RuAg/TiO2-C催化剂的制备及对甲醇的电催化氧化性能
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

TM911.4; O643.36

基金项目:

教育部留学回国人员科研启动基金;南通市科技局项目


C-doped porous TiO2 supported RuAg catalyst for methanol electro-oxidation
Author:
Affiliation:

Fund Project:

Research Foundation of the talents for six pillar industries of Jiangsu Province, Qianlan Program,Program of Science and Technology Department of Nantong

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    采用改性溶胶凝胶法和水热合成法制备了掺C多孔纳米TiO2,并以其为载体制备了一种RuAg/TiO2-C甲醇催化剂。采用X射线衍射(XRD)、透射电镜(TEM)、X射线能谱(EDS)和X射线光电子能谱(XPS)等对催化剂进行了表征,测定了其对甲醇的电催化氧化性能。实验结果表明,RuAg的负载和C的掺杂能提高TiO2对甲醇的电催化性能,RuAg/TiO2-C对甲醇电催化的循环伏安曲线中未见甲醇氧化中间产物的氧化峰,0.544 V处有一个较大的甲醇氧化峰,其峰电流密度5.8 mA/cm2,RuAg/TiO2-C比商用PtRu/C催化剂具有更高的催化活性和抗毒性,RuAg合金的负载以及RuAg合金与掺C多孔纳米TiO2载体之间较强的相互作用是其对甲醇催化性能提高的主要因素。

    Abstract:

    C-doped porous spherical TiO2 was prepared by modified sol-gel method and hydrothermal method. Then, it was used as support to fabricate RuAg/TiO2-C catalyst for methanol oxidation. The structural and electrochemical properties of the RuAg/TiO2-C catalyst were characterized by XRD, TEM, EDS, XPS and electrochemical analysis. The experiment results showed that the deposition of RuAg and doping of C could improve the electrocatalytic activity of the RuAg/TiO2-C catalyst for methanol oxidation. The cyclic voltammograms of the RuAg/TiO2-C catalyst showed that there was a larger methanol oxidation peak current at 0.544 V with a peak current density of 5.8 mA/cm2. No oxidation peak of intermediates can be seen on the reverse scan in the cyclic voltammograms. The RuAg/TiO2-C catalyst showed higher catalytic activity and better anti-poisoning ability for methanol oxidation than the commercial PtRu/C catalyst. The enhancement was owing to the strong interaction between RuAg nano alloy and TiO2-C support.

    参考文献
    相似文献
    引证文献
引用本文

鞠剑峰,吴东辉. RuAg/TiO2-C催化剂的制备及对甲醇的电催化氧化性能[J].精细化工,2021,38(3):0

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2020-07-30
  • 最后修改日期:2020-10-18
  • 录用日期:2020-10-19
  • 在线发布日期: 2021-01-05
  • 出版日期: