| 碳纤维上电沉积Pd-Ag合金纳米粒子链及其氢传感性能 |
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| 引用本文： | 周保平,余刚,欧阳跃军,司薇薇,乔利杰.碳纤维上电沉积Pd-Ag合金纳米粒子链及其氢传感性能[J].物理化学学报,2010,26(1):237-243. |
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| 作者姓名： | 周保平 余刚 欧阳跃军 司薇薇 乔利杰 |
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| 作者单位： | State Key Laboratory of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China; Department of Chemistry and Chemical Engineering, Huaihua College, Huaihua 418000, Hunan Province, P. R. China; Key Laboratory of Environmental Fracture, Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083, P. R. China |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划)，湖南省教育基金 |
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| 摘 要： | 在碳纤维上采用三脉冲电沉积的方法制备出钯银合金纳米粒子链.把表面覆盖有Pd-Ag合金纳米粒子链的碳纤维组装成氢气传感器.采用扫描电子显微镜(SEM)和X射线能谱(EDX)表征了合金纳米粒子链的形貌和成分,应用CHI660B电化学工作站测试其氢传感性能.结果表明,在钯、银离子摩尔比为15∶1的电解液中,在-1.0--1.5 V下,成核5-40 ms;在-0.25--0.35 V,生长200-300 s的条件下,即可获得银的质量分数为16.0%-25.0%的钯银合金纳米粒子链阵列.在室温下,传感器对在0.30%-5.00%(φ,体积分数,下同)范围内的氢气有响应,最快响应时间约为300 s,灵敏度最高可达31.0%;氢在0.30%-1.20%的范围内响应电流与氢气浓度成线性关系,超过4.00%时响应电流不再随浓度的增加而变化;在低于3.50%的浓度下氢传感器的重现性良好.
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| 关 键 词： | 电沉积 Pd-Ag 合金 纳米粒子链 氢传感 碳纤维 |
| 收稿时间： | 2009-07-13 |
| 修稿时间： | 2009-08-24 |
Electrodeposition of Pd-Ag Alloy Nanoparticle Chains on Carbon Fibers and Their Hydrogen Sensing Properties |
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| ZHOU Bao-Ping,YU Gang,OUYANG Yue-Jun,SI Wei-Wei,QIAO Li-Jie.Electrodeposition of Pd-Ag Alloy Nanoparticle Chains on Carbon Fibers and Their Hydrogen Sensing Properties[J].Acta Physico-Chimica Sinica,2010,26(1):237-243. |
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| Authors: | ZHOU Bao-Ping YU Gang OUYANG Yue-Jun SI Wei-Wei QIAO Li-Jie |
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| Institution: | State Key Laboratory of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, P. R. China; Department of Chemistry and Chemical Engineering, Huaihua College, Huaihua 418000, Hunan Province, P. R. China; Key Laboratory of Environmental Fracture, Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083, P. R. China |
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| Abstract: | Pd-Ag alloy nanoparticle chains were fabricated on carbon fibers using three-pulse electrodeposition method.Pd-Ag alloy nanoparticle chains on carbon fiber surfaces can be used as hydrogen sensors.Scanning electron microscopy(SEM) and X-ray spectroscopy(EDX) were used to characterize the morphology and composition of the alloy nanoparticle chains.A CHI660B electrochemical workstation was used to evaluate the hydrogen sensing ability.Results show that Pd-Ag alloy nanoparticle chain arrays with a silver conte... |
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| Keywords: | Electrodeposition Pd-Ag alloy Nanoparticle chain Hydrogen sensing Carbon fiber |
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