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Assembly of Graphene Nanosheets and SiO 2 Nanoparticles Towards Transparent, Antireflective, Conductive, and Superhydrophilic Multifunctional Hybrid Films
Author(s) -
Zhu Jiayi,
Xu Ligang,
He Junhui
Publication year - 2012
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201202494
Subject(s) - superhydrophilicity , anti reflective coating , graphene , materials science , antistatic agent , nanotechnology , raman spectroscopy , transmittance , nanoparticle , contact angle , transparent conducting film , thin film , chemical engineering , optoelectronics , layer (electronics) , composite material , optics , physics , engineering
A new approach for the fabrication of transparent, antireflective, conductive and superhydrophilic multifunctional hybrid films through the layer‐by‐layer (LbL) assembly of reduced graphene oxide (RGO) nanosheets and SiO 2 nanoparticles is reported. The RGO nanosheets, SiO 2 nanoparticles and films were characterized by means of transmission electron microscopy, UV/Vis absorption spectrophotometry, Raman spectroscopy, atomic force microscopy, contact angle/interface system, and a four‐point probe. It was found that the graphene/SiO 2 hybrid films exhibited a significant increase in transmittance as compared with RGO films. The optical, electronic and wetting properties of hybrid films could be manipulated by rational design of the film structure and variation of the cycle number of the LbL assembly. The obtained transparent, conductive, and superhydrophilic graphene/SiO 2 hybrid films showed excellent antireflective, antistatic, and antifogging behaviors. The remarkable performance could be attributed to the combination of electrical conductivity of RGO nanosheets and superhydrophilic antireflective surface derived from SiO 2 nanoparticles.