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Preparation and photocatalytic performance of ZnO nanorods on zinc foil

JI-GUO HUANG1, JI-CHUN SHI1, GANG LIU1, XIAO-DI HU1, LI-LI DONG2,3,* , XIAO-GUANG ZHAO1, XING-JUAN LIU1

Affiliation

  1. Key Laboratory of Groundwater Resources and Environment, Ministry of Education , Jilin University, Changchun 130026, PR China
  2. Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun 130118, PR China
  3. School of Environment, Northeast Normal University, Changchun 130117, PR China

Abstract

ZnO nanorods were prepared by the solution-phase approach and the hydrothermal method directly on zinc foils at low reaction temperature. The composition, morphology of ZnO nanorod structures were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results confirmed that the uniformly sized and highly vertically aligned ZnO nanorod arrays prepared by the solution-phase approach exhibited better photocatalytic activity in the degradation of methylene blue under visible light. While the hydrothermal method only prepared clusters of ZnO nanorod arrays which oriented all kinds of directions and possessed uneven diameters and worse photocatalytic activity. Furthermore, the concentration, temperature and time-dependent experiments to prepare ZnO nanorods were conducted. It could be concluded that the optimum preparing conditions were 0.05 mol/L mixture, 70℃ and 48h, respectively. Moreover, the large-sized ZnO nanorod arrays photocatalysts which possessed relatively good reusable and stable capability could be easily separated. ZnO nanorod arrays prepared by the solution-phase approach were promising photocatalysts which could be potentially applied for pollution disposal with low-cost..

Keywords

ZnO nanorodss, Zinc foils, Photocatalytic, Methylene blue.

Citation

JI-GUO HUANG, JI-CHUN SHI, GANG LIU, XIAO-DI HU, LI-LI DONG, XIAO-GUANG ZHAO, XING-JUAN LIU, Preparation and photocatalytic performance of ZnO nanorods on zinc foil, Optoelectronics and Advanced Materials - Rapid Communications, 8, 7-8, July-August 2014, pp.679-684 (2014).

Submitted at: Feb. 27, 2014

Accepted at: July 10, 2014