Jump to main content
Jump to site search


Antifouling Properties of Two Dimensional Molybdenum Disulfide and Graphene Oxide Nanomaterials

Abstract

Fouling remains one of the biggest challenges in a myriad of industries such as water filters, ship hulls, biomedical devices, coatings, and paintings. Fouling severely hampers the performance and increase the operation and maintenance costs in industries. There is a critical need to develop antifouling surfaces and two-dimensional (2D) materials, such as graphene oxide (GO) and molybdenum disulfide (MoS2), have shown potential for antifouling surface preparation due to some unique properties. Here, the antifouling properties of these two materials were investigated by observing the deposition kinetics of bacteria and natural organic matter (NOM) using a quartz crystal microbalance with dissipation monitoring (QCM-D). Suwannee River humic acid (SRHA) and E. coli K-12 were used as model NOM and bacteria, respectively. Overall MoS2 showed slightly better antifouling properties compared to GO. In most cases, the deposition of NOM and E. coli was significantly lower on MoS2 than GO due to the presence of functional groups on GO that bind more easily with the foulants. Deposition of NOM was at least 1.5 times lower on MoS2 surface than GO surface in the presence of both monovalent (Na+) and divalent (Mg2+) cations. However, the presence of 0.5 mM divalent cations (Ca2+, Mg2+) with NOM reduced the antifouling properties of both MoS2 and GO by a factor of ≥1.5 due to a salt bridging effect and reduced energy barrier.

Back to tab navigation

Supplementary files

Publication details

The article was received on 19 Feb 2018, accepted on 14 May 2018 and first published on 15 May 2018


Article type: Paper
DOI: 10.1039/C8EN00202A
Citation: Environ. Sci.: Nano, 2018, Accepted Manuscript
  •   Request permissions

    Antifouling Properties of Two Dimensional Molybdenum Disulfide and Graphene Oxide Nanomaterials

    I. Alam, L. Guiney, M. C. Hersam and I. Chowdhury, Environ. Sci.: Nano, 2018, Accepted Manuscript , DOI: 10.1039/C8EN00202A

Search articles by author

Spotlight

Advertisements