Synthesis and characterization of biopolymer agar mediated gold nanoparticles

Jong Whan Rhim; Paulraj Kanmani

doi:10.1016/j.matlet.2014.11.069

Synthesis and characterization of biopolymer agar mediated gold nanoparticles

Jong Whan Rhim
, Paulraj Kanmani

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

13 Citations (Scopus)

Abstract

Gold nanoparticles (AuNPs) were prepared by reducing AuCl₃ using agar as a reducing and stabilizing agent. The formation of AuNPs was evidenced by strong absorption peak at 534-543 nm caused by the characteristic surface plasmon resonance (SPR) of gold nanoparticle. Height of SPR peak increased with increase in the concentration of AuCl_3. The AuNPs observed with TEM were spherical in shape with particle size of 2-20 nm. The presence of elemental gold was also confirmed by EDX analysis. The XRD pattern of the AuNPs exhibited four characteristic peaks of gold at 38.2, 44.4, 64.6, and 77.8° of 2θ corresponding to the face centered cubic (fcc) structure of crystalline AuNPs with (1 1 1), (2 0 0), (2 2 0), and (3 1 1) planes of gold, respectively. These results confirmed that natural biopolymer agar had potential to be used as a reducing and stabilizing agent for AuNPs.

Original language	English
Pages (from-to)	114-117
Number of pages	4
Journal	Materials Letters
Volume	141
DOIs	https://doi.org/10.1016/j.matlet.2014.11.069
Publication status	Published - 15 Feb 2015

Bibliographical note

Publisher Copyright:
© 2014 Elsevier B.V. All rights reserved.

Keywords

Agar
AuNPs
Biopolymer
Surface plasmon resonance

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10.1016/j.matlet.2014.11.069

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title = "Synthesis and characterization of biopolymer agar mediated gold nanoparticles",

abstract = "Gold nanoparticles (AuNPs) were prepared by reducing AuCl3 using agar as a reducing and stabilizing agent. The formation of AuNPs was evidenced by strong absorption peak at 534-543 nm caused by the characteristic surface plasmon resonance (SPR) of gold nanoparticle. Height of SPR peak increased with increase in the concentration of AuCl3. The AuNPs observed with TEM were spherical in shape with particle size of 2-20 nm. The presence of elemental gold was also confirmed by EDX analysis. The XRD pattern of the AuNPs exhibited four characteristic peaks of gold at 38.2, 44.4, 64.6, and 77.8° of 2θ corresponding to the face centered cubic (fcc) structure of crystalline AuNPs with (1 1 1), (2 0 0), (2 2 0), and (3 1 1) planes of gold, respectively. These results confirmed that natural biopolymer agar had potential to be used as a reducing and stabilizing agent for AuNPs.",

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T1 - Synthesis and characterization of biopolymer agar mediated gold nanoparticles

AU - Rhim, Jong Whan

AU - Kanmani, Paulraj

PY - 2015/2/15

Y1 - 2015/2/15

N2 - Gold nanoparticles (AuNPs) were prepared by reducing AuCl3 using agar as a reducing and stabilizing agent. The formation of AuNPs was evidenced by strong absorption peak at 534-543 nm caused by the characteristic surface plasmon resonance (SPR) of gold nanoparticle. Height of SPR peak increased with increase in the concentration of AuCl3. The AuNPs observed with TEM were spherical in shape with particle size of 2-20 nm. The presence of elemental gold was also confirmed by EDX analysis. The XRD pattern of the AuNPs exhibited four characteristic peaks of gold at 38.2, 44.4, 64.6, and 77.8° of 2θ corresponding to the face centered cubic (fcc) structure of crystalline AuNPs with (1 1 1), (2 0 0), (2 2 0), and (3 1 1) planes of gold, respectively. These results confirmed that natural biopolymer agar had potential to be used as a reducing and stabilizing agent for AuNPs.

AB - Gold nanoparticles (AuNPs) were prepared by reducing AuCl3 using agar as a reducing and stabilizing agent. The formation of AuNPs was evidenced by strong absorption peak at 534-543 nm caused by the characteristic surface plasmon resonance (SPR) of gold nanoparticle. Height of SPR peak increased with increase in the concentration of AuCl3. The AuNPs observed with TEM were spherical in shape with particle size of 2-20 nm. The presence of elemental gold was also confirmed by EDX analysis. The XRD pattern of the AuNPs exhibited four characteristic peaks of gold at 38.2, 44.4, 64.6, and 77.8° of 2θ corresponding to the face centered cubic (fcc) structure of crystalline AuNPs with (1 1 1), (2 0 0), (2 2 0), and (3 1 1) planes of gold, respectively. These results confirmed that natural biopolymer agar had potential to be used as a reducing and stabilizing agent for AuNPs.

KW - Agar

KW - AuNPs

KW - Biopolymer

KW - Surface plasmon resonance

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DO - 10.1016/j.matlet.2014.11.069

M3 - Article

AN - SCOPUS:84919360155

SN - 0167-577X

VL - 141

SP - 114

EP - 117

JO - Materials Letters

JF - Materials Letters

ER -

Synthesis and characterization of biopolymer agar mediated gold nanoparticles

Abstract

Bibliographical note

Keywords

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