advanced-nano-2017-posters-accepted-abstracts

29 / 31

Nano Research & Applications
ISSN 2471-9838 Advanced Nano 2017
Page 81
September 11-12, 2017 Amsterdam, Netherlands
20th International Conference on
Advanced Nanotechnology
Optical property improvement of reactive BAPC/
DAP blends with the aid of nano-silica coated
titania
Yajiang Yang*, Xiaoping Zeng
School of Chemistry and Chemical Engineering, Huazhong University
of Science and Technology, Wuhan 430074, China
Halloysites are a kind of aluminosilicate clay with
a morphology of a nanotube.1 The inner wall of
halloysite is positively charged and the external surface
is negatively charged.2 In this work, we propose a simple
and facile method to prepare Ag NPs loaded in the
lumen of halloysite nanotubes (HNTs). Herein, N-acetyl-
L-cysteine modified silver nanoparticles (Ag NPs) with
negative charges spontaneously and stably resided
in the lumen of HNTs via electrostatic interactions. The
images of transmission electron microscopy and scanning
transmission electron microscopy showed that Ag NPs
with a size of ~2.6 nm were uniformly distributed in the
lumen of HNTs. The obtained Ag NPs/HNTs composites
show excellent catalytic activity when they were used
as catalyst. The catalytic activity of the Ag NPs/HNTs
composites was evaluated by the reduction reaction
of 4-nitrophenol (4-NP) as a model reaction. When the
molar ratio of Ag and 4-NP was set at 0.008, the rate
constant of the reaction was found to be 0.91 min-1, 2
times higher than that of Ag NPs adsorbed on the external
surface of HNTs. Additionally, no Ag NPs were found in
the supernatant after the Ag NPs/HNTs suspension was
stirred for 30 min. Such structural stability implies good
reusability as a catalyst.
Nano Research & Applications