Growth pathways of silver nanoplates in kinetically controlled synthesis: Bimodal versus unimodal growth

Mun Ho Kim, Dong Ki Yoon, Sang Hyuk Im

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Silver nanoplates were synthesized by reducing silver nitrate (AgNO3) with poly(vinyl pyrrolidone) (PVP) in N,N-dimethylformamide (DMF). In the synthesis, the hydroxyl end groups of the PVP served as a mild reductant in the kinetically controlled synthesis, and DMF played a critical role as a reaction medium (solvent) for the formation and growth of the nanoplates. In the present study, the growth of the nanoplates proceeded along different pathways, as evidenced by variations in the shape evolution, depending on the PVP to AgNO3 weight ratio. When the concentration of PVP is below a certain value, a large number of small nanoplates with different sizes were initially formed and then fused together along their lateral planes, leading to the formation of a secondary large nanoplate (bimodal particle growth). When the PVP concentration became higher and the surface capping was enhanced, the small nanoplates continued to grow individually without fusing (unimodal particle growth). This study not only advanced our understanding of the role played by PVP in the kinetically controlled synthetic reaction but also allows us to produce Ag nanoplates with a high aspect ratio in a single step.

Original languageEnglish
Pages (from-to)14266-14272
Number of pages7
JournalRSC Advances
Volume5
Issue number19
DOIs
Publication statusPublished - 2015 Jan 1
Externally publishedYes

Fingerprint

Pyrrolidinones
Silver
Dimethylformamide
Silver Nitrate
Aspect ratio
Nitrates
Reducing Agents
Hydroxyl Radical

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Growth pathways of silver nanoplates in kinetically controlled synthesis : Bimodal versus unimodal growth. / Kim, Mun Ho; Yoon, Dong Ki; Im, Sang Hyuk.

In: RSC Advances, Vol. 5, No. 19, 01.01.2015, p. 14266-14272.

Research output: Contribution to journalArticle

@article{a2162ef0a62b4c779d67c523d1b2398c,
title = "Growth pathways of silver nanoplates in kinetically controlled synthesis: Bimodal versus unimodal growth",
abstract = "Silver nanoplates were synthesized by reducing silver nitrate (AgNO3) with poly(vinyl pyrrolidone) (PVP) in N,N-dimethylformamide (DMF). In the synthesis, the hydroxyl end groups of the PVP served as a mild reductant in the kinetically controlled synthesis, and DMF played a critical role as a reaction medium (solvent) for the formation and growth of the nanoplates. In the present study, the growth of the nanoplates proceeded along different pathways, as evidenced by variations in the shape evolution, depending on the PVP to AgNO3 weight ratio. When the concentration of PVP is below a certain value, a large number of small nanoplates with different sizes were initially formed and then fused together along their lateral planes, leading to the formation of a secondary large nanoplate (bimodal particle growth). When the PVP concentration became higher and the surface capping was enhanced, the small nanoplates continued to grow individually without fusing (unimodal particle growth). This study not only advanced our understanding of the role played by PVP in the kinetically controlled synthetic reaction but also allows us to produce Ag nanoplates with a high aspect ratio in a single step.",
author = "Kim, {Mun Ho} and Yoon, {Dong Ki} and Im, {Sang Hyuk}",
year = "2015",
month = "1",
day = "1",
doi = "10.1039/c4ra12818d",
language = "English",
volume = "5",
pages = "14266--14272",
journal = "RSC Advances",
issn = "2046-2069",
publisher = "Royal Society of Chemistry",
number = "19",

}

TY - JOUR

T1 - Growth pathways of silver nanoplates in kinetically controlled synthesis

T2 - Bimodal versus unimodal growth

AU - Kim, Mun Ho

AU - Yoon, Dong Ki

AU - Im, Sang Hyuk

PY - 2015/1/1

Y1 - 2015/1/1

N2 - Silver nanoplates were synthesized by reducing silver nitrate (AgNO3) with poly(vinyl pyrrolidone) (PVP) in N,N-dimethylformamide (DMF). In the synthesis, the hydroxyl end groups of the PVP served as a mild reductant in the kinetically controlled synthesis, and DMF played a critical role as a reaction medium (solvent) for the formation and growth of the nanoplates. In the present study, the growth of the nanoplates proceeded along different pathways, as evidenced by variations in the shape evolution, depending on the PVP to AgNO3 weight ratio. When the concentration of PVP is below a certain value, a large number of small nanoplates with different sizes were initially formed and then fused together along their lateral planes, leading to the formation of a secondary large nanoplate (bimodal particle growth). When the PVP concentration became higher and the surface capping was enhanced, the small nanoplates continued to grow individually without fusing (unimodal particle growth). This study not only advanced our understanding of the role played by PVP in the kinetically controlled synthetic reaction but also allows us to produce Ag nanoplates with a high aspect ratio in a single step.

AB - Silver nanoplates were synthesized by reducing silver nitrate (AgNO3) with poly(vinyl pyrrolidone) (PVP) in N,N-dimethylformamide (DMF). In the synthesis, the hydroxyl end groups of the PVP served as a mild reductant in the kinetically controlled synthesis, and DMF played a critical role as a reaction medium (solvent) for the formation and growth of the nanoplates. In the present study, the growth of the nanoplates proceeded along different pathways, as evidenced by variations in the shape evolution, depending on the PVP to AgNO3 weight ratio. When the concentration of PVP is below a certain value, a large number of small nanoplates with different sizes were initially formed and then fused together along their lateral planes, leading to the formation of a secondary large nanoplate (bimodal particle growth). When the PVP concentration became higher and the surface capping was enhanced, the small nanoplates continued to grow individually without fusing (unimodal particle growth). This study not only advanced our understanding of the role played by PVP in the kinetically controlled synthetic reaction but also allows us to produce Ag nanoplates with a high aspect ratio in a single step.

UR - http://www.scopus.com/inward/record.url?scp=84922641740&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84922641740&partnerID=8YFLogxK

U2 - 10.1039/c4ra12818d

DO - 10.1039/c4ra12818d

M3 - Article

AN - SCOPUS:84922641740

VL - 5

SP - 14266

EP - 14272

JO - RSC Advances

JF - RSC Advances

SN - 2046-2069

IS - 19

ER -