A simple preparation technique for shape-controlled zinc oxide nanoparticles: Formation of narrow size-distributed nanorods using seeds in aqueous solutions

Tetsuo Kawano, Hiroaki Imai

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Various shapes of wurtzite-type ZnO nanoparticles were selectively produced in a simple aqueous system prepared by mixing ZnSO4 and NaOH solutions. Ellipsoidal nanoparticles were obtained by the addition of an alkaline agent into an acidic zinc solution (acidic route), while nanorods were grown by mixing a zinc precursor into an alkaline solution (basic route). The aspect ratio and size distribution of the nanorods grown through the basic routes were controlled by the addition of nanoparticles prepared by the acidic route as seeds. On the other hand, micrometric branching rods were obtained by dilution of the reaction solution in the basic routes. The morphological variation of ZnO particles is ascribed to the balance of the nucleation and crystal growth depending on the degree of the supersaturation. We successfully prepared narrow size-distributed rods with a nanometric width and a submicrometric length using the seed particles, because the presence of the seeds suppressed additional nucleation and then controlled the degree of the supersaturation for steady growth of the crystalline particles.

Original languageEnglish
Pages (from-to)130-135
Number of pages6
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume319
Issue number1-3
DOIs
Publication statusPublished - 2008 Apr 15

Fingerprint

Zinc Oxide
Zinc oxide
Nanorods
zinc oxides
nanorods
Seed
seeds
routes
Nanoparticles
aqueous solutions
nanoparticles
preparation
Supersaturation
Zinc
supersaturation
Nucleation
rods
zinc
nucleation
Crystallization

Keywords

  • Crystal growth
  • Nanoparticle
  • Nanorod
  • Seed
  • Zinc oxide

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

@article{10d0cc0dc78c4f7b985fb13430dc474d,
title = "A simple preparation technique for shape-controlled zinc oxide nanoparticles: Formation of narrow size-distributed nanorods using seeds in aqueous solutions",
abstract = "Various shapes of wurtzite-type ZnO nanoparticles were selectively produced in a simple aqueous system prepared by mixing ZnSO4 and NaOH solutions. Ellipsoidal nanoparticles were obtained by the addition of an alkaline agent into an acidic zinc solution (acidic route), while nanorods were grown by mixing a zinc precursor into an alkaline solution (basic route). The aspect ratio and size distribution of the nanorods grown through the basic routes were controlled by the addition of nanoparticles prepared by the acidic route as seeds. On the other hand, micrometric branching rods were obtained by dilution of the reaction solution in the basic routes. The morphological variation of ZnO particles is ascribed to the balance of the nucleation and crystal growth depending on the degree of the supersaturation. We successfully prepared narrow size-distributed rods with a nanometric width and a submicrometric length using the seed particles, because the presence of the seeds suppressed additional nucleation and then controlled the degree of the supersaturation for steady growth of the crystalline particles.",
keywords = "Crystal growth, Nanoparticle, Nanorod, Seed, Zinc oxide",
author = "Tetsuo Kawano and Hiroaki Imai",
year = "2008",
month = "4",
day = "15",
doi = "10.1016/j.colsurfa.2007.05.019",
language = "English",
volume = "319",
pages = "130--135",
journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",
issn = "0927-7757",
publisher = "Elsevier",
number = "1-3",

}

TY - JOUR

T1 - A simple preparation technique for shape-controlled zinc oxide nanoparticles

T2 - Formation of narrow size-distributed nanorods using seeds in aqueous solutions

AU - Kawano, Tetsuo

AU - Imai, Hiroaki

PY - 2008/4/15

Y1 - 2008/4/15

N2 - Various shapes of wurtzite-type ZnO nanoparticles were selectively produced in a simple aqueous system prepared by mixing ZnSO4 and NaOH solutions. Ellipsoidal nanoparticles were obtained by the addition of an alkaline agent into an acidic zinc solution (acidic route), while nanorods were grown by mixing a zinc precursor into an alkaline solution (basic route). The aspect ratio and size distribution of the nanorods grown through the basic routes were controlled by the addition of nanoparticles prepared by the acidic route as seeds. On the other hand, micrometric branching rods were obtained by dilution of the reaction solution in the basic routes. The morphological variation of ZnO particles is ascribed to the balance of the nucleation and crystal growth depending on the degree of the supersaturation. We successfully prepared narrow size-distributed rods with a nanometric width and a submicrometric length using the seed particles, because the presence of the seeds suppressed additional nucleation and then controlled the degree of the supersaturation for steady growth of the crystalline particles.

AB - Various shapes of wurtzite-type ZnO nanoparticles were selectively produced in a simple aqueous system prepared by mixing ZnSO4 and NaOH solutions. Ellipsoidal nanoparticles were obtained by the addition of an alkaline agent into an acidic zinc solution (acidic route), while nanorods were grown by mixing a zinc precursor into an alkaline solution (basic route). The aspect ratio and size distribution of the nanorods grown through the basic routes were controlled by the addition of nanoparticles prepared by the acidic route as seeds. On the other hand, micrometric branching rods were obtained by dilution of the reaction solution in the basic routes. The morphological variation of ZnO particles is ascribed to the balance of the nucleation and crystal growth depending on the degree of the supersaturation. We successfully prepared narrow size-distributed rods with a nanometric width and a submicrometric length using the seed particles, because the presence of the seeds suppressed additional nucleation and then controlled the degree of the supersaturation for steady growth of the crystalline particles.

KW - Crystal growth

KW - Nanoparticle

KW - Nanorod

KW - Seed

KW - Zinc oxide

UR - http://www.scopus.com/inward/record.url?scp=42949139907&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=42949139907&partnerID=8YFLogxK

U2 - 10.1016/j.colsurfa.2007.05.019

DO - 10.1016/j.colsurfa.2007.05.019

M3 - Article

AN - SCOPUS:42949139907

VL - 319

SP - 130

EP - 135

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

SN - 0927-7757

IS - 1-3

ER -