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<p>Owing to the presence of redox-active metallic sites, analogues of Prussian blue (PB) have been acted as the prominent catalyst material with wide range of applications. In this context, we attempted an inexpensive one-pot synthesis of silver (Ag) based Prussian blue (APB) and nickel (Ni) based Prussian blue (NPB) analogues using citric acid. Citric acid reduced some of the Fe<sup>3+</sup> ions of ferricyanide into Fe<sup>2+</sup> and facilitated the effective formation of PB analogues, which is evaluated for the discrimination of phenol. The findings of this study depicted the cubic phase of synthesized analogues and the band gap values of APB and NPB were found to be 2.66 and 2.89&#xa0;eV respectively. The reduced band gap of APB compared to NPB has assumed with the slender structural distortion from the ideal cubic phase. During the calorimetric study, NPB has estimated as a better-performing catalyst in the colorimetric detection of phenol with a detection limit of 81.4 µM. The synthesized Prussian blue analogues were also subjected to the antibacterial screening against pathogens like V. <i>alginolyticus</i> (Stain No. KY972126.1) and B. <i>cereus</i> (Stain No. OR351395.1), where they depict the maximum inhibition efficiency of the PB analogues at a higher concentration of 100&#xa0;µg/mL successfully.</p>

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One-pot synthesis of Prussian blue analogues for oxidative biomimetic activity towards effective discrimination of phenol and antibacterial screening

  • 期刊论文

  • 发表日期：

    2026年4月2日

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  • J. Hemalatha,
  • C. Senthamil,
  • J. J. Umashankar,
  • K. Preethi,
  • C. Sakthivel,
  • S. Almaas,
  • I. Prabha

摘要

Owing to the presence of redox-active metallic sites, analogues of Prussian blue (PB) have been acted as the prominent catalyst material with wide range of applications. In this context, we attempted an inexpensive one-pot synthesis of silver (Ag) based Prussian blue (APB) and nickel (Ni) based Prussian blue (NPB) analogues using citric acid. Citric acid reduced some of the Fe3+ ions of ferricyanide into Fe2+ and facilitated the effective formation of PB analogues, which is evaluated for the discrimination of phenol. The findings of this study depicted the cubic phase of synthesized analogues and the band gap values of APB and NPB were found to be 2.66 and 2.89 eV respectively. The reduced band gap of APB compared to NPB has assumed with the slender structural distortion from the ideal cubic phase. During the calorimetric study, NPB has estimated as a better-performing catalyst in the colorimetric detection of phenol with a detection limit of 81.4 µM. The synthesized Prussian blue analogues were also subjected to the antibacterial screening against pathogens like V. alginolyticus (Stain No. KY972126.1) and B. cereus (Stain No. OR351395.1), where they depict the maximum inhibition efficiency of the PB analogues at a higher concentration of 100 µg/mL successfully.