تلخیص
Low-cost, fast, and scalable method to produce
Graphene Oxide (GO) membrane for water purification
was studied. GO was synthesized using Tour’s Method.
Results of XRD, FTIR and SEM confirmed the
formation of GO. The synthesized GO was dissolved in
deionized water to form a dispersed ink. The viscosity of
ink was increased by adding ethylene glycol and glycerin.
The particle sizes of GO were in the range of ~200-350
nm. The ink was printed on commercially available
PVDF membrane using ink-jet printer. The membrane
was first attached over transparent film for support. The
ink-jet printer successfully printed on the membrane,
giving a yellowish-brown color to the membrane. A
coating thickness of 11.5 µm was obtained. Membrane
was used, after drying at 50°C for 2 hours, for water
filtration using gravimetric method. The GO membrane
fabricated using printing technique offered high
rejection of salts, making it cost and energy efficient. The
membrane rejected 90% of calcium carbonate, 98% of
sulfate, and 71% of nitrate. The TDS of the sample was
decreased by 78.6% of its value. The printing of GO
using ink-jet printing can be a promising route to low
cost fabrication of GO membrane.
Fayaz Hussain, Muhammad Sohail, Moiz Ullah Baig, Saad Arif, M. Daniyal Ahmed. (2019) Fabrication of Ultrathin Graphene Oxide Membrane for water purification using Ink-jet printing, Journal of Space Technology , Volume 9, Issue 1.
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