PENGARUH PENAMBAHAN NiO TERHADAP KARAKTERISTIK KERAMIK FILM TEBAL Fe2O3 UNTUK SENSOR GAS ASETON

E. Suhendi, L. Hasanah, D.S. Gustaman

Abstract


Pembuatan keramik film tebal Fe2O3-NiO telah dilakukan dengan menggunakan Fe2O3 lokal sebagai bahan dasar untuk sensor gas aseton.  Serbuk Fe2O3 dicampur dengan serbuk NiO dengan konsentrasi 0, 10 dan 50% mol secara homogen. Serbuk campuran kemudian dicampur dengan organic vehicle (OV) terbuat dari campuran terpineol dan etil selulose dengan komposisi 75% berat serbuk campuran dan 25% berat OV dan diaduk membentuk pasta. Pasta dilapiskan di atas substrat alumina dengan metode screen printing lalu dibakar pada suhu 900oC selama 90 menit hingga membentuk keramik film tebal. Film tebal dianalisis dengan difraksi sinar-x (XRD) dan mikroskop elektron (SEM). Resistansi listrik keramik film tebal diukur pada berbagai suhu di ruangan berisi udara dan berisi gas aseton. Karakterisasi XRD menunjukkan bahwa struktur kristal yang terbentuk adalah Fe2O3 hematit dan NiFe2O4 kubik spinel sebagai fase kedua untuk penambahan konsentrasi NiO 10% dan 50%. Penambahan NiO diketahui memperkecil ukuran butir film tebal Fe2O3 dan meningkatkan resistansi listriknya. Keramik film tebal yang dibuat sensitif terhadap gas aseton.


Fabrication of thick film Fe2O3-NiO ceramics for acetone gas sensor has been carried out using local Fe2O3as raw material.  The Fe2O3 powder was mixed with NiO powder homogeneously with NiO concentration of 0, 10 and 50 mole %. The mixed powder was then mixed with organic vehicle (OV) made of alpha terpineol and ethyl cellulose with composition of 75 weight % mixed powder and 25 weight % OV forming a paste. The paste was coated on alumina substrates by screen printing method, then fired at 900oC for 90 minutes to produce thick film ceramics. The thick film was analyzed using x-ray diffraction (XRD) and scanning electron microscope (SEM). Resistance of the thick films was measured at different temperatures in chamber containing air and containing acetone gas. XRD characterization showed that the crystal structures are hematite Fe2O3 and NiFe2O4 cubic spinel as second phase for the addition of 10% and 50% NiO concentration. It was known that the addition of NiO decreases grain size of the thick film of Fe2O3 and increases its electrical resistance. The produced thick films were sensitive to acetone gas.


Keywords


Acetone, Fe2O3, gas sensor; NiO; thick film

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References


Hankarea, P. P., Jadhava, S. D., Sankpala, U. B., Patil, R. P., Sasikala, R., & Mullac, I. S. 2009. Gas sensing properties of magnesium ferrite prepared by co-precipitation method. Journal of Alloys and Compounds 488: 270–272

Iftimie, N., Rezlescu, E., Popa, P. D., & Rezlescu, N. 2006. The magnetic oxide semiconducting ceramics as gas sensor. Journal of Optoelectronics and advanced materials, Vol. 8, No. 3: 1001–1003

Patil, L. A. 2009. Fe2O3 - ZnO Based Gas Sensors. Sensors & Transducers Journal, Vol. 104: 68-75

Rezlescu, N., Doroftei, C., Rezlescu, E., & Craus, M. L. 2008. γ-Fe2O3 and γ-Fe2O3-TiO2 ultrafine particle films as reducing gas sensor. Romanian Reports in Physics, Vol. 60, No. 4: 1041–1052

Rezlescu, N., Rezlescu, E., Tudorache, F., & Popa, P. D. 2009. Gas sensing properties of porous Cu-, Cd- and Zn-ferrites. Romanian Reports in Physics, Vol. 61, No. 2: 223–234

Righettoni, M., Tricoli, A., & Pratsinis, S. E. 2010. Si:WO3 Sensors for highly selective detection of acetone for easy diagnosis of diabetes by breath analyses, Analitical Chemistry 82: 3581-3587

Skubal, L. R., Meshkov, N. K., & Vogt, M.C. 2002. Detection and identification of gaseous organics using a TiO2 sensor. Journal of Photochemistry and Photobiology A: Chemistry 148: 103–108

Srivastava, J. K., Pandey, P., Mishra, V. N., & Dwivedi, R. 2011. Structural and micro structural studies of PbO-doped SnO2 sensor for detection of methanol, propanol and acetone. Journal of Natural Gas Chemistry 20:179–183

Wang, S., Wang, L., Yang, T., Liu, X., Zhang, J., Zhu, B., Zhang, S., Huang, W., & Wu, S. 2010. Porous a-Fe2O3 hollow microspheres and their application for acetone sensor. Journal of Solid State Chemistry 183: 2869–2876.




DOI: https://doi.org/10.15294/jpfi.v8i2.2163

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