Nanoplates and nanostars of β-PbO formed at the air/water interface

被引：35

作者：

Chen, Kuang-Cai ^{[1
,2
]}

Wang, Chang-Wei ^{[1
,3
]}

Lee, Yong-Ill ^{[2
]}

Liu, Hong-Guo ^{[1
]}

机构：

[1] Shandong Univ, Educ Minist, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China

[2] Changwon Natl Univ, Dept Chem, Chang Won 641773, South Korea

[3] Environm Monitoring Ctr Shandong Prov, Jinan 250013, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2011年 / 373卷 / 1-3期

关键词：

PbO; Nanoparticle; Nanoplate; Nanostar; Air/water interface; LIGHT-EMITTING-DIODES; LIQUID-LIQUID INTERFACE; LANGMUIR-BLODGETT-FILMS; ROOM-TEMPERATURE; THIN-FILMS; POLYMERS; NANORODS; NANOCOMPOSITE; ENHANCEMENT; COMPLEX;

D O I：

10.1016/j.colsurfa.2010.10.035

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nanoparticles with different shapes were prepared at the air/water interface via hydrolysis of Pb2+ ions under Langmuir films of poly(N-vinylcarbazole) (PVK) at 30-50 degrees C. It was found that round or irregular nanoparticles with the size of several to several tens of nanometers were formed when the PbCl2 aqueous solution with the concentration of 1 x 10(-3) mol L-1 was used as subphase, while single-crystalline quasi-hexagonal nanoplates, nanostars and dendrites with the size of several hundreds of nanometers were obtained when the subphase concentration was 1 x 10(-4) mol L-1. Analysis on the selective-area electron diffraction (SAED) patterns revealed that the formed nanoparticles are beta-PbO. The formation of the nanostructures should be attributed to the formation and dehydration of lead hydroxide, diffuse-limited growth and aggregation of nanoparticles at the air/water interface. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：124 / 129

页数：6

共 30 条

[1] Synthesis, fabrication and characterization of poly[3-3′(vinylcarbazole)] (PVK) Langmuir- Schaefer films [J].