acid. The electron diffraction of porous gold nanoparticles showed that the particle are polycrystalline with FCC structure. The silica - gold nanocomposite exhibited nonlinear current - voltage behavior, and the porous gold nanoparticles displayed linear current - voltage behavior.

Original language	English
Pages (from-to)	8631-8634
Number of pages	4
Journal	Langmuir
Volume	22
Issue number	21
DOIs	https://doi.org/10.1021/la060869g
State	Published - 10 Oct 2006
Externally published	Yes

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title = "Synthesis of silica - Gold nanocomposites and their porous nanoparticles by an in-situ approach",

abstract = "We demonstrate the one-step synthesis of a silica - gold nanocomposite by simultaneous hydrolysis and reduction of gold chloride. The aminophenyl group was used as a reducing agent, and the trimethoxy silane group acts a precursor for the formation of silica. The porous gold nanoparticles were formed by etching out the silica - gold nanocomposite by hydrofluoric acid. The electron diffraction of porous gold nanoparticles showed that the particle are polycrystalline with FCC structure. The silica - gold nanocomposite exhibited nonlinear current - voltage behavior, and the porous gold nanoparticles displayed linear current - voltage behavior.",

author = "Ashavani Kumar and Pushparaj, {Victor L.} and Saravanababu Murugesan and Gunaranjan Viswanathan and Rohit Nalamasu and Linhardt, {Robert J.} and Omkaram Nalamasu and Ajayan, {Pulickel M.}",

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AU - Kumar, Ashavani

AU - Pushparaj, Victor L.

AU - Murugesan, Saravanababu

AU - Viswanathan, Gunaranjan

AU - Nalamasu, Rohit

AU - Linhardt, Robert J.

AU - Nalamasu, Omkaram

AU - Ajayan, Pulickel M.

PY - 2006/10/10

Y1 - 2006/10/10

N2 - We demonstrate the one-step synthesis of a silica - gold nanocomposite by simultaneous hydrolysis and reduction of gold chloride. The aminophenyl group was used as a reducing agent, and the trimethoxy silane group acts a precursor for the formation of silica. The porous gold nanoparticles were formed by etching out the silica - gold nanocomposite by hydrofluoric acid. The electron diffraction of porous gold nanoparticles showed that the particle are polycrystalline with FCC structure. The silica - gold nanocomposite exhibited nonlinear current - voltage behavior, and the porous gold nanoparticles displayed linear current - voltage behavior.

AB - We demonstrate the one-step synthesis of a silica - gold nanocomposite by simultaneous hydrolysis and reduction of gold chloride. The aminophenyl group was used as a reducing agent, and the trimethoxy silane group acts a precursor for the formation of silica. The porous gold nanoparticles were formed by etching out the silica - gold nanocomposite by hydrofluoric acid. The electron diffraction of porous gold nanoparticles showed that the particle are polycrystalline with FCC structure. The silica - gold nanocomposite exhibited nonlinear current - voltage behavior, and the porous gold nanoparticles displayed linear current - voltage behavior.

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U2 - 10.1021/la060869g

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AN - SCOPUS:33750338770

SN - 0743-7463

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SP - 8631

EP - 8634

JO - Langmuir

JF - Langmuir

IS - 21

ER -

Synthesis of silica - Gold nanocomposites and their porous nanoparticles by an in-situ approach

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