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BRIEF REPORTSNo Access

HUMIDITY SENSING PROPERTIES OF COBALT OXIDE/SILICA NANOCOMPOSITES PREPARED VIA SOL–GEL AND RELATED ROUTES

Central Metallurgical Research and Development Institute, CMRDI, P. O. Box 87, Helwan 11421, Egypt

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,

GOMAA A. M. ALI

Chemistry Department, Faculty of Science, Al-Azhar University, Assiut branch, Assiut 71524, Egypt

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M. A. I. EL-ERIAN

Chemistry Department, Faculty of Science, Al-Azhar University, Assiut branch, Assiut 71524, Egypt

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, and

SALAH A. MAKHLOUF

Physics Department, Faculty of Science, Assiut University, Assiut 71516, Egypt

Deanship of Scientific Research, Al Imam Mohammad Ibn Saud, Islamic University (IMSIU), Riyadh 11463, Kingdom of Saudi Arabia

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https://doi.org/10.1142/S1793292012500385Cited by:64 (Source: Crossref)

Abstract

Ultrafine Co₃O₄/SiO₂ nanocomposites were obtained via sol–gel (SG) method and related routes. The samples were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM) and N₂ adsorption–desorption techniques. The obtained phase, size of crystallites and specific surface area of the composites vary with the Co:SiO₂ weight ratio and preparation route. Humidity sensing properties measured by monitoring the DC conductivity for the obtained nanocomposites are reported. Conductivity changes amount to four orders of magnitudes were observed in response to 10–90% relative humidity change in the measuring chamber. Results indicate that humidity sensing properties depend on Co content and specific surface area of the composite.

Keywords:

References

J. Wang, X.-H. Wang and X. D. Wang, Sens. Actuators B 108, 445 (2005), DOI: 10.1016/j.snb.2004.11.089. Crossref, Web of Science, Google Scholar
X. Lvet al., Sens. Actuators B 135, 581 (2009), DOI: 10.1016/j.snb.2008.10.008. Crossref, Web of Science, Google Scholar
Z. M. Rittersmaet al., Sens. Actuators B 68, 210 (2000), DOI: 10.1016/S0925-4005(00)00431-7. Crossref, Web of Science, Google Scholar
N. Yamazoe and Y. Shimizu, Sens. Actuators 10, 379 (1986). Crossref, Web of Science, Google Scholar
V. K. Khanna and R. K. Nahar, Sens. Actuators 5, 187 (1984). Crossref, Web of Science, Google Scholar
G. Gusmanoet al., J. Mater. Process. Technol. 56, 589 (1996), DOI: 10.1016/0924-0136(96)85112-0. Crossref, Web of Science, Google Scholar
K.-S. Chou, T.-K. Lee and F.-J. Liu, Sens. Actuators B 56, 106 (1999), DOI: 10.1016/S0925-4005(99)00187-2. Crossref, Web of Science, Google Scholar
G. D. Franciaet al., Sens. Actuators B 112, 135 (2005). Google Scholar
K. M. S. Khalil and S. A. Makhlouf, Sens. Actuators A 148, 39 (2008). Crossref, Web of Science, Google Scholar
S. A. Makhlouf and K. M. S. Khalil, Solid State Ionics 164, 97 (2003), DOI: 10.1016/S0167-2738(03)00307-2. Crossref, Web of Science, Google Scholar
Q. Qiet al., Sens. Actuators B 135, 255 (2008), DOI: 10.1016/j.snb.2008.08.036. Crossref, Web of Science, Google Scholar
N. Koshizaki, K. Yasumoto and T. Sasaki, Nanostruct. Mater. 12, 971 (1999), DOI: 10.1016/S0965-9773(99)00280-9. Crossref, Google Scholar
V. Musatet al., Thin Solid Films 516, 1499 (2008), DOI: 10.1016/j.tsf.2007.07.197. Crossref, Web of Science, Google Scholar
O. A. Fouad, G. Glaspell and M. S. El-Shall, Nano 5, 185 (2010), DOI: 10.1142/S1793292010002098. Link, Web of Science, Google Scholar
X. Luet al., J. Solid State Chem. 183, 1555 (2010), DOI: 10.1016/j.jssc.2010.04.031. Crossref, Web of Science, Google Scholar
X. J. Yinet al., J. Alloys Compd. 479, 372 (2009), DOI: 10.1016/j.jallcom.2008.12.070. Crossref, Web of Science, Google Scholar
S. Lambertet al., Microporous Mesoporous Mater. 115, 609 (2008), DOI: 10.1016/j.micromeso.2008.03.003. Crossref, Web of Science, Google Scholar
W. Fuet al., Mater. Chem. Phys. 100, 246 (2006), DOI: 10.1016/j.matchemphys.2005.12.037. Crossref, Web of Science, Google Scholar
P. B. Wagh and S. V. Ingale, Ceram. Int. 28, 43 (2002), DOI: 10.1016/S0272-8842(01)00056-6. Crossref, Web of Science, Google Scholar
M. Ando, T. Kobayashi and M. Haruta, Sens. Actuator B 32, 157 (1996), DOI: 10.1016/0925-4005(96)80125-0. Crossref, Web of Science, Google Scholar
C. Cantaliniet al., Sens. Actuators B 108, 184 (2005), DOI: 10.1016/j.snb.2004.11.073. Crossref, Web of Science, Google Scholar
O. A. Fouadet al., Mater. Chem. Phys. 128, 70 (2011), DOI: 10.1016/j.matchemphys.2011.02.072. Crossref, Web of Science, Google Scholar
N. J. Tanget al., Mater. Lett. 59, 1723 (2005), DOI: 10.1016/j.matlet.2005.01.051. Crossref, Web of Science, Google Scholar
S. Pokhrel, B. Jeyaraj and K. S. Nagaraja, Mater. Lett. 57, 3543 (2003), DOI: 10.1016/S0167-577X(03)00122-8. Crossref, Web of Science, Google Scholar
J. J. Vijayaet al., Sens. Actuators B 127, 619 (2007), DOI: 10.1016/j.snb.2007.05.021. Crossref, Web of Science, Google Scholar
G. Ortega-Zarzosaet al., J. Sol–Gel Sci. Technol. 24, 23 (2002), DOI: 10.1023/A:1015105414916. Crossref, Web of Science, Google Scholar
K. S. W. Singet al., Pure Appl. Chem. 57, 603 (1985), DOI: 10.1351/pac198557040603. Crossref, Web of Science, Google Scholar
R. Takahashiet al., Microporous Mesoporous Mater. 66, 197 (2003), DOI: 10.1016/j.micromeso.2003.09.007. Crossref, Web of Science, Google Scholar
Y.-J. Linet al., J. Non-Cryst. Solids 352, 789 (2006), DOI: 10.1016/j.jnoncrysol.2006.02.001. Crossref, Web of Science, Google Scholar
J. Estellaet al., Sens. Actuators B 149, 122 (2010), DOI: 10.1016/j.snb.2010.06.012. Crossref, Web of Science, Google Scholar
P. Chauhan, S. Annapoomi and S. K. Trikha, Thin Solid Films 346, 266 (1999), DOI: 10.1016/S0040-6090(98)01771-4. Crossref, Web of Science, Google Scholar
Y. Zhanget al., Appl. Surf. Sci. 242, 212 (2005), DOI: 10.1016/j.apsusc.2004.08.013. Crossref, Web of Science, Google Scholar
X. Liuet al., Sens. Actuators B 150, 442 (2010), DOI: 10.1016/j.snb.2010.05.033. Crossref, Web of Science, Google Scholar
W. Genget al., Sens. Actuators B 127, 323 (2007), DOI: 10.1016/j.snb.2007.04.021. Crossref, Web of Science, Google Scholar
Z. Wanget al., J. Power Sources 190, 351 (2009), DOI: 10.1016/j.jpowsour.2008.08.078. Crossref, Web of Science, Google Scholar

Journal cover image

Vol. 07, No. 05

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Downloaded 170 times

History

Received 4 June 2012

Accepted 6 August 2012

Published: 17 September 2012

Keywords