银纳米颗粒的原位可控合成：辐照诱导Ag2V4O11纳米带的表面偏析

In-situ controllable synthesis of Ag nanoparticles: irradiation induced surface segregation of Ag2V4O11 nanobelt.

作者信息

Lu Chunliang, Han Ling, Ding Weiping, Yang Gang, Guo Xuefeng, Hou Wenhua

机构信息

Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China.

出版信息

J Nanosci Nanotechnol. 2009 Nov;9(11):6554-9. doi: 10.1166/jnn.2009.1305.

DOI:10.1166/jnn.2009.1305

PMID:19908564

Abstract

Ag2V4O11 nanobelt has been synthesized through a hydrothermal process and its surface segregation leading to the in-situ controllable synthesis of Ag nanoparticles under different irradiation conditions is investigated. The resulted materials are characterized by XRD, TEM, HRTEM, and SAED measurements. It is found that well-distributed Ag nanoparticles with a controlled average diameter in the range of 2-50 nm can be formed in-situ and self-loaded on the surface of Ag2V4O11 nanobelt. The segregation mechanism is also discussed in detail. The silver vanadium salt with self-loaded Ag nanoparticles may find application in catalysis and lithium batteries.

摘要

通过水热法合成了Ag2V4O11纳米带，并研究了其表面偏析在不同辐照条件下原位可控合成银纳米颗粒的情况。通过X射线衍射（XRD）、透射电子显微镜（TEM）、高分辨率透射电子显微镜（HRTEM）和选区电子衍射（SAED）测量对所得材料进行了表征。结果发现，可以原位形成平均直径可控在2至50纳米范围内且分布均匀的银纳米颗粒，并自负载在Ag2V4O11纳米带表面。还详细讨论了偏析机制。负载有银纳米颗粒的银钒盐可能在催化和锂电池中得到应用。