TY - JOUR
T1 - Dynamic liquid phase deposition of doped nanostructured PANI tube sensor for trace-level NH3 gas detection
AU - Zhang, Wenqian
AU - Li, Guishun
AU - Chen, Yuxi
AU - Liu, Shaohua
AU - Xu, Jian
AU - Jing, Chengbin
AU - Zhang, Jungang
AU - Yang, Jianping
AU - Cheng, Ya
AU - Chu, Junhao
N1 - Publisher Copyright:
© 2019
PY - 2020/2/15
Y1 - 2020/2/15
N2 - We proposed a polyaniline-camphorsulfonic acid/titanium dioxide (PANI-CSA/TiO2) coated glass capillary tube sensor structure in this work. The PANI-CSA/TiO2 sensitive material was grown on the inner wall of silica glass capillary tube. A dynamic liquid phase deposition (DLPD) process was developed to fabricate the tube sensor samples. The optimum processing parameters, microstructures, morphology and gas detective performances of the PANI-CSA/TiO2 tube sensors were investigated. PANI-CSA/TiO2 capillary tube sensor samples (core size 1 mm, length 7 cm) with better properties were obtained at an optimum liquid flow rate of 0.62 mL min−1. The tube sensor shows response time of 84 s, response of 877 % and recovery time of 55 s for detecting 3 ppm NH3 gas while the plane sensor sample has response time of 152 s, response of 17.8 % and recovery time of 367 s. The capillary tube sensor exhibits convenience for detecting a small volume of gas sample. For a 1 mL, 0.1 ppm NH3 gas sample, the PANI-CSA/TiO2 capillary tube sensor exhibits 54 s response time, 454 % response while the plane-shaped sensor fails to detect.
AB - We proposed a polyaniline-camphorsulfonic acid/titanium dioxide (PANI-CSA/TiO2) coated glass capillary tube sensor structure in this work. The PANI-CSA/TiO2 sensitive material was grown on the inner wall of silica glass capillary tube. A dynamic liquid phase deposition (DLPD) process was developed to fabricate the tube sensor samples. The optimum processing parameters, microstructures, morphology and gas detective performances of the PANI-CSA/TiO2 tube sensors were investigated. PANI-CSA/TiO2 capillary tube sensor samples (core size 1 mm, length 7 cm) with better properties were obtained at an optimum liquid flow rate of 0.62 mL min−1. The tube sensor shows response time of 84 s, response of 877 % and recovery time of 55 s for detecting 3 ppm NH3 gas while the plane sensor sample has response time of 152 s, response of 17.8 % and recovery time of 367 s. The capillary tube sensor exhibits convenience for detecting a small volume of gas sample. For a 1 mL, 0.1 ppm NH3 gas sample, the PANI-CSA/TiO2 capillary tube sensor exhibits 54 s response time, 454 % response while the plane-shaped sensor fails to detect.
KW - Ammonia gas sensor
KW - Dynamic liquid phase deposition
KW - Glass capillary tube sensor
KW - Nanostructured polyaniline
UR - https://www.scopus.com/pages/publications/85075826819
U2 - 10.1016/j.snb.2019.127459
DO - 10.1016/j.snb.2019.127459
M3 - 文章
AN - SCOPUS:85075826819
SN - 0925-4005
VL - 305
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
M1 - 127459
ER -