交替微波加热法对制备氧还原催化剂性能的影响

doi:10.3866/PKU.WHXB201111153

物理化学学报 >> 2012, Vol. 28 >> Issue (01): 85-89.doi: 10.3866/PKU.WHXB201111153

交替微波加热法对制备氧还原催化剂性能的影响

尹诗斌^1,2, 罗林^1,2, 荆胜羽³, 朱强强², 强颖怀²

1. 中国矿业大学低碳能源研究院, 江苏徐州 221116;
2. 中国矿业大学材料科学与工程学院, 江苏徐州 221116;
3. 中国矿业大学信息与电气工程学院, 江苏徐州 221116

收稿日期:2011-10-09 修回日期:2011-11-10 发布日期:2011-12-29
通讯作者: 尹诗斌, 强颖怀 E-mail:shibinyin@126.com; yhqiang@cumt.edu.cn
基金资助:
国家自然科学基金(21106178), 中国博士后基金(20110491480), 徐州市科技项目(XJ11B009), 徐州市多晶硅与光伏能源技术专项(6AT102092),材料复合新技术国家重点实验室(武汉理工大学)开放基金(2012-KF-13)和中国矿业大学青年基金(2011QNA21, 2009A026)资助

Effect of Intermittent Microwave Heating on the Performance of Catalysts for Oxygen Reduction Reaction

YIN Shi-Bin^1,2, LUO Lin^1,2, JING Sheng-Yu³, ZHU Qiang-Qiang², QIANG Ying-Huai²

1. Low Carbon Energy Institute, China University of Mining and Technology, Xuzhou 221116, Jiangsu Province, P. R. China;
2. School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu Province, P. R. China;
3. School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu Province, P. R. China

Received:2011-10-09 Revised:2011-11-10 Published:2011-12-29
Contact: YIN Shi-Bin, QIANG Ying-Huai E-mail:shibinyin@126.com; yhqiang@cumt.edu.cn
Supported by:
The project was supported by the National Natural Science Foundation of China (21106178), Postdoctoral Science Foundation of China (20110491480), Scientific Research Foundation of Xuzhou, China (XJ11B009), Polysilicon and Photovoltaic Energy Technology of Xuzhou, China (6AT102092), Open Fund of the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology) (2012-KF-13), and Scientific Research Foundation for Yong Teachers of the China University of Mining and Technology, China (2011QNA21, 2009A026).

摘要/Abstract

摘要： 详细研究了交替微波加热法制备多壁碳纳米管负载Pt 催化剂(Pt/MWCNTs)的过程中交替微波加热(5s-on/5s-off)次数对催化剂性能的影响. X射线粉末衍射(XRD)结果表明, Pt 的晶粒尺寸在开始的加热阶段基本上没有发生变化，但是随着加热次数的增多, Pt 的晶粒尺寸逐步增大. 采用循环伏安法和旋转圆盘电极技术考察了催化剂的电化学活性. 结果显示, 以5s-on/5s-off 加热20 次时, 催化剂显示出最佳的催化活性; 在0.5mol·L^-1 H₂SO₄饱和氧水溶液中催化剂的氧还原起峰电位接近1.0 V (vs RHE). 交替微波加热法简单经济, 在大批量制备催化剂等纳米材料方面显示出较好的应用前景.

关键词: 催化剂, 交替微波加热法, 旋转圆盘电极, 氧还原反应, 多壁碳纳米管

Abstract: The influence of intermittent microwave heating (IMH) on the physicochemical and electrochemical properties of platinum loaded on multi-walled carbon nanotubes (Pt/MWCNTs) was investigated. X-ray diffraction results revealed that the crystal size of Pt particles hardly increased for smaller numbers of pulse repetitions, but became much larger as the number of pulse repetitions increased. Cyclic voltammetry (CV) and rotating disk electrode (RDE) results showed that the Pt/MWCNTs catalysts prepared by IMH in a repeated pulse form of 5s-on/5s-off for 20 pulse repetitions possessed the largest electrochemical surface area. An onset potential of approximately 1.0 V (vs RHE) was observed for the oxygen reduction reaction in oxygen-saturated 0.5 mol·L^-1 H₂SO₄ aqueous solutions. The IMH method is simple, economical, and can potentially be scaled up for the mass production of nanomaterials.

Key words: Catalyst, Intermittent microwave heating method, Rotating disk electrode, Oxygen reduction reaction, Multi-walled carbon nanotube

尹诗斌, 罗林, 荆胜羽, 朱强强, 强颖怀. 交替微波加热法对制备氧还原催化剂性能的影响[J]. 物理化学学报, 2012, 28(01), 85-89. doi: 10.3866/PKU.WHXB201111153

YIN Shi-Bin, LUO Lin, JING Sheng-Yu, ZHU Qiang-Qiang, QIANG Ying-Huai. Effect of Intermittent Microwave Heating on the Performance of Catalysts for Oxygen Reduction Reaction[J]. Acta Phys. -Chim. Sin. 2012, 28(01), 85-89. doi: 10.3866/PKU.WHXB201111153

链接本文: https://www.whxb.pku.edu.cn/CN/10.3866/PKU.WHXB201111153

https://www.whxb.pku.edu.cn/CN/Y2012/V28/I01/85

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交替微波加热法对制备氧还原催化剂性能的影响

Effect of Intermittent Microwave Heating on the Performance of Catalysts for Oxygen Reduction Reaction

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