Process for Synthesizing Nanoparticles from at Least One Element from the Group Formed by the Group of Non-Precious Metals and Antimony, and Nanoparticles

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The invention discloses a process for synthesizing nanoparticles using at least one element from the group of non-precious metals and antimony. The method involves a dry, mechanochemical grinding step where a precursor (such as a halide of a non-precious metal or antimony) is mixed with a reducing agent (particularly an inorganic hydride like sodium borohydride) to yield nanoparticles. The process avoids the use of solvents or capping agents, is scalable, environmentally friendly, and enables good control over nanoparticle size and composition. The resulting nanoparticles have clean (ligand-free) surfaces and controlled size distributions. The patent also covers nanoparticles, including alloy nanoparticles, produced through this method.

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• Manufacture of nanoparticles for use as anode materials in sodium-ion batteries and other advanced batteries.
• Production of non-precious metal or antimony nanoparticles for catalysts, especially in chemical or energy applications.
• Fabrication of alloy nanoparticles (e.g., Sn-Sb, Bi-Sb, Co-Ni-Sn) for electronics, magnetic materials, or optical devices.
• Use in additive manufacturing, powder metallurgy, or as precursors for further chemical synthesis.
• Applications in environmental remediation by utilizing reactive metal nanoparticles.

BenefitsContent extracted from patent full text and abstract with AI.

• Solvent-free, environmentally friendly process that reduces toxic waste and simplifies disposal.
• Cost-effective production due to avoidance of expensive precious metals, solvents, and capping agents.
• Scalable process, allowing for industrial-scale synthesis of nanoparticles.
• Ability to produce nanoparticles with controlled size, composition, and morphology.
• Produces nanoparticles with ligand-free, clean surfaces, enhancing their reactivity and application potential.
• Applicable to a wide range of non-precious metals and antimony, as well as their alloys.
• Efficient and fast reaction kinetics due to mechanochemical activation.

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Inventors & Applicants

Patent Abstract

The invention relates to a process for synthesizing nanoparticles from at least one element from the group formed by the group of non-precious metals and antimony and to nanoparticles, the process comprising an infeed step wherein exclusively a precursor or a mixture of precursors and a reducing agent, especially an inorganic hydride, are provided. The process comprises a dry-grinding step wherein the precursor and the reducing agent are ground to give a powder mixture comprising the nanoparticles of non-precious metal and/or antimony or the nanoparticles and one or more additional components, especially one or more by-products and/or one or more unreacted species. The invention further relates to nanoparticles produced by the process.