| 络合还原法制备碳载钯纳米粒子及其电催化甲酸氧化 |
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| 引用本文： | 何卫,康永印,杜翀,邹志青,张校刚,杨辉.络合还原法制备碳载钯纳米粒子及其电催化甲酸氧化[J].电化学,2009,15(4):382. |
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| 作者姓名： | 何卫 康永印 杜翀 邹志青 张校刚 杨辉 |
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| 作者单位： | 南京航空航天大学材料科学与技术学院;中国科学院上海微系统与信息技术研究所; |
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| 基金项目： | 国家科技部“863”计划(2007AA05Z141、2006AA05Z136); 国家自然科学基金(20673136、20706056); 中国科学院“百人计划”择优支持 |
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| 摘 要： | 应用柠檬酸钠络合还原法制备了粒径小、分布均匀的碳载Pd纳米粒子(Pd/C).由于柠檬酸钠的络合作用,有效地降低了Pd粒子在形成过程中的团聚.经过简单的热处理调控Pd粒子大小,发现随热处理温度的升高,Pd粒子直径由初始的2.7 nm增大到5.8 nm左右.电化学测试表明Pd/C的Pd粒子尺寸越小,电催化甲酸氧化的质量比活性越高,但如当Pd粒径较大,则催化剂呈现出更高的面积比活性.Pd粒径为3.6 nm的催化剂,其电催化甲酸氧化的稳定性最好.
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| 关 键 词： | Pd/C催化剂 柠檬酸钠 络合还原 甲酸氧化 尺寸效应 |
| 收稿时间： | 2009-11-28 |
Complex Reduction Preparation of Carbon Supported Pd Nanoparticle Catalyst and its Electrocatalysis for Formic Acid Oxidation |
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| HE Wei,KANG Yong-yin,DU Chong,ZOU Zhi-qing,ZHANG Xiao-gang,YANG Hui.Complex Reduction Preparation of Carbon Supported Pd Nanoparticle Catalyst and its Electrocatalysis for Formic Acid Oxidation[J].Electrochemistry,2009,15(4):382. |
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| Authors: | HE Wei KANG Yong-yin DU Chong ZOU Zhi-qing ZHANG Xiao-gang YANG Hui |
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| Institution: | HE Wei1,KANG Yong-yin2,DU Chong2,ZOU Zhi-qing2,ZHANG Xiao-gang1,YANG Hui2*(1.College of Materials Science , Engineering,Nanjing University of Aeronautics , Astronautics,Nanjing 210016,China,2.Energy Science , Technology Laboratory,Shanghai Institute of Microsystem , Information Technology,Chinese Academy of Sciences,Shanghai 200050,China) |
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| Abstract: | A simple procedure involved the complexing of PdCl2 with sodium citrate followed by ethylene glycol reduction has been employed for the preparation of carbon-supported Pd nanoparticles(Pd/C).The XRD and TEM characterizations indicate that Pd nanoparticles with a small particle size were well-dispersed on carbon support.The mean particle sizes of the Pd/C catalysts were found to be increased from 2.7 to 5.8 nm with heat-treatments at different temperature.The mass activity of the Pd/C catalyst for formic aci... |
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| Keywords: | Pd/C catalyst sodium citrate complex-reduction formic acid oxidation particle size effect |
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