Multilayer-Structured Poly-Vanadium Acid/Polyaniline Composite: Synthesis and Properties for Humidity Sensing

다국어 초록 (Multilingual Abstract)

A high-performance humidity sensor based on multilayer-structured poly-vanadium acid/polyaniline (V/PANI) composite was reported in this paper.
Two-layer-structured V/PANI composite was fabricated by dip-coating poly-vanadium acid and electrochemically polymerizing PANI onto the interdigitated gold electrode in sequence, and then the process could be repeated to prepare the second two-layer-structured V/PANI composite. The crystalline phase properties and structural characteristics of the poly-vanadium acid, PANI, and V/PANI composite were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy, and UV-visible spectroscopy, respectively. The morphological characteristics of the first two-layer-structured V/PANI composite and multilayer-structured V/PANI composite were characterized by scanning electron microscopy. Additionally, sensors based on the multilayer-structured V/PANI composite showed good humidity sensing properties. For instance, its impedance changed linearly for approximately four orders of magnitude in a wide range of 11-97% RH. Furthermore, it displayed small hysteresis (∼5%RH), fast response (t90% of 8 s and 12 s for adsorption and desorption processes, respectively), good stability. The possible sensing mechanism was analyzed by considering the special multilayer structure and using complex impedance spectra and the corresponding equivalent circuit of the sensor. The measurement results highlight the multilayer-structured V/PANI composite film is a candidate material for constructing humidity sensors.

참고문헌 (Reference)

1 J. Bullet, 68 : 135-, 1984

2 Q. Lin, 161 : 967-, 2012

3 J. E. Moneyron, 4 : 189-, 1991

4 V. Bondarenka, 28 : 227-, 1995

5 G. S. Zakharova, 46 : 1115-, 2010

6 B. Casal, 85 : 4167-, 1989

7 I. A. Leonidov, 38 : 1178-, 2002

8 V. Bondarenka, 55 : 60-, 1999

9 S. Mickevicius, 2000

10 M. V. Kulkarni, 178 : 140-, 2013

11 W. P. Chen, 9 : 7431-, 2009

12 Z. Zhu, 120 : 3215-, 2016

13 P. Li, 141 : 390-, 2009

14 D Nicolas-Debarnot, 475 : 1-, 2003

15 S. T. Mcgovern, 107 : 657-, 2005

16 R. Nohria, 114 : 218-, 2006

17 A. T. Ramaprasad, 148 : 117-, 2010

18 X. Z. Li, 6 : 63099-, 2016

19 F. W. Zeng, 143 : 530-, 2010

20 S. K. Shukla, 1 : 129-, 2010

21 A. A. Athawale, 67 : 173-, 2000

22 M. L. Singla, 127 : 580-, 2007

23 L. Peng, 115 : 395-, 2009

24 Q. Lin, 748 : 73-, 2012

25 K. C. Sajjan, 25 : 1237-, 2014

26 N. Wang, 5 : 21132-, 2015

27 Y. Li, 199 : 51-, 2015

28 Q. Q. Chen, 254 : 30-, 2018

29 S. J. Choi, 149 : 26-, 2002

30 N. Parvatikar, 114 : 599-, 2006

31 N. Parvatikar, 102 : 5533-, 2010

32 N. Parvatikar, 103 : 653-, 2010

33 V. L. Volkov, 31 : 642-, 1985

34 C. Q. Cui, 38 : 1395-, 1993

35 R. Sha, 233 : 44-, 2017

36 E. Song, 3 : 498-, 2013

37 K. Pragna, 1 : 86-, 2010

38 K. R. Reddy, 106 : 1181-, 2007

39 K. R. Reddy, 320 : 49-, 2008

40 K. R. Reddy, 48 : 1477-, 2010

41 Y. P. Zhang, 104 : 2743-, 2007

42 K. R. Reddy, 120 : 169-, 2016

43 K. R. Reddy, 38 : 349-, 2006

44 K. R. Reddy, 159 : 595-, 2009

45 K. R. Reddy, 7 : 3117-, 2007

46 K. R. Reddy, 62 : 1815-, 2008

47 V. R. Khadse, 203 : 229-, 2014

48 J. Zhang, 695 : 520-, 2017

49 M. Alifanti, 15 : 395-, 2003

50 V. K. Tomer, 197 : 140-, 2014

51 V. K. Tomer, 98 : 741-, 2015

52 H. I. Chen, 246 : 408-, 2017

53 C. L. Hsu, 249 : 265-, 2017

54 W. Li, 317 : 970-, 2014

55 L. Wang, 153 : 460-, 2011

56 S. Jain, 96 : 124-, 2003

57 P. Barboux, 9 : 1073-, 1983

58 V. K. Tomer, 212 : 517-, 2015

59 R. Wang, 115 : 3474-, 2010

60 H. Zhao, 240 : 681-, 2017

61 Y. Li, 160 : 455-, 2010

62 P. Park, "Application of nano-structured conducting polymers to humidity sensing" 2008