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This study used a chemical precipitation method to prepare zinc oxide (ZnO) nanoparticles for their controlling properties and applications. The thermal stability of the as-prepared sample was found beyond 465 ℃ without any additional peaks. The XRD patterns reveal that the samples exhibit a pure phase of hexagonal wurtzite structure with an average crystallite size of 23 nm–29 nm. The optical band-gap energy of zinc oxide nanoparticles decreases from 3.31 eV to 3.19 eV after calcination of the samples. The ZnO photocatalyst accelerates the photodegradation of MB dye due to oxygen-deprivation conditions, which act as electron traps, gather charge carriers, and delay the recombination process. Findings from CV and GCD indicate excellent electrochemical performance with pseudocapacitance behavior of all the electrodes. From all the analysis, it is evident that ZnO nanoparticles are effective materials for the treatment of organic pollutant dye and supercapacitor applications.

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Optimizing Zinc Oxide Nanoparticles for Enhanced Photocatalytic and Supercapacitor Performance

  • 会议论文

  • 发表日期：

    2026年

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  • Yengkokpam Robinson,
  • Y. Shyamkesho Singh,
  • T. Sathishpriya,
  • P. Sakthivel

摘要

This study used a chemical precipitation method to prepare zinc oxide (ZnO) nanoparticles for their controlling properties and applications. The thermal stability of the as-prepared sample was found beyond 465 ℃ without any additional peaks. The XRD patterns reveal that the samples exhibit a pure phase of hexagonal wurtzite structure with an average crystallite size of 23 nm–29 nm. The optical band-gap energy of zinc oxide nanoparticles decreases from 3.31 eV to 3.19 eV after calcination of the samples. The ZnO photocatalyst accelerates the photodegradation of MB dye due to oxygen-deprivation conditions, which act as electron traps, gather charge carriers, and delay the recombination process. Findings from CV and GCD indicate excellent electrochemical performance with pseudocapacitance behavior of all the electrodes. From all the analysis, it is evident that ZnO nanoparticles are effective materials for the treatment of organic pollutant dye and supercapacitor applications.