Open AccessSynthesis of vertical graphene flowers as a photoelectrocatalyst for organic degradation
Author(s) -
Tian Fangyuan,
Li Hongji,
Li Mingji
Publication year - 2017
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2016.0709
Subject(s) - graphene , materials science , petal , chemical vapor deposition , degradation (telecommunications) , chemical engineering , graphene nanoribbons , graphene foam , nanotechnology , botany , telecommunications , computer science , engineering , biology
Three‐dimensional vertical graphene flowers were fabricated using a simple, low‐cost, and efficient chemical vapour deposition method with Ni(NO 3 ) 2 as a catalyst precursor and methane as a carbon precursor. Graphene flowers of up to 10 μm in size with petals of two to seven layers of graphene were obtained. The growth of the vertically aligned graphene flowers was attributed to a columnar growth mechanism. Numerous micropores were observed between the flower petals and irregular mesopores were observed in the interconnected flowers. The charge‐transfer resistance of a graphene flower/Ta film was 30.8 Ω. The graphene flowers acted as charge carriers, reducing the charge recombination rate and enhancing electron transport. The vertical graphene flowers showed significant photoelectrocatalytic activity for the degradation of phenol.