Malaysian Journal of Analytical Sciences Vol 18 No 3 (2014): 718 - 723

 

 

 

STUDY ON THE STRUCTURE, TEXTURE AND THERMAL STABILITY OF CeZrYO₂ NANOPARTICLES SYNTHESIZED VIA MICROEMULSION METHOD

 

(Kajian Terhadap Struktur, Tekstur dan Kestabilan Termal CeZrYO₂ Nanopartikel Disintesis Melalui Kaedah Microemulsi)

 

Abdul Hadi¹*, M. Nazri Abu Shah¹, Noraakinah Hassan¹, S. Azurah Suliman¹, S. Hanim Md Nor¹, Mahidin², Kamariah Noor Ismail¹

 

¹Faculty of Chemical Engineering,

Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia

²Department of Chemical Engineering,

Syiah Kuala University, 23111 Banda Aceh, Indonesia

 

*Corresponding author: hadi9598@salam.uitm.edu.my

 

 

Abstract

The CeZrYO₂ (CZY) was synthesized via microemulsion method. Phase structure, texture, and thermal stability of CZY nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), N₂ adsorption-desorption and thermogravimetric Analysis (TGA). XRD analysis confirmed the cubic phase and homogeneous solid solution of CZY nanoparticles formed. TEM micrograph also revealed the CZY nanoparticles well-defined crystallite, spherical shaped and nanoscale size in range of 5 – 10 nm. The surface area of CZY nanoparticles was 219.50 m²/g and isotherm profile was mesoporous type IV. It was also found that the synthesized CZY nanoparticles remain a good thermal stability, in the range of temperature more than 900^oC according to thermo gravimetric analysis.

 

Keywords: CeZrYO₂, Yttrium, nanoparticles, microemulsion

 

Abstrak

CeZrYO2 (CZY) telah disintesis melalui kaedah mikroemulsi. Struktur fasa, tekstur, dan kestabilan termal nanopartikel CZY dicirikan oleh pembelauan sinar-X (XRD), mikroskop elektron transmisi (TEM), N2 penjerapan - desorpsi dan analisis termogravimetri (TGA). Analisis XRD mengesahkan fasa kubik dan homogen nanopartikel larutan pepejal terbentuk. TEM mikrograf juga mendedahkan nanopartikel CZY kristal terbentuk dengan jelas, berbentuk bulat, dan bersaiz nano dalam lingkungan 5 – 10 nm. Luas permukaan nanopartikel CZY adalah 219.50 m2/g dan isoterma profil adalah mesopori (Jenis IV). Ia juga mendapati bahawa nanopartikel CZY mempunyai kestabilan terma yang baik, dalam lingkungan suhu melebihi 900oC mengikut termogravimetri analisis. 

Kata kunci: CeZrYO2, Yttrium, nanopartikel, microemulsi

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