Publications by authors named "Kumaresan Annamalai"

To address the escalating demand for electrical energy, developing high-performance electrochemical energy storage materials is crucial. Metal oxides represent promising materials for high-energy-density supercapacitors. Among these materials, transition metal-based tungstates exhibit significantly enhanced electrical conductivity compared to pure oxides.

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A comparative approach is employed for the novel synthesis of a magnetically recoverable ternary nanocomposite consisting of g-CN-supported FeO decorated with coinage metals (Au, Ag, and Cu). This synthesis is achieved through a straightforward and convenient one-step grinding protocol. In situ, the nanoparticles were grown on the g-CN-assist FeO matrix (GCFM), and the agglomeration of these nanoparticles on the matrix creates a pathway for the formation of the nanocomposite (NC).

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An innovative means of synthesizing mechanically recoverable ternary nanocomposite (NC) comprising FeO supported on husk (OSH) and ornamented with 3d tetra-metals (M = Mn, Co, Ni, Cu) is proposed using a manual grinding method. This NC was prepared a one-step manual method. The added advantage of this method is the non-usage of solvents during the synthesis of the NC.

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Article Synopsis
  • Electronic waste, particularly waste dry-cell batteries, poses a significant environmental threat, but innovative approaches are being explored to convert this waste into valuable products like photoluminescent carbon dots (CDs) using a one-step hydrothermal treatment.
  • The synthesized CDs exhibit strong photoluminescent properties, a quantum yield of around 13%, and are effective in detecting harmful contaminants like chromium and cobalt ions at low detection limits of approximately 0.11 µM and 0.10 µM, respectively.
  • This research highlights the use of recycled materials for environmental applications, demonstrating that these CDs can degrade pollutants like Bromothymol Blue dye with an efficiency of 84% under sunlight, offering a promising solution for pollution
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