超细纳米Pd粒子与聚乙烯吡咯烷酮的相互作用

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (5): 881.

超细纳米Pd粒子与聚乙烯吡咯烷酮的相互作用

王艳丽¹, 谭德新², 徐国财², 张明旭¹, 张宏艳¹

1. 安徽理工大学材料科学与工程学院,
2. 化学工程学院, 淮南 232001

收稿日期:2009-09-14 出版日期:2010-05-10 发布日期:2010-05-10
通讯作者: 王艳丽, 女, 讲师, 主要从事聚合物基复合材料及其环境应用研究. E-mail:ylwang1998@163.com
基金资助:
安徽省高校自然科学基金(批准号: KJ2009B054Z, KJ2009B120Z)资助.

Interaction Between Ultrafine Nano-Pd and Poly(vinylpyrrolidone)

WANG Yan-Li^1*, TAN De-Xin², XU Guo-Cai², ZHANG Ming-Xu¹, ZHANG Hong-Yan¹

1. Institute of Materials Science and Engineering,
2. Institute of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, China

Received:2009-09-14 Online:2010-05-10 Published:2010-05-10
Contact: WANG Yan-Li. E-mail:ylwang1998@163.com
Supported by:
安徽省高校自然科学基金(批准号: KJ2009B054Z, KJ2009B120Z)资助.

摘要/Abstract

摘要：

在微量聚乙烯吡咯烷酮(PVP)存在下, 利用超声还原氯化钯水溶液, 制备出超细纳米Pd颗粒, 用高分辨透射电镜、红外光谱、紫外-可见光谱和X射线光电子能谱等技术对其表面形貌及结构进行了表征. 结果表明, 纳米Pd粒子的粒径均一, 大约为3 nm. 纳米Pd/PVP复合粉末的羰基红外吸收峰比PVP的羰基吸收峰红移9 cm^-1; 且当超声反应50 min时, PVP紫外吸收波峰蓝移16 nm, 表明了纳米Pd与PVP之间存在一定的相互作用力. XPS结果证明, 纳米Pd与PVP的羰基基团通过配位作用使超细纳米Pd粒子得以稳定分散存在.

关键词: 超细纳米Pd; 聚乙烯吡咯烷酮; 氯化钯; 超声

Abstract:

Ultrafine nano-Pd particles were prepared by ultrasonic without gas protection and reductant in the palladium(Ⅱ) chloride aqueous solution by the addition of a small quantity of poly(vinylpyrrolidone)(PVP); The samples were characterized by high-resolution transmission electron microscopy(HRTEM), Fourier transform infrared(FTIR) spectroscopy, ultraviolet-visible(UV-Vis) spectroscopy and X-ray photoelectron spectrum(XPS). The nano-Pd particles with a uniform size of a diameter of 3 nm were observed by HRTEM. FTIR analysis shows that the characteristic peak of carbonyl in the nano-Pd/PVP composites shifted 9 cm^-1 to a lower frequency in comparison with that of the PVP. The results of UV-Vis spectroscopy show that the absorption peak of PVP shifted 16 nm to short wavelength after 50 min ultrasonic. Therefore, there are interactions between Pd and PVP. Based on the proving by XPS, the interactions were formed between the carbonyl group in the composites and the palladium atoms, and were considered to be of coordination and enabled nano-palladium particles to be dispersed stably.

Key words: Ultrafine nano-Pd; Poly(vinylpyrrolidone); Palladium(Ⅱ) chloride; Ultrasonic

TrendMD:

王艳丽, 谭德新, 徐国财, 张明旭, 张宏艳. 超细纳米Pd粒子与聚乙烯吡咯烷酮的相互作用. 高等学校化学学报, 2010, 31(5): 881.

WANG Yan-Li*, TAN De-Xin, XU Guo-Cai, ZHANG Ming-Xu, ZHANG Hong-Yan. Interaction Between Ultrafine Nano-Pd and Poly(vinylpyrrolidone). Chem. J. Chinese Universities, 2010, 31(5): 881.