应用化学 ›› 2019, Vol. 36 ›› Issue (1): 97-106.DOI: 10.11944/j.issn.1000-0518.2019.01.180065

• 研究论文 • 上一篇    下一篇

碳纳米管负载四硝基金属酞菁-MnO2双催化剂催化氧还原性能

陈凤英a,李克智b*(),胡广志c   

  1. a商洛学院化学工程与现代材料学院,陕西省尾矿资源综合利用重点实验室 陕西 商洛 726000
    b西北工业大学凝固技术国家重点实验室,炭/炭复合材料工程技术研究中心 西安 710072
    c中国科学院新疆理化技术研究所,资源化学研究室 乌鲁木齐 830011
  • 收稿日期:2018-03-09 接受日期:2018-08-06 出版日期:2019-01-01 发布日期:2019-01-04
  • 通讯作者: 李克智
  • 基金资助:
    国家自然科学基金(51432008,21677171)和商洛学院科研基金项目(17SKY027)资助

Catalytic Oxygen Reduction Property of Carbon Nanotubes Supported Tetra-nitro-metal Phthalocyanines-MnO2 Dual Catalysts

CHEN Fengyinga,LI Kezhib*(),HU Guangzhic   

  1. aShaanxi Key Laboratory of Tailings Comprehensive Utilization of Resources,College of Chemical Engineering and Modern Materials,Shangluo University,Shangluo,Shaanxi 726000,China
    bC/C Composites Research Center,State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,China
    cKey Laboratory of Chemistry of Plant Resources in Arid Regions,State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization,Xinjiang Technical Institute of Physics and Chemistry,Chinese Academy of Science,Urumqi 830011,China
  • Received:2018-03-09 Accepted:2018-08-06 Published:2019-01-01 Online:2019-01-04
  • Contact: LI Kezhi
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.51432008, No.21677171), the Foundation of Shangluo University(No.17SKY027)

摘要:

过渡金属酞菁具有很高的氧还原催化活性, MnO2对氧还原反应有催化作用,但是将过渡金属酞菁和MnO2作为氧还原反应的双催化剂的研究较少。 本文采用苯酐-尿素法合成了碳纳米管(CNT)负载四硝基金属酞菁(TNMPc)组装体,联合γ-MnO2作为氧还原反应的双催化剂。 借助循环伏安法对双催化剂的配比进行优化,得到二者的最佳比例。 研究了四硝基金属酞菁的中心金属离子对最佳比例双催化剂催化性能的影响和双催化剂的抗甲醇性能,结果表明,双催化剂对氧还原反应的催化能力主要受到金属离子本性的影响,双催化剂对氧还原反应的催化效率顺序为CNT/TNFePc-MnO2>CNT/TNCoPc-MnO2>CNT/TNNiPc-MnO2>CNT/TNCuPc-MnO2;4种双催化剂均具有较好的抗甲醇中毒性能。

关键词: 金属酞菁, 二氧化锰, 氧还原反应, 双催化剂, 碳纳米管

Abstract:

The transition metal phthalocyanine has a high catalytic activity for oxygen reduction. MnO2 can catalyze the oxygen reduction reaction. However, the use of transition metal phthalocyanine and MnO2 as dual catalysts for oxygen reduction is quite few. Four types of carbon nanotubes supported tetra-nitro-metal phthalocyanines assemblies(CNT/TNMPc) were synthesized by phthalic anhydride-urea method. Dual catalyst CNT/TNMPc-MnO2 was prepared via adding γ-MnO2 into CNT/TNMPc. The optimal ratio of CNT/TNMPc to MnO2 was obtained by means of cyclic voltammetry. Effects of central metal ions of CNT/TNMPc on the catalytic performance for oxygen reduction reactivity were investigated. The results show that the catalytic efficiency order of the dual catalyst for oxygen reduction reactivity is CNT/TNFePc-MnO2>CNT/TNCoPc-MnO2>CNT/TNNiPc-MnO2>CNT/TNCuPc-MnO2. All of those suggest that the catalytic activity of dual catalysts for oxygen reduction reaction is mainly affected by the nature of metal ions. In addition, the anti methanol performance of dual catalyst was tested in 0.1 mol/L KOH+0.5 mol/L CH3OH electrolyte solution. The results indicate that methanol-tolerant abilities of the CNT/TNMPc-MnO2 are excellent.

Key words: metal phthalocyanine, MnO2, oxygen reduction reactivity, dual catalyst, carbon nanotubes