Preparation of ZnO nanoparticles by thermal decomposition of zinc alginate

被引：100

作者：

Baskoutas, Sotirlos

Giabouranis, Panayotis

Yannopoulos, Spyros N.

Dracopoulos, Vassihos

Toth, Lajos

Chrissanthopoulos, Athanassios

Bouropoulos, Nikolaos ^{[1
]}

机构：

[1] Univ Patras, Dept Mat Sci, GR-26504 Patras, Greece

[2] FORTH, ICE HT, GR-26504 Patras, Greece

[3] Res Inst Tech Phys & Mat Sci, H-1525 Budapest, Hungary

来源：

THIN SOLID FILMS | 2007年 / 515卷 / 24期

关键词：

zinc oxide; semiconductors; nanocrystals; synthesis;

D O I：

10.1016/j.tsf.2007.03.150

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A new method to produce zinc oxide nanocrystals is presented. The method is based on the thermal decomposition of zinc alginate gels. The gels were produced in the form of beads by ionic gelation between a zinc solution and sodium alginate. The wet beads were heated at 800 and 450 degrees C for 24 h and the products were characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and Transmission electron microscopy (TEM) and micro-Raman spectroscopy. XRD analysis showed that all obtained samples are of wurtzite structure. TEM analysis combined with electron diffraction also showed the presence of single crystals indexed as ZnO hexagonal phase. Crystal size was determined by measuring individual crystals from SEM pictures. It was found that heating temperature and the kind of zinc agent influence the crystal size. Raman scattering revealed the existence of defects in the structure of nanoparticles whose cringing was discussed in the context of recent studies in this field. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：8461 / 8464

页数：4

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