Effects of Capping Agents on Shape, Stability, and Oxygen Evolution Reaction Activity of Copper Nanoparticles
نویسندگان
چکیده
Here, five different capping agents’ polyethylene glycol (PEG), cetyltrimethylammonium bromide (CTAB), polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), and oleylamine (OAm) are used to form copper nanoparticles (Cu-NPs), along with their electrocatalytic oxygen evolution reaction (OER) properties. The produced Cu-NPs’ mono-dispersity interactions PEG, CTAB, PVA, PVP, OAm were examined. mean particle size determined by TEM images for the uncapped Cu-NPs as generated, PVA-capped, PVP-capped, CTAB-capped, PEG-capped, OAm-capped samples, respectively, 2.71 nm, 2.22 3.10 3.31 1.49 1.71 nm. Greater than prepared catalysts, commercial Pt/C has a 3.7 nm size. It’s interesting note that CTAB-capped considerably exhibit strongest OER activity, very low overpotential of 222 mV at 10 mA cm −2 , lower many previously reported high activity RuO 2 catalysts. However, an expedited stress experiment shows NPs have greater structural stability during electrochemical cycling. Their strong tendency shape key causes this. approach creating Cu nanocatalysts described in this paper several potential uses creation bimetallic
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ژورنال
عنوان ژورنال: ECS advances
سال: 2023
ISSN: ['2754-2734']
DOI: https://doi.org/10.1149/2754-2734/acb500