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<p>This study explores the synthesis of oxygen rich activated carbon (AC) material derived from a toxic and inexpensive weed <i>Parthenium hysterophorus</i>. The synthesized carbon material (AC) was used for dual applications: removal of Levofloxacin (LEV) from wastewater and as an electrode material for supercapacitor. The AC was characterized by FESEM, HRTEM, BET, XRD and FTIR techniques. Morphological investigations revealed irregular, stacked graphitic flakes and amorphous nature of AC, whereas elemental mapping verified a carbon-rich composition (78.2%) with integrated oxygen (21.8%). A pore width of 3.4&#xa0;nm and a surface area of 1.043 m<sup>2</sup>/g were identified by BET analysis consistent with type III isotherm. FTIR analysis verified the existence of different functional groups enhancing the interaction with LEV by π–π, hydrogen bonding and electrostatic interactions. The adsorption dose experiment displayed that 7&#xa0;mg dose of AC effectively remove 77% of LEV drug (0.018&#xa0;g/L). Furthermore, the specific capacitance obtained at 10&#xa0;mV/s is 1718 F/g. The excellent specific capacitance proves the high storage capacity of AC. Further in case of device, the specific capacitance for first cycle is 6.25&#xa0;Fg<sup>−1</sup>. Further, from the twoelectrode system, the device retained 80% its original efficiency. Langmuir and Freundlich models were found to be applicable by isotherm studies, indicating monolayer and multilayer adsorption mechanisms. <i>Parthenium hysterophorus</i> offers a viable path for energy storage and environmental remediation. It can also be used as a cost-effective and eco-friendly raw material for producing functionalized activated carbon.</p>

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Sustainable activated carbon derived from Parthenium hysterophorus for levofloxacin removal and supercapacitor applications

  • 期刊论文

  • 发表日期：

    2025年10月13日

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  • Vishal,
  • Sahil,
  • Ritika Sharma,
  • Ramesh Kumar,
  • Dharmender Singh Rana,
  • Neeraj Gupta,
  • Dilbag Singh

摘要

This study explores the synthesis of oxygen rich activated carbon (AC) material derived from a toxic and inexpensive weed Parthenium hysterophorus. The synthesized carbon material (AC) was used for dual applications: removal of Levofloxacin (LEV) from wastewater and as an electrode material for supercapacitor. The AC was characterized by FESEM, HRTEM, BET, XRD and FTIR techniques. Morphological investigations revealed irregular, stacked graphitic flakes and amorphous nature of AC, whereas elemental mapping verified a carbon-rich composition (78.2%) with integrated oxygen (21.8%). A pore width of 3.4 nm and a surface area of 1.043 m2/g were identified by BET analysis consistent with type III isotherm. FTIR analysis verified the existence of different functional groups enhancing the interaction with LEV by π–π, hydrogen bonding and electrostatic interactions. The adsorption dose experiment displayed that 7 mg dose of AC effectively remove 77% of LEV drug (0.018 g/L). Furthermore, the specific capacitance obtained at 10 mV/s is 1718 F/g. The excellent specific capacitance proves the high storage capacity of AC. Further in case of device, the specific capacitance for first cycle is 6.25 Fg−1. Further, from the twoelectrode system, the device retained 80% its original efficiency. Langmuir and Freundlich models were found to be applicable by isotherm studies, indicating monolayer and multilayer adsorption mechanisms. Parthenium hysterophorus offers a viable path for energy storage and environmental remediation. It can also be used as a cost-effective and eco-friendly raw material for producing functionalized activated carbon.