Study on Effect of Acid and Heat Treatments of Multi-Walled Carbon Nanotubes on Benzene Detection

Abstract:

Effect of acid and heat treatments of multi-walled carbon nanotubes (MWCNTs) on benzene detection was investigated. For acid treatment, MWCNTs were treated by hydrochloric acid (HCl) for 1 h meanwhile other batches of MWCNTs were treated by heating under air ambient at 500^°C for 1 h. Pristine, HCl-treated and heat-treated MWCNTs were separately coated with ethyl cellulose (EC) by spin-coating prior to fabrication of three different sensors named as EC/pristine MWCNTs, EC/HCl-MWCNTs and EC/heat-MWCNTs sensors, respectively. Each fabricated sensor was exposed to benzene vapor at room temperature for testing its sensing performance based on an increase in its electrical resistance which was sensitive to benzene vapor. Response of the sensors fabricated from EC/HCl-MWCNTs and EC/heat-MWCNTs were 3.66 and 1.92 times higher than that of EC/pristine MWCNTs, respectively. Sensitivity of all sensors would be attributed to swelling of EC, resulting in loosening of MWCNT network after benzene vapor exposure. In addition, the difference of sensing response of the EC/pristine MWCNTs when compared with those of EC/HCl-MWCNTs and EC/heat-MWCNTs would be ascribed to different crystallinity and functionalization of MWCNTs sidewalls, suggesting that acid and heat treatments of MWCNTs would be promising techniques for improvement of benzene detection.

• Periodical: Advanced Materials Research (Volume 1103)
• Pages: 105-111
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1103.105
• Online since: May 2015
• Authors: Thanattha Chobsilp, Winadda Wongwiriyapan*, Chaisak Issro, Worawut Muangrat, Weerawut Chaiwat, Apiluck Eiad-Ua, Tawatchai Charinpanitkul, Komkrit Suttiponpanit
• Keywords: Acid Treatment, Benzene, Ethyl-Cellulose, Heat Treatment, Multi-Walled Carbon Nanotubes

References

[1] C. Farrow, H. Wheeler, N. Bates, V. Murray, The chemical incident management handbook, London: The Stationery Office, (2000).

[2] Information on http: /www. cdc. gov/niosh/npg/npgd0049. html.

[3] Information on http: /www. atsdr. cdc. gov/toxprofiles/tp3-c7. pdf.

[4] H. Nguyen, S. A. El-Safty, Meso- and macroporous Co3O4 nanorods for effective VOC gas sensors, J. Phys. Chem. C 115 (2011) 8466–8474.

DOI: 10.1021/jp1116189

[5] J. Kong, N.R. Franklin, C. Zhou, M.G. Chapline, S. Peng, K. Cho, H. Dai, Nanotube molecular wires as chemical sensors, Science 687 (2000) 622-625.

DOI: 10.1126/science.287.5453.622

[6] W. Wongwiriyapan, S. I. Honda, H. Konishi, T. Mizuta, T. Ikuno, T. Ito, T. Maekawa, K. Suzuki, H. Ishikawa, K. Oura, M. Katayama, Single-walled carbon nanotube thin-film sensor for ultrasensitive gas detection, Jpn. J. Appl. Phys. 44 (2005).

DOI: 10.1143/jjap.44.l482

[7] C. Poonjarernsilp, N. Sano, T. Charinpanitkul, H. Mori, T. Kikuchi, H. Tamon, Single-step synthesis and characterization of single-walled carbon nanohorns hybridized with Pd nanoparticles using N2 gas- injected arc-in-water method, Carbon 49 (2011).

DOI: 10.1016/j.carbon.2011.07.016

[8] A. Ilcham, A. Srisurichan, A. Soottitantawat, T. Charinpanitkul, Dispersion of multi-walled carbon nanotubes in poly(p-phenylene) thin films and their electrical characteristics , Particuology 7 (2009) 403-407.

DOI: 10.1016/j.partic.2009.03.006

[9] J. Li, Y. Lu, Q. Ye, M. Cinke, J. Han, M. Meyyappan, Carbon nanotube sensors for gas and organic vapor detection, Nano Lett. 3 (2003) 929–933.

DOI: 10.1021/nl034220x

[10] E. S. Snow, F. K. Perkins, Capacitance and conductance of single-walled carbon nanotubes in the presence of chemical vapors, Nano Lett. 5 (2005) 2414–2417.

DOI: 10.1021/nl051669c

[11] W. Muangrat, R. Maolanon, S. Pratontep, S. Porntheeraphat, W. Wongwiriyapan, Polymer coated single-walled carbon nanotubes for ethanol and dichloromethane discrimination, Adv. Mater. Res. 802 (2013) 267-272.

DOI: 10.4028/www.scientific.net/amr.802.267

[12] I. Hafaiedh, W. Elleuch, P. Clement, E. Llobet, A. Abdelghani, Multi-walled carbon nanotubes for volatile organic compound detection, Sens. Actua. B 182 (2013) 344-350.

DOI: 10.1016/j.snb.2013.03.020

[13] R. Leghrib, A. Felter, F. Demoisson, F. Reniers, J.J. Pireaux, E. Loober, Room-temperature, selective detection of benzene at trace levels using plasma-treatmented metal-decorated multiwalled carbon nanotubes, Carbon 48 (2010) 3477-3848.

DOI: 10.1016/j.carbon.2010.05.045

[14] B. Zhang, R.U. Fu, M.Q. Zhang, X.M. Dong, P.L. Lan, J.S. Qiu, Preparation and characterization of gas-sensitive composites from multi-walled carbon nanotubes/polystyrene, Sens. Actua. B 109 (2005) 323-328.

DOI: 10.1016/j.snb.2004.12.066

[15] S.M. Cho, Y.J. Kim, Y.S. Kim, Y. Yang, S.C. Ha, The application of carbon nanotube-polymer composite as gas sensing materials, Sensors Proceeding of IEEE 2 (2004) 701-704.

DOI: 10.1109/icsens.2004.1426263

[16] H. Kataura, Y. Kumazawa, Y. Maniwa, I. Umezu, S. Suzuki, Y. Ohtsuka, Y. Achiba, Optical properties of single-wall carbon nanotubes, Synthetic Metals 103 (1999) 2555-2558.

DOI: 10.1016/s0379-6779(98)00278-1

[17] U.J. Kim, C.A. Furtado, X. Liu, G. Chen, P.C. Eklund, Raman and IR spectroscopy of chemically processed single-walled carbon nanotubes, J. Am. Chem. Soc. 127 (2005), 15437-15445.

DOI: 10.1021/ja052951o

[18] A. Garg, S.B. Sinnott, Effect of chemical functionalization on the mechanical properties of carbon nanotubes, Chem. Phys. Lett. 295 (1998) 273-278.

DOI: 10.1016/s0009-2614(98)00969-5

[19] A.A. Koos, Z.E. Horvath, Z. Osvath, L. Tapaszto, K. Niesz, Z. Konya, I. Kirisci, N. Grobert, M. Ruhle, L.P. Biro, STM investigation of carbon nanotubes connected by functional groups, Mater. Sci. Eng. C 23 (2003) 1007-1011.

DOI: 10.1117/12.498912