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<p>Mercury contamination in water poses significant environmental and human health risks due to its toxicity and persistence. So detecting mercury ions in contaminated water is very crucial. The activated carbon was derived from the weed <i>Lantana camara</i>. The proliferation of <i>Lantana camara</i> poses a significant ecological problem. To mitigate its growth, converting it into useful products or materials is crucial. The activated carbon was doped with nitrogen and sulfur as active sites for detecting mercury(II) ions and the resulting material is abbreviated as LC-400. The presence and incorporation of nitrogen and sulfur was confirmed using XPS and FTIR analyses. The XRD pattern revealed highly amorphous nature of the prepared material. The FESEM images depicted the formation of graphitic sheets that are over layered on each other, and some graphitic flakes of carbon are aggregated on its surface, confirming the porous nature of LC-400. The material was utilized for sensing of mercury(II) ions in contaminated water, with the quenching phenomenon observed through fluorescence spectroscopy. The presence of mercury(II) ions significantly decrease the fluorescence intensity of material. The material demonstrates selective detection of mercury ions over other metal ions. The LC-400 detected mercury ions with a limit of detection of 5.17&#xa0;nM.</p>

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Nitrogen and Sulfur Co-doped Lantana Camara Derived Carbon Material for Detection of Hg2+ Ions in Contaminated Water

  • 期刊论文

  • 发表日期：

    2025年1月15日

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  • Abhishek Soni,
  • Neeraj Gupta

摘要

Mercury contamination in water poses significant environmental and human health risks due to its toxicity and persistence. So detecting mercury ions in contaminated water is very crucial. The activated carbon was derived from the weed Lantana camara. The proliferation of Lantana camara poses a significant ecological problem. To mitigate its growth, converting it into useful products or materials is crucial. The activated carbon was doped with nitrogen and sulfur as active sites for detecting mercury(II) ions and the resulting material is abbreviated as LC-400. The presence and incorporation of nitrogen and sulfur was confirmed using XPS and FTIR analyses. The XRD pattern revealed highly amorphous nature of the prepared material. The FESEM images depicted the formation of graphitic sheets that are over layered on each other, and some graphitic flakes of carbon are aggregated on its surface, confirming the porous nature of LC-400. The material was utilized for sensing of mercury(II) ions in contaminated water, with the quenching phenomenon observed through fluorescence spectroscopy. The presence of mercury(II) ions significantly decrease the fluorescence intensity of material. The material demonstrates selective detection of mercury ions over other metal ions. The LC-400 detected mercury ions with a limit of detection of 5.17 nM.