Open AccessFreestanding flexible polypyrrole nanotube membrane for ammonia sensor
Author(s) -
Li Xiujuan,
Cai Ziqing,
Fang Dong,
Wang Chang,
Zhang Ruifang,
Lu Xingjie,
Li Yuguang,
Xu Weilin
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.2017.0319
Subject(s) - polypyrrole , materials science , nanotube , membrane , transmission electron microscopy , scanning electron microscope , chemical engineering , nanotechnology , ammonia , citric acid , nanowire , carbon nanotube , vanadate , foil method , composite material , chemistry , polymer , organic chemistry , polymerization , biochemistry , engineering , metallurgy
A simple self‐sacrificed template method was used to prepare a polypyrrole (PPy) nanotubes sensor for the detection of ammonia (NH 3 ). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to analyse the morphology of the fabricated membrane. The results show that pyrrole was uniformly polymerised around the sodium vanadate (Na 5 V 12 O 32 ) nanowires, and the Na 5 V 12 O 32 nanowires along with Ti foil were subsequently dissolved thoroughly with citric acid (0.5 M) and hydrofluoric acid (10%, v/v) to obtain a freestanding flexible PPy nanotube membrane. The resulting PPy membrane was sensitive to NH 3 and exhibited rapid and reproducible response at room temperature.