Deposition and release of graphene oxide nanomaterials using a quartz crystal microbalance

Indranil Chowdhury, Matthew C. Duch, Nikhita D. Mansukhani, Mark C Hersam, Dermont Bouchard

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

Interactions of graphene oxide (GO) with silica surfaces were investigated using a quartz crystal microbalance with dissipation monitoring (QCM-D). Both GO deposition and release were monitored on silica- and poly-l-lysine (PLL) coated surfaces as a function of GO concentration and in NaCl, CaCl2, and MgCl2 as a function of ionic strength (IS). Under favorable conditions (PLL-coated positive surface), GO deposition rates increased with GO concentration, as expected from colloidal theory. Increased NaCl concentration resulted in a greater deposition attachment efficiency of GO on the silica surface, indicating that deposition of GO follows Derjaguin-Landau-Verwey- Overbeek (DLVO) theory; GO deposition rates decreased at high IS, however, due to large aggregate formation. GO critical deposition concentration (CDC) on the silica surface is determined to be 40 mM NaCl which is higher than the reported CDC values of fullerenes and lower than carbon nanotubes. A similar trend is observed for MgCl2 which has a CDC value of 1.2 mM MgCl2. Only a minimal amount of GO (frequency shift 2 due to the bridging ability of Ca 2+ ions with GO functional groups. Significant GO release from silica surface was observed after adding deionized water, indicating that GO deposition is reversible. The release rates of GO were at least 10-fold higher than the deposition rates under similar conditions indicating potential high release and mobility of GO in the environment. Under favorable conditions, a significant amount of GO was released which indicates potential multilayer GO deposition. However, a negligible amount of deposited GO was released in CaCl2 under favorable conditions due to the binding of GO layers with Ca2+ ions. Release of GO was significantly dependent on salt type with an overall trend of NaCl > MgCl2 > CaCl2.

Original languageEnglish
Pages (from-to)961-969
Number of pages9
JournalEnvironmental Science and Technology
Volume48
Issue number2
DOIs
Publication statusPublished - Jan 21 2014

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Quartz Crystal Microbalance Techniques
Graphite
Nanostructures
Quartz crystal microbalances
Nanostructured materials
Oxides
oxide
crystal
quartz
Magnesium Chloride
Silicon Dioxide
silica
Deposition rates
Ionic strength
Osmolar Concentration
Lysine

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Medicine(all)

Cite this

Deposition and release of graphene oxide nanomaterials using a quartz crystal microbalance. / Chowdhury, Indranil; Duch, Matthew C.; Mansukhani, Nikhita D.; Hersam, Mark C; Bouchard, Dermont.

In: Environmental Science and Technology, Vol. 48, No. 2, 21.01.2014, p. 961-969.

Research output: Contribution to journalArticle

Chowdhury, Indranil ; Duch, Matthew C. ; Mansukhani, Nikhita D. ; Hersam, Mark C ; Bouchard, Dermont. / Deposition and release of graphene oxide nanomaterials using a quartz crystal microbalance. In: Environmental Science and Technology. 2014 ; Vol. 48, No. 2. pp. 961-969.
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