SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2017, Vol. 25 ›› Issue (12): 1871-1876.DOI: 10.1016/j.cjche.2017.08.013

• 第25届中国过程控制会议专栏 • 上一篇    下一篇

Catalytic performance of hybrid Pt@ZnO NRs on carbon fibers for methanol electro-oxidation

Dongyan Li1, Chen Gu2, Feng Han2, Zhaoxiang Zhong2, Weihong Xing2   

  1. 1. Department of Chemical Engineering and Materials, Nanjing Polytechnic Institute, Nanjing 210048, China;
    2. State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China
  • 收稿日期:2017-07-16 修回日期:2017-08-23 出版日期:2017-12-28 发布日期:2018-01-18
  • 通讯作者: Zhaoxiang Zhong,E-mail addresses:zhongzx@njtech.edu.cn;Weihong Xing,E-mail addresses:xingwh@njtech.edu.cn.
  • 基金资助:

    Supported by the National Key R&D Program (2016YFC0204000), the National Natural Science Foundation of China (U1510202), and the Jiangsu Province Scientific Supporting Project (BK20170046; and BE2015023).

Catalytic performance of hybrid Pt@ZnO NRs on carbon fibers for methanol electro-oxidation

Dongyan Li1, Chen Gu2, Feng Han2, Zhaoxiang Zhong2, Weihong Xing2   

  1. 1. Department of Chemical Engineering and Materials, Nanjing Polytechnic Institute, Nanjing 210048, China;
    2. State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China
  • Received:2017-07-16 Revised:2017-08-23 Online:2017-12-28 Published:2018-01-18
  • Contact: Zhaoxiang Zhong,E-mail addresses:zhongzx@njtech.edu.cn;Weihong Xing,E-mail addresses:xingwh@njtech.edu.cn.
  • Supported by:

    Supported by the National Key R&D Program (2016YFC0204000), the National Natural Science Foundation of China (U1510202), and the Jiangsu Province Scientific Supporting Project (BK20170046; and BE2015023).

摘要: A novel Pt@ZnO nanorod/carbon fiber (NR/CF) with hierarchical structure was prepared by atomic layer deposition combined with hydrothermal synthesis and magnetron sputtering (MS). The morphology of Pt changes from nanoparticle to nanorod bundle with controlled thickness of Pt between 10 and 50 nm. Significantly, with the increase of voltage from 0 to 0.6 V (vs. standard calomel electrode), the prompt photocurrent generated on ZnO NR/CF increases from 0.235 to 0.725 mA. Besides, the Pt@ZnO NR/CF exhibited higher electrochemical active surface area (ECSA) value, better methanol oxidation ability and CO tolerance than Pt@CF, which demonstrated the importance of the multifunctional ZnO support. As the thickness of Pt increasing from 10 to 50 nm, the ECSA values were improved proportionally, leading to the improvement of methanol oxidation ability. More importantly, UV radiation increased the density of peak current of Pt@ZnO NR/CF towards methanol oxidation by additional 42.4%, which may be due to the synergy catalysis of UV light and electricity.

关键词: Carbon fibers, ZnO nanorods, Pt, Magnetron sputtering, Methanol electro-oxidation

Abstract: A novel Pt@ZnO nanorod/carbon fiber (NR/CF) with hierarchical structure was prepared by atomic layer deposition combined with hydrothermal synthesis and magnetron sputtering (MS). The morphology of Pt changes from nanoparticle to nanorod bundle with controlled thickness of Pt between 10 and 50 nm. Significantly, with the increase of voltage from 0 to 0.6 V (vs. standard calomel electrode), the prompt photocurrent generated on ZnO NR/CF increases from 0.235 to 0.725 mA. Besides, the Pt@ZnO NR/CF exhibited higher electrochemical active surface area (ECSA) value, better methanol oxidation ability and CO tolerance than Pt@CF, which demonstrated the importance of the multifunctional ZnO support. As the thickness of Pt increasing from 10 to 50 nm, the ECSA values were improved proportionally, leading to the improvement of methanol oxidation ability. More importantly, UV radiation increased the density of peak current of Pt@ZnO NR/CF towards methanol oxidation by additional 42.4%, which may be due to the synergy catalysis of UV light and electricity.

Key words: Carbon fibers, ZnO nanorods, Pt, Magnetron sputtering, Methanol electro-oxidation