Design of interpenetrated network MWCNT/poly(1,5-DAN) on interdigital electrode: toward NO2 gas sensing.
In this paper, poly(1,5-diaminonaphthalene) was interpenetrated into the network made of multiwalled carbon nanotubes (MWCNT) on platinum interdigital electrode (IDE) by electro-polymerization of 1,5-diaminonaphthalene (1,5-DAN). The electro-polymerization process of 1,5-DAN on MWCNT was controlled by scanning the cyclic voltage at 50 mV s(-1) scan rate between -0.1 V and +0.95 V vs. saturated calomel electrode (SCE). The results of voltammetric responses and Raman spectroscopy represented that the films MWCNT/poly(1,5-DAN) were successfully created by this polymerization process. The films MWCNT/poly(1,5-DAN) were investigated for gas-sensing to NO2 at low concentration level. The gas-sensing results showed that the response-recovery times were long and strongly affected by thickness of the film MWCNT/poly(1,5-DAN). Nevertheless, these films represented auspicious results for gas sensors operating at room temperature.
Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Hanoi, Viet Nam. Electronic address: ndung@itt.vast.vn.
Dzung Tuan
DT
Nguyen
My Thanh
MT
Nguyen
Giang Truong
GT
Ho
Toan Ngoc
TN
Nguyen
S
S
Reisberg
B
B
Piro
M C
MC
Pham
D015081:2-Naphthylamine / Q000031:analogs & derivatives* / Q000737:chemistry; D000393:Air Pollutants / Q000032:analysis*; D002384:Catalysis; D055664:Electrochemical Techniques; D004566:Electrodes; D004867:Equipment Design; D006863:Hydrogen-Ion Concentration; D037742:Nanotubes, Carbon / Q000737:chemistry*; D009585:Nitrogen Dioxide / Q000032:analysis*; D010984:Platinum; D058105:Polymerization; D013696:Temperature
D000393:Air Pollutants; D037742:Nanotubes, Carbon; C510889:1,5-diaminonaphthalene; D010984:Platinum; D015081:2-Naphthylamine; D009585:Nitrogen Dioxide
Poly-diaminonaphthalene; Polymer conducting; Room temperature gas sensors