<p>This study introduced an enhanced method for the displacement reduction of selenium and tellurium from the leachate of copper anode slime utilizing nanoscale copper powder. The nanosized copper powder was synthesized through a facile method and characterized by its high surface energy and exceptional chemical reactivity. A series of displacement experiments was conducted to optimize the reaction parameters, achieving maximum recovery rates of 99.90% and 99.88% for selenium and tellurium, respectively, in 1 M H₂SO₄ medium after a 2-h reaction period. The results were substantiated through comprehensive analyses, including X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), X-ray photoelectron spectroscopy (XPS), and infrared particle size distribution analysis, all of which confirmed the successful displacement and reduction of selenium and tellurium. This method offers a cost-effective and efficient strategy for the recovery of these valuable rare metals.</p>