Organized and highly dispersed growth of MnO2 nano-rods by sonochemical hydrolysis of Mn(3)acetate

V. Ganesh Kumar, Kwang Bum Kim

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Highly dispersed and non-agglomerated α-MnO2 nano-needles of dimensions 20-30 nm have been synthesized by the application of ultrasound radiation on the aqueous solution consisting of manganese(3)acetate close to neutral pH followed by mild drying. With a similar reaction system, hot hydrolysis (non-sonochemical process) produced β-MnO2 nano-rods of length 100-200 nm but with high degree agglomeration. Sonochemical cavitation phenomenon is suggested to have a pronounced effect for the formation of special phase and morphology. The effect is proved by the difference in the intermediate products which has difference in crystalinity and phase-purity. The intermediate phases are identified to be single-phase γ-MnOOH for the non-sonochemical reaction and mixture of γ-MnOOH, α-MnO2 and β-MnO2 for the sonochemical products.

Original languageEnglish
Pages (from-to)549-556
Number of pages8
JournalUltrasonics Sonochemistry
Volume13
Issue number6
DOIs
Publication statusPublished - 2006 Jan 1

Fingerprint

Manganese
Cavitation
Needles
hydrolysis
acetates
Hydrolysis
acetate
Drying
Acetates
rods
Agglomeration
Ultrasonics
Radiation
cavitation
products
Growth
agglomeration
cavitation flow
needles
drying

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Environmental Chemistry
  • Radiology Nuclear Medicine and imaging
  • Acoustics and Ultrasonics
  • Organic Chemistry
  • Inorganic Chemistry

Cite this

@article{3407e7c576034dad934029b487e77cf9,
title = "Organized and highly dispersed growth of MnO2 nano-rods by sonochemical hydrolysis of Mn(3)acetate",
abstract = "Highly dispersed and non-agglomerated α-MnO2 nano-needles of dimensions 20-30 nm have been synthesized by the application of ultrasound radiation on the aqueous solution consisting of manganese(3)acetate close to neutral pH followed by mild drying. With a similar reaction system, hot hydrolysis (non-sonochemical process) produced β-MnO2 nano-rods of length 100-200 nm but with high degree agglomeration. Sonochemical cavitation phenomenon is suggested to have a pronounced effect for the formation of special phase and morphology. The effect is proved by the difference in the intermediate products which has difference in crystalinity and phase-purity. The intermediate phases are identified to be single-phase γ-MnOOH for the non-sonochemical reaction and mixture of γ-MnOOH, α-MnO2 and β-MnO2 for the sonochemical products.",
author = "Kumar, {V. Ganesh} and Kim, {Kwang Bum}",
year = "2006",
month = "1",
day = "1",
doi = "10.1016/j.ultsonch.2005.09.010",
language = "English",
volume = "13",
pages = "549--556",
journal = "Ultrasonics Sonochemistry",
issn = "1350-4177",
publisher = "Elsevier",
number = "6",

}

Organized and highly dispersed growth of MnO2 nano-rods by sonochemical hydrolysis of Mn(3)acetate. / Kumar, V. Ganesh; Kim, Kwang Bum.

In: Ultrasonics Sonochemistry, Vol. 13, No. 6, 01.01.2006, p. 549-556.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Organized and highly dispersed growth of MnO2 nano-rods by sonochemical hydrolysis of Mn(3)acetate

AU - Kumar, V. Ganesh

AU - Kim, Kwang Bum

PY - 2006/1/1

Y1 - 2006/1/1

N2 - Highly dispersed and non-agglomerated α-MnO2 nano-needles of dimensions 20-30 nm have been synthesized by the application of ultrasound radiation on the aqueous solution consisting of manganese(3)acetate close to neutral pH followed by mild drying. With a similar reaction system, hot hydrolysis (non-sonochemical process) produced β-MnO2 nano-rods of length 100-200 nm but with high degree agglomeration. Sonochemical cavitation phenomenon is suggested to have a pronounced effect for the formation of special phase and morphology. The effect is proved by the difference in the intermediate products which has difference in crystalinity and phase-purity. The intermediate phases are identified to be single-phase γ-MnOOH for the non-sonochemical reaction and mixture of γ-MnOOH, α-MnO2 and β-MnO2 for the sonochemical products.

AB - Highly dispersed and non-agglomerated α-MnO2 nano-needles of dimensions 20-30 nm have been synthesized by the application of ultrasound radiation on the aqueous solution consisting of manganese(3)acetate close to neutral pH followed by mild drying. With a similar reaction system, hot hydrolysis (non-sonochemical process) produced β-MnO2 nano-rods of length 100-200 nm but with high degree agglomeration. Sonochemical cavitation phenomenon is suggested to have a pronounced effect for the formation of special phase and morphology. The effect is proved by the difference in the intermediate products which has difference in crystalinity and phase-purity. The intermediate phases are identified to be single-phase γ-MnOOH for the non-sonochemical reaction and mixture of γ-MnOOH, α-MnO2 and β-MnO2 for the sonochemical products.

UR - http://www.scopus.com/inward/record.url?scp=33745888393&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33745888393&partnerID=8YFLogxK

U2 - 10.1016/j.ultsonch.2005.09.010

DO - 10.1016/j.ultsonch.2005.09.010

M3 - Article

VL - 13

SP - 549

EP - 556

JO - Ultrasonics Sonochemistry

JF - Ultrasonics Sonochemistry

SN - 1350-4177

IS - 6

ER -