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Hydrothermal synthesis of CeO2 nano-particles

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Hydrothermal synthesis of CeO2 nano-particles
นักวิจัย : Tok, Alfred Iing Yoong , Boey, Freddy Yin Chiang , Dong, Zhili , Sun, X. L.
คำค้น : DRNTU::Science::Physics::Heat and thermodynamics.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2550
อ้างอิง : Tok, A. I. Y., Boey, F. Y. C., Dong, Z., & Sun, X. L. (2007). Hydrothermal synthesis of CeO2 nano-particles. Journal of Materials Processing Technology, 190(1-3), 217-222. , 0924-0136 , http://hdl.handle.net/10220/9404 , http://dx.doi.org/10.1016/j.jmatprotec.2007.02.042
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Journal of materials processing technology
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Nano-crystalline particles of CeO2 have been synthesized via a low temperature hydrothermal synthesis process. Two types of precursors were studied—cerium hydroxide and ceria acetate. The precursors were adjusted to a basic (pH 10) and acidic (pH 4) medium before hydrothermal treatment at various durations of 6, 12, 18, and 24 h at 250 °C using a Teflon-lined hydrothermal bomb. The synthesized samples were characterized using DTA/TGA, XRD and TEM. Based on the characterization results, both precursor systems produced crystalline ceria nano-particles after 6 h of hydrothermal synthesis at 250 °C. The average crystallite sizes were 6 and 15 nm for the hydroxide and acetate system, respectively. The acetate precursor system appeared to produce better particles in terms of crystallinity and morphology. Based on the DTA/TGA analysis, hydrothermal synthesis had been effective in reducing the amount of intermediate products. With increasing hydrothermal treatment duration of up to 24 h, the samples did not exhibit a remarkable improvement in properties. The synthesized nano-particles were subsequently heat treated at 500 and 1000 °C for 2 h. After the heat treatment, enhanced crystallinity and growth in crystallite size was observed, but particles appeared more agglomerated.

บรรณานุกรม :
Tok, Alfred Iing Yoong , Boey, Freddy Yin Chiang , Dong, Zhili , Sun, X. L. . (2550). Hydrothermal synthesis of CeO2 nano-particles.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Tok, Alfred Iing Yoong , Boey, Freddy Yin Chiang , Dong, Zhili , Sun, X. L. . 2550. "Hydrothermal synthesis of CeO2 nano-particles".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Tok, Alfred Iing Yoong , Boey, Freddy Yin Chiang , Dong, Zhili , Sun, X. L. . "Hydrothermal synthesis of CeO2 nano-particles."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2550. Print.
Tok, Alfred Iing Yoong , Boey, Freddy Yin Chiang , Dong, Zhili , Sun, X. L. . Hydrothermal synthesis of CeO2 nano-particles. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2550.