Synthesis of Nanoscale Heterostructures Comprised of Metal Nanowires, Carbon Nanotubes, and Metal Nanoparticles: Investigation of Their Structure and Electrochemical Properties

W1965445472 · 수집 2026-10-04 18:12:18

T10074 Carbon Nanotubes in Composites

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One‐dimensional nanoscale heterostructures comprised of multisegment gold‐nickel nanowires, carbon nanotube, and nickel nanoparticles were fabricated in a unique approach combining top‐down and bottom‐up assembly methods. Porous alumina template was utilized for sequential electrodeposition of gold and nickel nanowire segments. This was followed by chemical vapor deposition growth of carbon nanotubes on multisegment gold‐nickel nanowires, where nickel segment also acted as a carbon nanotube growth catalyst. The aligned arrays of these gold‐nickel‐carbon nanotube heterostructures were released from porous alumina template and then subjected to wet‐chemical process to be decorated with nickel/nickel oxide core/shell nanoparticles. X‐ray diffraction, scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy were utilized for morphology, interface, defect, and structure characterization. The electrochemical performance of these heterostructures was studied using cyclic voltammetry method and the specific capacitance of various heterostructures was estimated and compared.

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