Synthesis of nanosized LDHs by Au colloidal nanoparticles as nuclei and its application for electroanalysis
Source abstract
Abstract
Abstract Nanosized Ni–Al LDHs were synthesized via a hydrothermal method by using Au colloidal nanoparticles as nuclei for LDH growth, designated as Au/Ni–Al LDHs. Transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy were used to characterize the structure and morphology. N 2 physisorption was performed to measure the specific surface area. Electrochemical impedance spectroscopy and cyclic voltammetry were introduced to investigate the electrochemical properties of Au/Ni–Al LDHs. The average size of Au/Ni–Al LDHs was small as 10 ± 0.2 nm, and the high BET surface area was obtained. The conductivity was improved as Au/Ni–Al LDHs modified glassy carbon electrode (GCE), compared to Ni–Al LDHs modified GCE. Ascorbic acid was used as a model molecule to study the electroanalytical properties of Au/Ni–Al LDHs modified GCE. The results exhibited that high sensitive detection was obtained.
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Research context
OpenAlex topics: Layered Double Hydroxides Synthesis and Applications · Supercapacitor Materials and Fabrication · Advanced battery technologies research
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