Journal of Sol-Gel Science and Technology

, Volume 66, Issue 3, pp 399–405 | Cite as

Degradation of organic dye using ZnO nanorods based continuous flow water purifier

  • Yim-Leng Chan
  • Swee-Yong Pung
  • Srimala Sreekantan
Original Paper


Zinc oxide (ZnO) is a common semiconductor material uses in waste water treatment. However, utilizing of ZnO particles could be easily drained away by water and charged into the water system during the photocatalytic treatment. This could result of forming secondary pollution in the water system. Hence, it is necessity to grow ZnO nanorods on polyethylene terephthalate (PET) fiber to minimize the above mentioned problem. In this work, ZnO nanorods were grown on the flexible PET fiber in large quantity using a sol–gel method at low temperature (90 °C). A layer of 1-dodacanethiol polymer was per-coated on the PET fiber to improve the deposition of ZnO seed layer prior to the growth of ZnO nanorods. The PET fiber was covered with high areal density of ZnO nanorods (10.2 ± 0.8 NRs/μm2). Subsequently, this PET fiber was inserted into a glass tube for the setup of continuous flow water purifier. The photocatalytic study for degradation of Rhodamine B solution using this setup indicated that the reaction followed 1st order kinetic with rate constant of 1.28 h−1. The ZnO nanorods were still intact with the fiber after the photocatalytic study. Thus, it is possible to upscale this setup as water purifier to purify the water system.


Inorganic materials Crystal growth Sol–gel process Catalyst 



The authors would like to acknowledge the financial support from Nippon Sheet Glass Foundation (304/PBAHAN/6050237/N100) to conduct this project.

Supplementary material

10971_2013_3022_MOESM1_ESM.docx (649 kb)
Supplementary material 1 (DOCX 649 kb)


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Yim-Leng Chan
    • 1
  • Swee-Yong Pung
    • 1
  • Srimala Sreekantan
    • 1
  1. 1.School of Materials and Mineral Resources Engineering, Engineering CampusUniversiti Sains Malaysia, Seri AmpanganNibong TebalMalaysia

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