Thermal decomposition behaviors of PVP coated on platinum nanoparticles
Thermal decomposition behaviors of PVP coated on platinum nanoparticles
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DOI：
10.1002/app.21886
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发表时间：
2006-01-05
影响因子：
3
通讯作者：
Jiang, L
中科院分区：
文献类型：
--
作者：
Du, YK;Yang, P;Jiang, L
采用TG-DTA、TEM、IR等方法研究了聚乙烯吡咯烷酮（PVP）的热分解行为。TG-DTA结果表明，PVP在Pt上的热分解行为与纯PVP有很大不同。对于纯PVP，当温度升高到500 ℃时，95.25%被分解;而在相同的实验条件下，Pt纳米颗粒上包覆的PVP仅分解66.7%。IR测量进一步支持了这一点。TEM结果表明，部分分解的PVP仍然起到稳定Pt纳米颗粒的作用：在500 ℃下加热处理半小时后，Pt纳米颗粒没有严重聚集。(c)2005 Wiley Periodicals，Inc.
TG-DTA, TEM, and IR were used to investigate the thermal decomposition behavior of poly(N-vinyl-2-pyrrolidone) (PVP). The TG-DTA results show that the thermal decomposition behavior of PVP on platinum (Pt) is quite different from that of pure PVP. For pure PVP, 95.25% is decomposed when the temperature is increased up to 500 degrees C; while under the same experimental condition, PVP coated on the Pt nanoparticles is only 66.7% decomposed. This is further supported by IR measurement. TEM results exhibited that the partially decomposed PVP still plays a role in stabilizing Pt nanoparticles: after heating treatment at 500 degrees C for half an hour, the platinum nanoparticles did not aggregate heavily. (c) 2005 Wiley Periodicals, Inc.