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<p>In this study, we report the development of the most economical synthesis route for magnetically separable graphitic carbon nitride with iron oxide (g–C<sub>3</sub>N<sub>4</sub>–Fe<sub>2</sub>O<sub>3</sub>) photocatalyst using an iron-rich natural laterite soil sample as a readily available and cost-effective iron precursor. A simple chemical acid extraction method used to synthesize Fe<sub>2</sub>O<sub>3</sub> from a laterite soil sample as an iron precursor naturally found in Ratnagiri, Maharashtra, India. Additionally, to enhance the photocatalytic activity of the pure Fe<sub>2</sub>O<sub>3</sub>, we have incorporated it with the g–C<sub>3</sub>N<sub>4</sub>, and the resultant material shows superior performance. The structural and optical properties of the resulting Fe<sub>2</sub>O<sub>3</sub>, g–C<sub>3</sub>N<sub>4</sub>, and g–C<sub>3</sub>N<sub>4</sub>–Fe<sub>2</sub>O<sub>3</sub> nanocomposite were thoroughly characterized using physio-chemical methods. The characterization results successfully established heterojunction between g–C<sub>3</sub>N<sub>4</sub> and Fe<sub>2</sub>O<sub>3</sub>, improving the photogenerated electron–hole pair lifetime. The g–C<sub>3</sub>N<sub>4</sub>–Fe<sub>2</sub>O<sub>3</sub> nanocomposite demonstrated enhanced photocatalytic activity for the degradation of methyl orange (97.66%) and textile effluent (97.00%) under natural sunlight with excellent photocatalytic stability after five consecutive cycles. These results highlight a new way of large-scale synthesis of iron-based nanocomposite photocatalyst using laterite soil as an inexpensive iron precursor.</p>

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Efficient chemical synthesis of g–C3N4–Fe2O3 nanocomposites as a photocatalyst for superior photocatalytic degradation

  • 期刊论文

  • 发表日期：

    2025年1月28日

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  • Babasaheb T. Shinde,
  • Santosh B. Babar,
  • Umesh V. Shembade,
  • Annasaheb V. Moholkar,
  • Hemant V. Chavan

摘要

In this study, we report the development of the most economical synthesis route for magnetically separable graphitic carbon nitride with iron oxide (g–C3N4–Fe2O3) photocatalyst using an iron-rich natural laterite soil sample as a readily available and cost-effective iron precursor. A simple chemical acid extraction method used to synthesize Fe2O3 from a laterite soil sample as an iron precursor naturally found in Ratnagiri, Maharashtra, India. Additionally, to enhance the photocatalytic activity of the pure Fe2O3, we have incorporated it with the g–C3N4, and the resultant material shows superior performance. The structural and optical properties of the resulting Fe2O3, g–C3N4, and g–C3N4–Fe2O3 nanocomposite were thoroughly characterized using physio-chemical methods. The characterization results successfully established heterojunction between g–C3N4 and Fe2O3, improving the photogenerated electron–hole pair lifetime. The g–C3N4–Fe2O3 nanocomposite demonstrated enhanced photocatalytic activity for the degradation of methyl orange (97.66%) and textile effluent (97.00%) under natural sunlight with excellent photocatalytic stability after five consecutive cycles. These results highlight a new way of large-scale synthesis of iron-based nanocomposite photocatalyst using laterite soil as an inexpensive iron precursor.