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<p>This study investigates the synthesis, structural characterization, and multifunctional properties of ZnO nanorods (NRs) synthesized on a single-sided printed circuit board (PCB). ZnO NRs were created using a simple, cost-effective hydrothermal method. The ZnO NRs’ surface morphologies and optical properties were characterized through scanning electron microscopy (SEM), photoluminescence (PL), x-ray diffraction (XRD), and Raman analysis. The ZnO NRs were investigated for their antifungal activity against <i>Candida albicans</i> (<i>C. albicans</i>). In addition, the ZnO NRs were used in conjunction with the ferrous oxidation-xylenol orange (FOX) method for application in nonenzymatic glucose sensing. The findings revealed high crystallinity and superior optical characteristics of ZnO NRs. The antifungal efficacy of ZnO/PCB reached 67.22% under light exposure. Furthermore, the ZnO NR-based glucose sensor demonstrated 41.7% sensitivity and a detection limit of 0.01. The potential of the glucose sensor was confirmed through a high correlation of the glucose concentrations determined by this sensor and by high-performance liquid chromatography (HPLC). Our results underscore the potential of ZnO for multifunctional life science applications.</p> Graphical Abstract <p></p>

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Multifunctional ZnO Nanorods on Printed Circuit Board Substrates: Structural Characterization, Optical Properties, and Life Science Applications

  • 期刊论文

  • 发表日期：

    2025年10月28日

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  • Truong Vu Duong,
  • Thanh Van Pham,
  • Thuy Quynh Mai,
  • Hoang Duong Nguyen,
  • Hanh Hong Mai

摘要

This study investigates the synthesis, structural characterization, and multifunctional properties of ZnO nanorods (NRs) synthesized on a single-sided printed circuit board (PCB). ZnO NRs were created using a simple, cost-effective hydrothermal method. The ZnO NRs’ surface morphologies and optical properties were characterized through scanning electron microscopy (SEM), photoluminescence (PL), x-ray diffraction (XRD), and Raman analysis. The ZnO NRs were investigated for their antifungal activity against Candida albicans (C. albicans). In addition, the ZnO NRs were used in conjunction with the ferrous oxidation-xylenol orange (FOX) method for application in nonenzymatic glucose sensing. The findings revealed high crystallinity and superior optical characteristics of ZnO NRs. The antifungal efficacy of ZnO/PCB reached 67.22% under light exposure. Furthermore, the ZnO NR-based glucose sensor demonstrated 41.7% sensitivity and a detection limit of 0.01. The potential of the glucose sensor was confirmed through a high correlation of the glucose concentrations determined by this sensor and by high-performance liquid chromatography (HPLC). Our results underscore the potential of ZnO for multifunctional life science applications.

Graphical Abstract