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<p>The environmental burden caused by pharmaceutical pollutants and invasive biomass necessitates the development of affordable, sustainable sensor materials. Herein, a one-pot, sustainable synthesis route was employed to develop a nitrogen-doped activated carbon/lanthanum chromite (NCLCr) nanocomposite, utilizing invasive Lantana camara leaves as an eco-friendly carbon source. Combustion, sol–gel techniques, and facile mechanical milling enabled the integration of N-doped activated carbon (N@AC) with perovskite lanthanum Chromite (LaCrO₃), yielding a heterostructure nanocomposite with tailored physicochemical properties. Electrochemical investigations revealed that the NCLCr-modified electrode exhibited superior redox activity and enhanced electrical conductivity compared to its constituent materials. When leveraged as a sensing platform, the NCLCr nanocomposite modified glassy carbon electrode (GCE) (NCLCr/GCE) exhibited a significantly higher current response: 21.8 µA for dopamine (DA) and 6.73 µA for Chlorzoxazone (CZ) demonstrated exceptional sensitivity and selectivity for the detection of DA and CZ, achieving low detection limits (LOD) of 0.18&#xa0;µM, with limits of quantification 0.68&#xa0;µM for DA and LOD 2.8&#xa0;µM and LOQ 9.2&#xa0;µM for CZ, respectively. These results showcase the potential of synthesized nanocomposites as a sensor, driven by a green, scalable route that enables low-cost, sustainable nanocomposites for pharmaceuticals and environmental applications.</p>

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Lantana camara leaf-based N-doped carbon@LaCrO3 nanocomposite for electrochemical dopamine and chlorzoxazone sensing

  • 期刊论文

  • 发表日期：

    2026年6月24日

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  • Sonapatel,
  • Udayabhanu,
  • Jyothi C. Abbar,
  • S. Akhila,
  • G. Nagaraju,
  • K. Prashantha,
  • K. N. Nandeesh

摘要

The environmental burden caused by pharmaceutical pollutants and invasive biomass necessitates the development of affordable, sustainable sensor materials. Herein, a one-pot, sustainable synthesis route was employed to develop a nitrogen-doped activated carbon/lanthanum chromite (NCLCr) nanocomposite, utilizing invasive Lantana camara leaves as an eco-friendly carbon source. Combustion, sol–gel techniques, and facile mechanical milling enabled the integration of N-doped activated carbon (N@AC) with perovskite lanthanum Chromite (LaCrO₃), yielding a heterostructure nanocomposite with tailored physicochemical properties. Electrochemical investigations revealed that the NCLCr-modified electrode exhibited superior redox activity and enhanced electrical conductivity compared to its constituent materials. When leveraged as a sensing platform, the NCLCr nanocomposite modified glassy carbon electrode (GCE) (NCLCr/GCE) exhibited a significantly higher current response: 21.8 µA for dopamine (DA) and 6.73 µA for Chlorzoxazone (CZ) demonstrated exceptional sensitivity and selectivity for the detection of DA and CZ, achieving low detection limits (LOD) of 0.18 µM, with limits of quantification 0.68 µM for DA and LOD 2.8 µM and LOQ 9.2 µM for CZ, respectively. These results showcase the potential of synthesized nanocomposites as a sensor, driven by a green, scalable route that enables low-cost, sustainable nanocomposites for pharmaceuticals and environmental applications.