Enhanced chemiluminescence of the luminol-hydrogen peroxide system by colloidal cupric oxide nanoparticles as peroxidase mimic
Enhanced chemiluminescence of the luminol-hydrogen peroxide system by colloidal cupric oxide nanoparticles as peroxidase mimic
复制标题
胶体氧化铜纳米粒子作为过氧化物酶模拟物增强鲁米诺-过氧化氢系统的化学发光
DOI：
10.1016/j.talanta.2012.06.061
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发表时间：
2012-09-15
期刊：
影响因子：
6.1
通讯作者：
Xia, Xing-Hua
中科院分区：
文献类型：
--
作者：
Chen, Wei;Hong, Lei;Xia, Xing-Hua
作为过氧化物酶模拟物，氧化铜纳米粒子对鲁米诺-过氧化氢体系的化学发光有400倍的增强作用。通过化学发光光谱和自由基清除剂的研究，探讨了可能的化学发光增强机理。结果表明，CuO纳米粒子具有类似过氧化物酶的活性，能有效地催化过氧化氢分解为羟基自由基，从而提高了发光强度。研究了反应物浓度和有机物对反应的影响。该方法可作为过氧化氢和葡萄糖的灵敏检测工具。(C)2012 Elsevier B. V.保留所有权利。
As a peroxidase mimic, cupric oxide nanoparticles were found to enhance the chemiluminescence (CL) of luminol-H2O2 system up to 400 folds. The CL spectra and radical scavengers were conducted to investigate the possible CL enhancement mechanism. It was suggested that the enhanced CL could be attributed to the peroxidase-like activity of CuO nanoparticles, which effectively catalyzed the decomposition of hydrogen peroxide into hydroxyl radicals. The effects of the reactant concentrations and some organic compounds were also investigated. The proposed method could be used as a sensitive detection tool for hydrogen peroxide and glucose. (C) 2012 Elsevier B.V. All rights reserved.