Synthesis of hierarchically structured ZnO spheres by facile methods and their photocatalytic deNOx properties

Yuelin Wei, Yunfang Huang, Jihuai Wu, Min Wang, Chongshen Guo, Dong Qiang, Shu Yin, Tsugio Sato

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

This paper presents novel and facile methods for the fabrication of a series ZnO spheres by template-free, carbon template and hydrated-salt assisted solvothermal process, respectively. Phase purity and crystalline structure of the products were studied by X-ray diffraction analysis. SEM was employed to investigate the morphology and the fabrication of the monodisperse. BET analysis revealed that the as-prepared samples possessed huge specific surface area. UV-vis diffuse reflectance spectroscopy showed that these ZnO hollow spheres have a higher absorption. The as-prepared samples showed excellent photocatalytic activity for the decomposition of NOx gas under both visible-light and UV light irradiation (λ>510, 400, 290nm), being superior to that of commercial TiO2 powders.

Original languageEnglish
Pages (from-to)202-210
Number of pages9
JournalJournal of Hazardous Materials
Volume248-249
Issue number1
DOIs
Publication statusPublished - 2013 Mar 5

Keywords

  • Hierarchical structure
  • Photocatalytic activity
  • ZnO

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

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