Synthesize and Characterization of Hollow and Core/Shell Based on CeO2 as a Alcohol Sensor

Journal of Nanoanalysis

مقاله 3، دوره 4، شماره 4، اسفند 2017، صفحه 280-289   

نوع مقاله: Original Research Paper

شناسه دیجیتال (DOI): 10.22034/jna.2017.539993

نویسندگان

Zahra Rasouli¹؛ Mohammad Yousefi¹؛ Susan Samadi²؛ Khadijeh Kalateh³؛ Maryam Bikhof Torbati²

¹Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran

²Department of Chemistry, College of Basic Science, Yadegar-e-Imam Khomeini (RAH) Shahr-e-Rey Branch, Islamic Azad University, Tehran, Iran.

³Department of Chemistry, College of Basic Science, Yadegar-e-Imam Khomeini (RAH) Shahr-e-Rey Branch, Islamic Azad University, Tehran, Iran

چکیده

In this study, CeO2 hollow spherical nanoparticles, CeO2/SiO2 @ CeO2 core/shell composites,
and hollow CeO2/SiO2 sensors were synthesized and their microstructures were researched by
FT-IR, XRD, FESEM, EDX and BET analyses. The peaks observed in the FT-IR spectra of the synthesized
samples corresponded to Ce-O stretching vibration (ca. 566 cm-1) and O-Si-O bending
vibration (ca. 470 cm-1). XRD diffraction patterns showed peaks at 2θ values in the 28.95° ,
33.74°, 47.75° , 57.04°, 59.52° ,and 69.4° confirming cubic phase of CeO2. The FESEM images
showed that the particle shape was approximately spherical. The results of BET showed that,
surface area of the CeO2 hollow spherical nanoparticles, CeO2/SiO2 @ CeO2 and hollow CeO2/
SiO2 core/shell particles were 102.78, 80.49, and 119.71 m2/g, respectively. The nanosized
metal oxides were used to quantitatively and qualitatively identify 1-propanol, 2-propanol,
ethanol and methanol. The results showed that, the hollow CeO2/SiO2 core/shell was of larger
potentials for qualitative identification of 1-propanol and quantitative measurement of 2
-propanol and ethanol.

کلیدواژه‌ها

Cerium dioxide؛ Core/Shell؛ Hollow؛ sensor؛ Volatile organic compounds