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Related Experiment Video

Updated: Jun 3, 2026

Aerosol-assisted Chemical Vapor Deposition of Metal Oxide Structures: Zinc Oxide Rods
06:39

Aerosol-assisted Chemical Vapor Deposition of Metal Oxide Structures: Zinc Oxide Rods

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CuO codoped ZnO based nanostructured materials for sensitive chemical sensor applications.

Mohammed M Rahman1, Aslam Jamal, Sher Bahadar Khan

  • 1Center for Advanced Materials and Nano-Engineering (CAMNE), Faculty of Sciences and Arts, Najran University, P.O. Box 1988, Najran 11001, KSA. mmrahman@nu.edu.sa

ACS Applied Materials & Interfaces
|March 30, 2011
PubMed
Summary

Copper oxide codoped zinc oxide (CuO codoped ZnO) nanostructures were synthesized using cost-effective hydrothermal methods. These nanostructures demonstrate excellent sensitivity and stability for detecting aqueous ammonia, paving the way for efficient chemical sensors.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Chemical Sensing

Background:

  • Semiconductor transition metal-doped nanomaterials offer diverse applications.
  • Hydrothermal synthesis presents cost-effective and environmentally friendly advantages for nanomaterial fabrication.
  • Copper oxide codoped zinc oxide (CuO codoped ZnO) nanostructures are of interest for their unique properties.

Purpose of the Study:

  • To synthesize CuO codoped ZnO nanostructures via a hydrothermal route at room temperature.
  • To characterize the structural and optical properties of the synthesized nanorods.
  • To evaluate the sensing performance of CuO codoped ZnO nanorods for aqueous ammonia detection.

Main Methods:

  • Hydrothermal synthesis for CuO codoped ZnO nanorod growth.
  • Characterization using UV-visible spectroscopy, FT-IR, XRD, and FE-SEM.
  • Sensing performance evaluation using an I-V technique with aqueous ammonia as the target analyte.

Main Results:

  • CuO codoped ZnO nanorods exhibited favorable structural and optical properties.
  • The thin film of nanorods on silver electrodes showed good sensitivity, stability, and reproducibility.
  • A linear calibration plot was observed over a large dynamic range with a sensitivity of approximately 1.549 ± 0.10 μA cm(-2)mM(-1) and a detection limit of 8.9 ± 0.2 μM.

Conclusions:

  • The study successfully synthesized and characterized CuO codoped ZnO nanorods.
  • The developed nanostructures demonstrate efficient chemical sensing capabilities for aqueous ammonia.
  • The findings suggest potential for large-scale application of transition-metal-doped ZnO nanomaterials in chemical sensors.