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<p>This paper reports the preparation of cobalt silicate (Co<sub>2</sub>SiO<sub>4</sub>, CSO) first by a cost-effective and simple sonochemical route, followed by the fabrication of Co<sub>2</sub>SiO<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> (CSO/CN) nanocomposites with different mass ratios by ultrasonic-assisted co-precipitation. We have investigated the photocatalytic performance of Co<sub>2</sub>SiO<sub>4</sub>, g-C<sub>3</sub>N<sub>4</sub>, and different Co<sub>2</sub>SiO<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposites for the degradation of eriochrome black T (EB). This initial instance of CSO integrated with CN demonstrates a superior function in photocatalysis. The outcomes indicated that multiple parameters affected effectiveness, including the amount of CSO, catalyst, and EB. As a result, CSO/CN with a weight ratio of 0.1:1 is the most efficient, which means that 0.07&#xa0;g of CSO/CN (0.1:1) is capable of degrading 90.0% of 10&#xa0;ppm&#xa0;EB. Photodegradation reactions were demonstrated by the scavenger tests to be largely influenced by superoxide radicals. The kinetic investigation showed that a bigger rate constant (<i>k</i> = 0.0166&#xa0;min<sup>‒1</sup>) leads to higher efficiency (90.0%). The combination of CSO and CN as composites shows great potential for efficient photocatalytic dye degradation applications. Advanced materials for environmental treatment procedures may be developed as a result of further research and development in this field.</p>

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Dicobalt orthosilicate-graphitic carbon nitride nanocomposites as promising visible-light nanocatalysts for removal of water-soluble organic dyes

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月29日

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  • Masoud Hosseini,
  • Mojgan Ghanbari,
  • Makarim A. Mahdi,
  • Mohammed H. Almaamori,
  • Zainab Abbas Abd Alhassan,
  • Masoud Salavati-Niasari

摘要

This paper reports the preparation of cobalt silicate (Co2SiO4, CSO) first by a cost-effective and simple sonochemical route, followed by the fabrication of Co2SiO4/g-C3N4 (CSO/CN) nanocomposites with different mass ratios by ultrasonic-assisted co-precipitation. We have investigated the photocatalytic performance of Co2SiO4, g-C3N4, and different Co2SiO4/g-C3N4 nanocomposites for the degradation of eriochrome black T (EB). This initial instance of CSO integrated with CN demonstrates a superior function in photocatalysis. The outcomes indicated that multiple parameters affected effectiveness, including the amount of CSO, catalyst, and EB. As a result, CSO/CN with a weight ratio of 0.1:1 is the most efficient, which means that 0.07 g of CSO/CN (0.1:1) is capable of degrading 90.0% of 10 ppm EB. Photodegradation reactions were demonstrated by the scavenger tests to be largely influenced by superoxide radicals. The kinetic investigation showed that a bigger rate constant (k = 0.0166 min‒1) leads to higher efficiency (90.0%). The combination of CSO and CN as composites shows great potential for efficient photocatalytic dye degradation applications. Advanced materials for environmental treatment procedures may be developed as a result of further research and development in this field.