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<p>The present work deals with the preparation and characterization of novel g-C<sub>3</sub>N<sub>4</sub>/Fe<sub>2</sub>WO<sub>6</sub> (GCNFW) nanocomposite for the effective detection and removal of Fe(III). where thermal polymerization (g-C<sub>3</sub>N<sub>4</sub>), ball milling - solid state reaction (Fe<sub>2</sub>WO<sub>6</sub>) and ultrasonication (GCNFW nanocomposite) methods were adopted for the preparation. The structural and morphological studies of GCNFW nanocomposite ensure the presence of single-phase orthorhombic Fe<sub>2</sub>WO<sub>6</sub> decorated g-C<sub>3</sub>N<sub>4</sub> and the same was free from impurities. The selectivity of GCNFW was tested by considering 15 metal ions namely Hg(II), Ni(II), Cd(II), Co(II), Sn(IV), Al(III), Cr(III), Pb(II), Zn(II), In(III), Fe(III), Cu(II), As(III), Sr(II) and Ba(II). Interestingly the prepared GCNFW nanocomposite could behave as fluorescent sensor and electrochemical sensor. As a fluorescent sensor, GCNFW has remarkable “Turn-off” fluorescence selectivity towards Fe(III) with LOD of 26.6 nM. The Differential Pulse Voltammetry (DPV) studies confirmed the electrochemical sensing behaviour of GCNFW towards Fe(III) with LOD of 1.23 µM. The prepared GCNFW has achieved 303.30&#xa0;mg/g adsorption capacity and 87.48% removal efficiency within 15&#xa0;min. A prototype water purifier made of GCNFW with Polyurethane foam (GCNFW-PU) could have the maximum adsorption capacity of 0.098&#xa0;mg/g and removal efficiency of 99.36% towards Fe(III) in the real time drinking water samples collected from 7 different localities at Madurai District, Tamil Nadu. Hence the prepared GCNFW nanocomposite may serve as a promising fluorescent as well as electrochemical sensor material for the effective detection and removal of Fe(III) in the realm of heavy metals polluted drinking water remediation applications.</p>

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Synthesis and Characterization of a Novel Graphitic Carbon Nitride (g-C3N4)/Iron Tungstate (Fe2WO6) Nanocomposite as Fluorescent/Electrochemical Sensor for the Effective Removal of Fe(III) in the Heavy Metal Contaminated Drinking Water

  • 期刊论文

  • 发表日期：

    2026年2月2日

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  • Jeya M. Peter Paul,
  • Bhuvaneshwari Ramasamy,
  • Kannan Raman,
  • Rajashabala Sundaram

摘要

The present work deals with the preparation and characterization of novel g-C3N4/Fe2WO6 (GCNFW) nanocomposite for the effective detection and removal of Fe(III). where thermal polymerization (g-C3N4), ball milling - solid state reaction (Fe2WO6) and ultrasonication (GCNFW nanocomposite) methods were adopted for the preparation. The structural and morphological studies of GCNFW nanocomposite ensure the presence of single-phase orthorhombic Fe2WO6 decorated g-C3N4 and the same was free from impurities. The selectivity of GCNFW was tested by considering 15 metal ions namely Hg(II), Ni(II), Cd(II), Co(II), Sn(IV), Al(III), Cr(III), Pb(II), Zn(II), In(III), Fe(III), Cu(II), As(III), Sr(II) and Ba(II). Interestingly the prepared GCNFW nanocomposite could behave as fluorescent sensor and electrochemical sensor. As a fluorescent sensor, GCNFW has remarkable “Turn-off” fluorescence selectivity towards Fe(III) with LOD of 26.6 nM. The Differential Pulse Voltammetry (DPV) studies confirmed the electrochemical sensing behaviour of GCNFW towards Fe(III) with LOD of 1.23 µM. The prepared GCNFW has achieved 303.30 mg/g adsorption capacity and 87.48% removal efficiency within 15 min. A prototype water purifier made of GCNFW with Polyurethane foam (GCNFW-PU) could have the maximum adsorption capacity of 0.098 mg/g and removal efficiency of 99.36% towards Fe(III) in the real time drinking water samples collected from 7 different localities at Madurai District, Tamil Nadu. Hence the prepared GCNFW nanocomposite may serve as a promising fluorescent as well as electrochemical sensor material for the effective detection and removal of Fe(III) in the realm of heavy metals polluted drinking water remediation applications.