Self-Assembly of Metal Oxide Nanosheets at Liquid–Air Interfaces in Colloidal Solutions

H. Yuan, M. Timmerman, M. van de Putte, P. Gonzalez Rodriguez, Sjoerd Veldhuis, Johan E. ten Elshof

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)

Abstract

The oxide nanosheet concentration at the liquid–air interface (LAI) is a key parameter in the formation of Langmuir–Blodgett (LB) deposited nanosheet films. Knowledge of the oxide nanosheet concentration at the LAI as a function of process conditions is needed to understand the relevant processes and achieve better control over the LB fabrication process. In this study, the concentration of Ti0.87O2δ− titanate nanosheets at the LAI was investigated by considering the trend in the lift-up point (LUP) in the surface pressure–surface area isotherm of an LB compression process as a function of time and exfoliation agent. The oxide nanosheet concentrations in the bulk solutions were studied using UV–vis spectroscopy. The results show that the restacking process in the bulk solution does not significantly retard the occurrence of nanosheets at the LAI. The nanosheet concentration changes in the bulk and at the LAI occur on different time scales. Short exfoliation times yield higher nanosheet concentrations at the LAI than longer exfoliation times, in contrast to the bulk where the nanosheet concentration increases in the course of time. We found the same behavior for other metal oxide nanosheet solutions, i.e., iron-doped titanate (Ti0.6Fe0.4O20.4–) and calcium niobate (Ca2Nb3O10–) nanosheets. The reason behind this phenomenon is likely related to the high degree of adsorption of surfactant molecules on the nanosheet surface after short exfoliation times.
Original languageEnglish
Pages (from-to)25411-25417
Number of pages7
JournalJournal of physical chemistry C
Volume120
Issue number44
DOIs
Publication statusPublished - 2016

Fingerprint

Nanosheets
Self assembly
Oxides
metal oxides
self assembly
Metals
oxides
niobates
calcium
isotherms
surfactants
occurrences
trends
iron
fabrication
adsorption
Surface-Active Agents
Isotherms
Calcium
Surface active agents

Keywords

  • IR-103812
  • METIS-318676

Cite this

Yuan, H. ; Timmerman, M. ; van de Putte, M. ; Gonzalez Rodriguez, P. ; Veldhuis, Sjoerd ; ten Elshof, Johan E. / Self-Assembly of Metal Oxide Nanosheets at Liquid–Air Interfaces in Colloidal Solutions. In: Journal of physical chemistry C. 2016 ; Vol. 120, No. 44. pp. 25411-25417.
@article{738280f61ebb44bd8e5e422a2e867760,
title = "Self-Assembly of Metal Oxide Nanosheets at Liquid–Air Interfaces in Colloidal Solutions",
abstract = "The oxide nanosheet concentration at the liquid–air interface (LAI) is a key parameter in the formation of Langmuir–Blodgett (LB) deposited nanosheet films. Knowledge of the oxide nanosheet concentration at the LAI as a function of process conditions is needed to understand the relevant processes and achieve better control over the LB fabrication process. In this study, the concentration of Ti0.87O2δ− titanate nanosheets at the LAI was investigated by considering the trend in the lift-up point (LUP) in the surface pressure–surface area isotherm of an LB compression process as a function of time and exfoliation agent. The oxide nanosheet concentrations in the bulk solutions were studied using UV–vis spectroscopy. The results show that the restacking process in the bulk solution does not significantly retard the occurrence of nanosheets at the LAI. The nanosheet concentration changes in the bulk and at the LAI occur on different time scales. Short exfoliation times yield higher nanosheet concentrations at the LAI than longer exfoliation times, in contrast to the bulk where the nanosheet concentration increases in the course of time. We found the same behavior for other metal oxide nanosheet solutions, i.e., iron-doped titanate (Ti0.6Fe0.4O20.4–) and calcium niobate (Ca2Nb3O10–) nanosheets. The reason behind this phenomenon is likely related to the high degree of adsorption of surfactant molecules on the nanosheet surface after short exfoliation times.",
keywords = "IR-103812, METIS-318676",
author = "H. Yuan and M. Timmerman and {van de Putte}, M. and {Gonzalez Rodriguez}, P. and Sjoerd Veldhuis and {ten Elshof}, {Johan E.}",
year = "2016",
doi = "10.1021/acs.jpcc.6b07961",
language = "English",
volume = "120",
pages = "25411--25417",
journal = "Journal of physical chemistry C",
issn = "1932-7447",
publisher = "American Chemical Society",
number = "44",

}

Yuan, H, Timmerman, M, van de Putte, M, Gonzalez Rodriguez, P, Veldhuis, S & ten Elshof, JE 2016, 'Self-Assembly of Metal Oxide Nanosheets at Liquid–Air Interfaces in Colloidal Solutions' Journal of physical chemistry C, vol. 120, no. 44, pp. 25411-25417. https://doi.org/10.1021/acs.jpcc.6b07961

Self-Assembly of Metal Oxide Nanosheets at Liquid–Air Interfaces in Colloidal Solutions. / Yuan, H.; Timmerman, M.; van de Putte, M.; Gonzalez Rodriguez, P.; Veldhuis, Sjoerd; ten Elshof, Johan E.

In: Journal of physical chemistry C, Vol. 120, No. 44, 2016, p. 25411-25417.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Self-Assembly of Metal Oxide Nanosheets at Liquid–Air Interfaces in Colloidal Solutions

AU - Yuan, H.

AU - Timmerman, M.

AU - van de Putte, M.

AU - Gonzalez Rodriguez, P.

AU - Veldhuis, Sjoerd

AU - ten Elshof, Johan E.

PY - 2016

Y1 - 2016

N2 - The oxide nanosheet concentration at the liquid–air interface (LAI) is a key parameter in the formation of Langmuir–Blodgett (LB) deposited nanosheet films. Knowledge of the oxide nanosheet concentration at the LAI as a function of process conditions is needed to understand the relevant processes and achieve better control over the LB fabrication process. In this study, the concentration of Ti0.87O2δ− titanate nanosheets at the LAI was investigated by considering the trend in the lift-up point (LUP) in the surface pressure–surface area isotherm of an LB compression process as a function of time and exfoliation agent. The oxide nanosheet concentrations in the bulk solutions were studied using UV–vis spectroscopy. The results show that the restacking process in the bulk solution does not significantly retard the occurrence of nanosheets at the LAI. The nanosheet concentration changes in the bulk and at the LAI occur on different time scales. Short exfoliation times yield higher nanosheet concentrations at the LAI than longer exfoliation times, in contrast to the bulk where the nanosheet concentration increases in the course of time. We found the same behavior for other metal oxide nanosheet solutions, i.e., iron-doped titanate (Ti0.6Fe0.4O20.4–) and calcium niobate (Ca2Nb3O10–) nanosheets. The reason behind this phenomenon is likely related to the high degree of adsorption of surfactant molecules on the nanosheet surface after short exfoliation times.

AB - The oxide nanosheet concentration at the liquid–air interface (LAI) is a key parameter in the formation of Langmuir–Blodgett (LB) deposited nanosheet films. Knowledge of the oxide nanosheet concentration at the LAI as a function of process conditions is needed to understand the relevant processes and achieve better control over the LB fabrication process. In this study, the concentration of Ti0.87O2δ− titanate nanosheets at the LAI was investigated by considering the trend in the lift-up point (LUP) in the surface pressure–surface area isotherm of an LB compression process as a function of time and exfoliation agent. The oxide nanosheet concentrations in the bulk solutions were studied using UV–vis spectroscopy. The results show that the restacking process in the bulk solution does not significantly retard the occurrence of nanosheets at the LAI. The nanosheet concentration changes in the bulk and at the LAI occur on different time scales. Short exfoliation times yield higher nanosheet concentrations at the LAI than longer exfoliation times, in contrast to the bulk where the nanosheet concentration increases in the course of time. We found the same behavior for other metal oxide nanosheet solutions, i.e., iron-doped titanate (Ti0.6Fe0.4O20.4–) and calcium niobate (Ca2Nb3O10–) nanosheets. The reason behind this phenomenon is likely related to the high degree of adsorption of surfactant molecules on the nanosheet surface after short exfoliation times.

KW - IR-103812

KW - METIS-318676

U2 - 10.1021/acs.jpcc.6b07961

DO - 10.1021/acs.jpcc.6b07961

M3 - Article

VL - 120

SP - 25411

EP - 25417

JO - Journal of physical chemistry C

JF - Journal of physical chemistry C

SN - 1932-7447

IS - 44

ER -