Controllable synthesis of ZnO hierarchical architectures and their photocatalytic property

Linxia Fang, Baoliang Zhang, Wei Li, Xiangjie Li, Tinjun Xin, Qiuyu Zhang

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

A facile solution route to synthesize ZnO hierarchical architectures was carried out employing trisodium citrate as structure-directing agent. Three different morphologies and crystal phase samples, including double-layer hexagonal prism ascribed to wurtzite ZnO (JCPDS No. 36-1451), porous microspheres ascribed to an unusual ZnO phase (JCPDS No. 21-1486) and smooth solid amorphous zinc citrate microsphere, were obtained. FESEM, TEM, XRD and FT-IR spectroscope were used to investigate the structure character of the products. The influence of the citrate concentration on ZnO microstructure was studied. It was found that the citrate concentration played a key role in evolution of the morphology and crystal phase. On the basis of experimental results, a possible formation mechanism of the ZnO hierarchical nanostructures was proposed. Photocatalytic property of the samples was evaluated by photodegradation reaction of methylene blue (MB) under UV irradiation. Among these products, double-layer hexagonal prism samples exhibited the highest photocatalytic activity.

Original languageEnglish
Pages (from-to)324-333
Number of pages10
JournalSuperlattices and Microstructures
Volume75
DOIs
StatePublished - Nov 2014

Keywords

  • Photocatalytic activity
  • Trisodium citrate
  • ZnO

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