Premium
Highly Photoactive, Low Bandgap TiO 2 Nanoparticles Wrapped by Graphene
Author(s) -
Lee Joon Seok,
You Kyeong Hwan,
Park Chan Beum
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201104110
Subject(s) - graphene , materials science , anatase , photocatalysis , nanoparticle , band gap , amorphous solid , nanotechnology , oxide , hydrothermal circulation , crystallization , chemical engineering , optoelectronics , organic chemistry , chemistry , engineering , metallurgy , catalysis
Highly photoactive, graphene‐wrapped anatase TiO 2 nanoparticles are synthesized through one‐step hydrothermal reduction of graphene oxide (GO) and TiO 2 crystallization from GO‐wrapped amorphous TiO 2 NPs. Graphene‐TiO 2 nanoparticles exhibit a red‐shift of the band‐edge and a significant reduction of the bandgap (2.80 eV). Graphene‐TiO 2 nanoparticles possess excellent photocatalytic properties under visible light for the degradation of methylene blue.