Ru@Pt/CNTs纳米粒子的制备及催化乙醇氧化电化学活性的研究

人工晶体学报 ›› 2021, Vol. 50 ›› Issue (8): 1496-1502.

Ru@Pt/CNTs纳米粒子的制备及催化乙醇氧化电化学活性的研究

张玉杰¹, 肖凤艳¹, 赵斌²

1.烟台职业学院机械工程系,烟台 264670;
2.中国兵器工业集团第五二研究所,烟台 264003

收稿日期:2021-05-31 出版日期:2021-08-15 发布日期:2021-09-14
作者简介:张玉杰(1969—),女,山东省人,副教授。E-mail:zyjyt_70@163.com
基金资助:
山东省高等学校青创科技支持计划(2019KJB001);烟台市重点研发计划(2018XSCC036)

Electrochemical Activity of Catalytic Ethanol Oxidation Properties Based on Ru@Pt/CNTs Nanoparticles

ZHANG Yujie¹, XIAO Fengyan¹, ZHAO Bin²

1. Department of Mechanical Engineering, Yantai Vocational College, Yantai 264670, China;
2. The 52nd Research Institute of China North Industries Group, Yantai 264003, China

Received:2021-05-31 Online:2021-08-15 Published:2021-09-14

摘要/Abstract

摘要： 通过乙醇还原方法制备了不同比例的碳纳米管负载钌铂核壳结构的纳米粒子(Ru@Pt/CNTs),并用作直接乙醇燃料电池的阳极催化剂。利用透射电镜(TEM)、X射线衍射(XRD)和X射线光电子能谱(XPS)等手段表征该催化剂的结构。结果表明Ru@Pt/CNTs纳米颗粒具有核壳结构(以钌为核),Ru@Pt/CNTs在乙醇电氧化反应(EOR)中表现出优良的电化学催化活性,其中,当铂∶钌摩尔比为0.75时,催化性能达到最优,电流密度值达到1 767.77 mA/mg Pt,是商业Pt/C的3.25倍。另外,耐久性的实验发现当铂∶钌摩尔比为1.00时, CV测试循环了250圈后衰减了19.7%。因此,具有核壳结构的Ru@Pt/CNTs纳米粒子对乙醇氧化反应有优良的催化活性。

关键词: 铂, 钌, 合金催化剂, CNT, 乙醇氧化反应

Abstract: Carbon nanotubes loaded by different ratios of core-shell structured ruthenium platinum nanoparticles (Ru@Pt/CNTs) were prepared by ethanol reduction methods and used as anodic catalysts for direct ethanol fuel cells. The structures of the as synthesized catalysts were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The results show that Ru@Pt/CNTs nanoparticles formed a core-shell structure (the core was ruthenium and the shell was platinum). Meanwhile, the electrochemical measurements demonstrates Ru@Pt/CNTs exhibits ultrahigh electrochemical catalytic activity(Ru@Pt_0.75/CNTs,1 767.77 mA/mg Pt) and durability(Ru@Pt_1.0 CNTs, CV decay of 19.7% after 250 test cycles) in ethanol electro-oxidation reaction(EOR) compared with commercial Pt/C catalysts. Therefore, the Ru@Pt/CNTs nanoparticles with core-shell structure have an excellent catalytic activity for ethanol oxidation.

Key words: platinum, ruthenium, alloy catalyst, CNT, ethanol oxidation reaction

中图分类号:

O734

张玉杰, 肖凤艳, 赵斌. Ru@Pt/CNTs纳米粒子的制备及催化乙醇氧化电化学活性的研究[J]. 人工晶体学报, 2021, 50(8): 1496-1502.

ZHANG Yujie, XIAO Fengyan, ZHAO Bin. Electrochemical Activity of Catalytic Ethanol Oxidation Properties Based on Ru@Pt/CNTs Nanoparticles[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2021, 50(8): 1496-1502.

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