Highly transparent superhydrophilic graphene oxide coating for antifogging

The superhydrophilic property of the surface allows water to spread completely across the surface rather than remain as droplets, thus making the surface antifogging. In this work, graphene oxide was prepared by the modified Hummers method, and the superhydrophilic and highly transparent functional graphene oxide coating had been fabricated on the glass substrate through a spin coating process. The as-prepared coated glass had a static water contact angle of 3.7 degrees and a relatively high transmittance reaching about 76% throughout the visible region. For comparison, we studied the antifogging properties of the graphene oxide coated glass and the bare glass surfaces. The result shows these glass exhibits absolutely different fogging characteristics, and the graphene oxide coated glass has the superior antifogging property. (C) 2016 Elsevier B.V. All rights reserved.