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<p>Using a green synthesis route based on <i>Mangifera indica</i> (mango) leaf extract, this study successfully produced molybdenum trioxide (MoO<sub>3</sub>) nanorods. X-ray diffraction confirmed the formation of an orthorhombic α-MoO<sub>3</sub> phase with a crystallite size of 15.30 nm<b>.</b> FTIR analysis verified the presence of Mo–O and Mo = O bonding vibrations, while SEM revealed uniformly distributed nanorods with well-defined morphology. The dielectric constant measured at 25°C was approximately 9, with a low temperature coefficient of permittivity <b>(</b>− 89 ppm/°C<b>)</b> over the frequency range 20 Hz–1 MHz<b>,</b> indicating thermal stability suitable for LTCC applications. The material exhibited strong UV absorption with a pronounced peak at 213 nm, high visible transmittance approaching <b>60%</b>, and an optical bandgap of 4.72 eV, confirming its potential for UV-protective coatings, transparent electronics, and optoelectronic devices. Overall, the green-synthesized MoO₃ nanorods demonstrate a sustainable production method with promising structural, dielectric, and optical performance for advanced energy storage and electronic applications.</p>

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Eco-friendly synthesis of high-performance MoO3 nanorods using mango leaf extract for advanced energy storage applications

  • 期刊论文

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  • 发表日期：

    2026年2月24日

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  • Talaat Habeeb,
  • Ali H. Bashal

摘要

Using a green synthesis route based on Mangifera indica (mango) leaf extract, this study successfully produced molybdenum trioxide (MoO3) nanorods. X-ray diffraction confirmed the formation of an orthorhombic α-MoO3 phase with a crystallite size of 15.30 nm. FTIR analysis verified the presence of Mo–O and Mo = O bonding vibrations, while SEM revealed uniformly distributed nanorods with well-defined morphology. The dielectric constant measured at 25°C was approximately 9, with a low temperature coefficient of permittivity (− 89 ppm/°C) over the frequency range 20 Hz–1 MHz, indicating thermal stability suitable for LTCC applications. The material exhibited strong UV absorption with a pronounced peak at 213 nm, high visible transmittance approaching 60%, and an optical bandgap of 4.72 eV, confirming its potential for UV-protective coatings, transparent electronics, and optoelectronic devices. Overall, the green-synthesized MoO₃ nanorods demonstrate a sustainable production method with promising structural, dielectric, and optical performance for advanced energy storage and electronic applications.