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Nanotubes

Breakthrough in Nanotechnology: Synthesis of Titanium Dioxide Nanotubes for Efficient Photocatalytic Water Treatment

Strategic Insights

— 1 min read

Researchers at Universiti Sains Malaysia have made a significant discovery in the field of nanotechnology, revealing a novel method for synthesizing titanium dioxide nanotubes on Ti-Ni alloys. This breakthrough has promising implications for efficient and sustainable photocatalytic water treatment applications. The study, published in ACS Omega, demonstrated the synthesis of nanotubes with enhanced photocatalytic performance, achieving complete removal of toxic chromium (VI) from wastewater under sunlight and UV light.

Key Takeaways:

  • The research team successfully synthesized titanium dioxide nanotubes on Ti-Ni alloys using the powder metallurgy method and anodization process.
  • The Ti-10%Ni sample exhibited exceptional photocatalytic performance, achieving 100% Cr(VI) removal under sunlight in 90 minutes and under UV in 60 minutes.
  • The introduction of nickel doping and titanium-induced midgap states in the TiO2 nanotubes significantly improved photocatalytic activity, outperforming undoped TiO2.
  • The study attributed the enhanced activity to synergistic effects of Ni doping, Ti-induced midgap states, and suppressed charge recombination.
  • The novel method offers a promising route for efficient and sustainable photocatalytic water treatment applications.
  • The research team included Navid Mirzakhani, Nurhaswani Alias, Zuhailawati Hussain, Wai Kian Tan, Go Kawamura, Atsunori Matsuda, and Zainovia Lockman.

Statistics:

  • 100% Cr(VI) removal achieved by the Ti-10%Ni sample under sunlight in 90 minutes.
  • 70% Cr(VI) removal achieved by undoped TiO2 under UV light in 60 minutes.
  • 2.31 eV bandgap of pure TiO2 reduced to 1.65 eV after nickel doping.
  • 90 minutes reduction in Cr(VI) removal time under sunlight using the Ti-10%Ni sample.

Sources:

  • Formation of Titanium Dioxide Nanotubes on Ti-Ni Alloys by Anodization for Cr(VI) Removal from Wastewater. ACS Omega, 2025;10(40):47038-47050.
  • NewsRx. Studies from University Sains Malaysia Reveal New Findings on Nanotubes [Formation of Titanium Dioxide Nanotubes on Ti-Ni Alloys by Anodization for Cr(VI) Removal from Wastewater]. Nanotechnology Weekly. November 3, 2025; p 4849.
  • Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA.

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