| Electrodeposition of Silver Nanoparticles on MWCNT Film Electrodes for Hydrogen Peroxide Sensing |
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| 作者姓名： | 丁言峰 晋冠平 殷俊光 |
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| 作者单位： | Department of Application Chemistry, School of Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, China |
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| 基金项目： | Project supported by the Natural Science Foundation of Anhui Province of China （No. 070415210）, the Science and Technology Program Foundation of Hefei City （No. 20071032）, and the Doctor Foundation of Hefei University of Technology （2005）. |
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| 摘 要： | Silver （Ag） nanoparticles were directly electrodeposited on multi-walled carbon nanotubes （MWCNT） in AgNO3/LiNO3 containing EDTA （ethylenediaminetetraacetic acid）. The structure and nature of the resulting Ag/MWNT composite were characterized by field emission scanning electron microscopy （FE-SEM）, transmission electron microscopy （TEM） and X-ray diffraction （XRD）, and the distribution shape of Ag nanoparticles was found to be dependent on the presence of EDTA. The modified electrode showed excellent electrocatalytic activity to redox reaction of hydrogen peroxide and the mechanism of hydrogen peroxide was partly reversible procession with oxidation and reduction peaks at 0.77 and -0.83 V, respectively. The oxidation and reduction peak currents were linearly related to hydrogen peroxide concentration in the range of 1×10^-6-3×10^-4 and 1 ×10^-8-7× 10^-4 mol·L^-1 with correlation coefficients of 0.996 and 0.986, and 3s-detection limit of 9 × 10^-7 and 7 × 10^-9 mol·L^-1.
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| 关 键 词： | 碳纳米棒 银纳米粒子 电解沉积 氢过氧化 |
| 修稿时间： | 2006-09-062007-03-21 |
Electrodeposition of Silver Nanoparticles on MWCNT Film Electrodes for Hydrogen Peroxide Sensing |
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| DING Yan-Feng,JIN Guan-Ping, YIN Jun-Guang.Electrodeposition of Silver Nanoparticles on MWCNT Film Electrodes for Hydrogen Peroxide Sensing[J].Chinese Journal of Chemistry,2007,25(8):1094-1098. |
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| Authors: | DING Yan-Feng JIN Guan-Ping YIN Jun-Guang |
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| Institution: | Department of Application Chemistry, School of Chemical Engineering, Hefei University of Technology, Hefei, Anhui 230009, China |
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| Abstract: | Silver (Ag) nanoparticles were directly electrodeposited on multi‐walled carbon nanotubes (MWCNT) in AgNO3/LiNO3 containing EDTA (ethylenediaminetetraacetic acid). The structure and nature of the resulting Ag/MWNT composite were characterized by field emission scanning electron microscopy (FE‐SEM), transmission electron microscopy (TEM) and X‐ray diffraction (XRD), and the distribution shape of Ag nanoparticles was found to be dependent on the presence of EDTA. The modified electrode showed excellent electrocatalytic activity to redox reaction of hydrogen peroxide and the mechanism of hydrogen peroxide was partly reversible procession with oxidation and reduction peaks at 0.77 and ?0.83 V, respectively. The oxidation and reduction peak currents were linearly related to hydrogen peroxide concentration in the range of 1×10?6–3×10?4 and 1×10?8–7×10?4 mol·L?1 with correlation coefficients of 0.996 and 0.986, and 3s‐detection limit of 9×10?7 and 7×10?9 mol·L?1. |
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| Keywords: | multi-wall carbon nanotube silver nanoparticle electrodeposition hydrogen peroxide |
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