过氧化氢
安培法
煅烧
铜
化学
无机化学
大气(单位)
氧化铜
氮气
氧化物
电化学
电极
催化作用
有机化学
物理化学
物理
热力学
作者
Peng Gao,Yuxuan Gong,Nathan P. Mellott,Dawei Liu
标识
DOI:10.1016/j.electacta.2015.05.037
摘要
Abstract In this research, grass-like CuO nanostructure was synthesized via a simple hydrothermal reaction at 100 °C for 6 h without using any surfactant. The as-prepared sample was further calcined at 500 °C for 1 h in nitrogen atmosphere for comparison. The surface morphology, crystal structure and chemical composition of the products were investigated by scanning electron microscopy (SEM), powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and room temperature photoluminescence spectroscopy (PL). The as-synthesized samples were also characterized systematically by electrochemical methods including cyclic voltammetry (CV), amperometric detection (i-t) and electrochemical impedance spectroscopy (EIS). It was found that the sample prepared after calcination in a nitrogen atmosphere exhibited better electrochemical catalytic performance for the determination of H 2 O 2 . In addition, high sensitivity (119.35 μA/mM) and fast amperometric response ( 2 O heterostructure, thus making it one of the promising candidates for the efficient and sensitive non-enzymatic amperometric detection of H 2 O 2 .
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