Thermal stability of Sb/Sb2O3 composite nanoparticles

Thermal stability of Sb/Sb2O3 composite nanoparticles
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Sb/Sb2O3复合纳米粒子的热稳定性

DOI:
10.1016/j.matchemphys.2005.07.033
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发表时间:
2006-04
影响因子:
4.6
通讯作者:
W.L. Song
W.L. Song
中科院分区:
材料科学3区
文献类型:
--
作者:
D.W. Zeng;X. Chen;R. Jiang;C.S. Xie;B.L. Zhu;W.L. Song

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采用感应加热与激光加热相结合的方法制备了球形Sb/Sb{sub 2}O{sub 3}复合纳米粒子,其粒径约为80 nm。在80 kV电子束照射3 min后,纳米粒子被焊接到Y型纳米棒中,表明纳米粒子的不稳定性。此外,在{>=}400 ℃退火后,Sb/Sb{sub 2}O{sub 3}纳米粒子在空气中1h时表现出热不稳定性。随着退火温度从400 ℃升高到600 ℃,纳米粒子的形状由球形纳米粒子、规则多边形纳米粒子、不规则多边形微粒转变为矛状微粒。C.超过500度C时,其中的Sb含量完全消失。Sb/Sb{sub 2}O{sub 3}纳米颗粒内部的金属Sb是其不稳定性的原因。
Spherical Sb/Sb{sub 2}O{sub 3} composite nanoparticles {approx}80 nm in diameter were synthesized by innovated hybrid induction and laser heating (HILH). Under the irradiation of 80 kV electronic beams for 3 min, the aligned nanoparticles were welded into the Y-type nanorods, indicating their instability. Moreover, after annealed at {>=}400 deg. C for 1 h in air, the Sb/Sb{sub 2}O{sub 3} nanoparticles exhibit thermal instability. Their shape varies from the spherical nanoparticles, through the regular polygon nanoparticles, irregular polygon microparticles into the spear-like microparticles, as the annealing temperature increases from 400 to 600 deg. C. Beyond 500 deg. C, the Sb content inside them completely disappears. The metallic Sb inside the Sb/Sb{sub 2}O{sub 3} nanoparticles is responsible for their instability.
DOI: 10.1016/s0167-577x(03)00476-2
发表时间: 2004
期刊: Materials Letters
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