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<p>This study explores the solventless synthesis of zinc oxide (ZnO) nanostructures using zinc oleate as a precursor. The process offers a simple and stable route to produce ZnO with controlled morphologies. Thermal decomposition at 350&#xa0;℃ resulted in incomplete conversion, while complete transformation to the zincite phase with a preferred (101) orientation occurred at 400 and 450&#xa0;℃. Scanning electron microscopy revealed nanowires (~ 90 ± 9&#xa0;nm diameter, 12 ± 2&#xa0;µm length) at 400&#xa0;℃ and nano-petals at 450&#xa0;℃, highlighting the effect of temperature on morphology. Energy-dispersive X-ray (EDX) analysis confirmed a near 1:1 Zn to O atomic ratio in both samples. Optical studies showed band gaps of 4.76&#xa0;eV (nanowires) and 4.73&#xa0;eV (nano-petals), both blue-shifted from the bulk ZnO value of 3.44&#xa0;eV, suggesting quantum size effects. These findings indicate that zinc oleate is a promising precursor for ZnO nanostructures with potential applications in optoelectronic devices.</p> Graphical abstract <p></p>

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Facile synthesis of 1D ZnO nanocrystals exploiting zinc oleate single source precursor

  • 期刊论文

  • 发表日期：

    2025年11月3日

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  • Selina Ama Saah,
  • Nathaniel Owusu Boadi,
  • Sonia Quansah,
  • Mary Adams,
  • Mandela Toku

摘要

This study explores the solventless synthesis of zinc oxide (ZnO) nanostructures using zinc oleate as a precursor. The process offers a simple and stable route to produce ZnO with controlled morphologies. Thermal decomposition at 350 ℃ resulted in incomplete conversion, while complete transformation to the zincite phase with a preferred (101) orientation occurred at 400 and 450 ℃. Scanning electron microscopy revealed nanowires (~ 90 ± 9 nm diameter, 12 ± 2 µm length) at 400 ℃ and nano-petals at 450 ℃, highlighting the effect of temperature on morphology. Energy-dispersive X-ray (EDX) analysis confirmed a near 1:1 Zn to O atomic ratio in both samples. Optical studies showed band gaps of 4.76 eV (nanowires) and 4.73 eV (nano-petals), both blue-shifted from the bulk ZnO value of 3.44 eV, suggesting quantum size effects. These findings indicate that zinc oleate is a promising precursor for ZnO nanostructures with potential applications in optoelectronic devices.

Graphical abstract