Journal
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
Volume 62, Issue 3, Pages 364-369Publisher
SPRINGER
DOI: 10.1007/s10971-012-2735-5
Keywords
NiO; Nanomaterials; Morphology; Electrocatalysis; p-Nitrophenol
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In the work, several facile and easily controlled procedures were designed to successfully synthesize a few NiO samples with various morphologies, including nanosheets, nanobelts, nanoparticles and empty microspheres, via a hydrothermal method. The as-prepared samples were characterized by X-ray powder diffractometer, TEM and field emission scanning electron microscopy technologies. The results revealed that the as-synthesized NiO samples displayed expected nanosheets, nanobelts, nanoparticles and empty microspheres in shape. The electrocatalytic performance of each NiO sample modified on a glassy carbon electrode for -nitrophenol reduction in a basic solution using cyclic voltammetry method was investigated. The results indicated that the glassy carbon electrode modified with each NiO sample showed enhanced electrocatalytic activity by comparing a bare glassy carbon electrode, and especially NiO nanopatricles and empty microsphere exhibited the higher electrocatalytic activty for -nitrophenol reduction.
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