Nitrogen-doped graphene quantum dot-intensified tungsten oxide nanosheets as a SERS substrate for antibiotics detection†
Lu
Tan, 
‡bc
Xuanzhao
Lu,
‡c
Shuzhen
Yue,
c
Yue
Cao,
a
Yang
Zhou,
*a
Baokang
Jin
*b
and
Jun-Jie
Zhu
*c
‡bc
Xuanzhao
Lu,
‡c
Shuzhen
Yue,
c
Yue
Cao,
a
Yang
Zhou,
*a
Baokang
Jin
*b
and
Jun-Jie
Zhu
*c
Abstract
In this study, tungsten oxide nanosheets loaded with nitrogen-doped graphene oxide quantum dots (NGQDs/WO3 NSs) were fabricated as SERS substrates. The promoted photo-induced charge transfer (PICT) and the strong π–π stacking effect resulting from the unique structure of the NGQDs contributed to the enhanced SERS signal.
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