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<p>In this work, we have developed a novel and sensitive colorimetric sensor by the constructions of hierarchical star-like structure of exfoliated NiO called as NiO-ɤ catalyst with strong peroxidase mimetic properties. The as prepared sensor predicted highest sensing response with wider and linear range of 0.001-0.900 µM, having limit of detection (LOD) and limit of quantification (LOQ) values of 0.09 ± 0.05 nM and 0.63 ± 0.05 nM. In addition, it also manifests astonishing selectivity, ample stability, better reproducibility and excellent practicality. Thus, as a result we concluded that this method is simple, robust, color stable and reliable, and hence provides an effective colorimetric bio-sensing platform for biomedical-diagnosis.</p> Graphical Abstract <p></p>

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Construction of Hierarchical Star Like Morphology of NiO Nanosheets Having Superb Peroxidase Mimetic Properties for Effective Colorimetric H2O2 Sensing

  • 期刊论文

  • 发表日期：

    2025年8月26日

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  • Mohib Ullah,
  • Jasgurpreet Singh Chohan,
  • Prakash Kanjariya,
  • Asha Rajiv,
  • Aman Shankhyan,
  • Helen Merina Albert,
  • Abdur Rahim,
  • Vineet Tirth,
  • Ali Algahtani,
  • Li Zhengxin,
  • Muslim Khan,
  • Ruqia Nazir

摘要

In this work, we have developed a novel and sensitive colorimetric sensor by the constructions of hierarchical star-like structure of exfoliated NiO called as NiO-ɤ catalyst with strong peroxidase mimetic properties. The as prepared sensor predicted highest sensing response with wider and linear range of 0.001-0.900 µM, having limit of detection (LOD) and limit of quantification (LOQ) values of 0.09 ± 0.05 nM and 0.63 ± 0.05 nM. In addition, it also manifests astonishing selectivity, ample stability, better reproducibility and excellent practicality. Thus, as a result we concluded that this method is simple, robust, color stable and reliable, and hence provides an effective colorimetric bio-sensing platform for biomedical-diagnosis.

Graphical Abstract