Construction of Cd-Co9S8@S-gc3n4 Heterojunction Porous Composites for the Efficient Removal of Dye Pollution in Water
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Date
2024
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UMT, Lhr
Abstract
Cadmium doped Cobalt Sulphide composite with Sulphur doped graphitic carbon nitride was prepared with band gap tuning at 2.0 eV which falls in the visible region of solar spectrum. The prepared photocatalyst successfully degraded the model dye (methylene blue) to 83% within 75 mins. The prepared catalyst was characterized using SEM, which revealed the distribution of nanosized particles with some agglomeration. The powder X-ray crystallographic data showed the crystallinity in the material as it is evident from the peaks 2θ values. The FTIR proved the successful preparation of metal sulphide bond at 670 cm-1. The outcomes of the analyses unequivocally demonstrated the successful fabrication of the heterojunction photocatalyst, which exhibited superior performance compared to the unmodified cobalt sulphide particles when subjected under visible light. This elevation in photocatalytic efficacy can be predominantly due to the proficient management of charge transfer dynamics, which is facilitated by the harmonization of energy levels at the interfacial region of the heterojunction. Moreover, the synergistic impact has played a pivotal role in amplifying the degradation efficacy targeting methylene blue, a widely utilized model organic dye. These empirical findings significantly underscore the intrinsic potential underpinning the devised approach for the effective decomposition of organic dyes for example methylene blue, within the realm of wastewater treatment applications, particularly in mitigating the challenges arising from water contamination linked to the textile industry.