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Growth Time Dependence On Photoelectrochemical Property Of Zinc Oxide Nanorods Prepared By Hydrothermal Synthesis

Author

Listed:
  • PRAPAKORN RATTANAWARINCHAI

    (College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520, Thailand)

  • NARATHON KHEMASIRI

    (College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520, Thailand†Thailand Center of Excellence in Physics, Commission on Higher Education, Ministry of Education, Bangkok 10400, Thailand)

  • SUKITTAYA JESSADALUK

    (College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520, Thailand)

  • CHANUNTHORN CHANANONNAWATHORN

    (#x2021;National Electronics and Computer Technology Center, National Scienceand Technology Development Agency, Patumthani 12120, Thailand)

  • MATI HORPRATHUM

    (#x2021;National Electronics and Computer Technology Center, National Scienceand Technology Development Agency, Patumthani 12120, Thailand)

  • ANNOP KLAMCHUEN

    (#xA7;National Nanotechnology Center, National Science and Technology Development Agency, Patumthani 12120, Thailand)

  • NAVAPHUN KAYUNKID

    (College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520, Thailand†Thailand Center of Excellence in Physics, Commission on Higher Education, Ministry of Education, Bangkok 10400, Thailand)

  • SAKON RAHONG

    (College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520, Thailand†Thailand Center of Excellence in Physics, Commission on Higher Education, Ministry of Education, Bangkok 10400, Thailand¶ImPACT Research Center for Advanced Nanobiodevices, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan)

  • DARINEE PHROMYOTHIN

    (College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520, Thailand)

  • JITI NUKEAW

    (College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520, Thailand†Thailand Center of Excellence in Physics, Commission on Higher Education, Ministry of Education, Bangkok 10400, Thailand)

Abstract

Here, the dependence of growth time on the growth behavior, morphology and photoelectrochemical (PEC) properties of ZnOnanorods (ZnO-NRs) as a photoanode are demonstrated. Vertical-aligned ZnO-NRs with c-axis perpendicular to substrate were accomplished via seed-assisted hydrothermal technique at the growth time varying between 0.5 and 24h. Growth behaviors of ZnO-NRs can be described into three regimes, which consist of the nucleation stage, ZnO-NRs growth and saturation growth, respectively. ZnO nanoparticles (NPs) corresponding to the nucleation site occur at the growth time below 1h. Afterward, the growth regime of ZnO-NRs, which originated from the competition between the vertical and the lateral growth, is clearly observed, and leads to increase in length and diameter. The whole growth of ZnO-NRs is terminated after 16h, attributed to low amount of Zn2+ and OH− supplied from growth solution. PEC measurement reveals the fast solar response and high photostability of ZnO-NRs. Additionally, the photoconversion efficiency (η) improves with the growth time of 4h and degrades for longer time due to the change of total surface area. The maximum η of 0.13% at 0.63VRHE is obtained for the growth time of 4h. Our results highlight that the growth time plays a crucial role in controlling growth behavior and the total surface area directly related with the PEC properties of ZnO-NRs.

Suggested Citation

  • Prapakorn Rattanawarinchai & Narathon Khemasiri & Sukittaya Jessadaluk & Chanunthorn Chananonnawathorn & Mati Horprathum & Annop Klamchuen & Navaphun Kayunkid & Sakon Rahong & Darinee Phromyothin & Ji, 2018. "Growth Time Dependence On Photoelectrochemical Property Of Zinc Oxide Nanorods Prepared By Hydrothermal Synthesis," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 25(Supp01), pages 1-7, December.
    • Handle: RePEc:wsi:srlxxx:v:25:y:2018:i:supp01:n:s0218625x18400012
    DOI: 10.1142/S0218625X18400012
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