Carbon nanotubes as conducting support for potential Mn-oxide electrocatalysts: Influences of pre-treatment procedures
Carbon nanotubes as conducting support for potential Mn-oxide electrocatalysts: Influences of pre-treatment procedures作者机构:Max Planck Institute for Chemical Energy Conversion Stiftstraβe 34-36 45470 Mulheim an der Ruhr Germany Fritz Haber Institute of the Max Planck Society Famdayweg 4-6 14195 Berlin Germany
出 版 物:《Journal of Energy Chemistry》 (能源化学(英文版))
年 卷 期:2016年第25卷第2期
页 面:263-269页
核心收录:
学科分类:081704[工学-应用化学] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程(可授工学、理学学位)] 0703[理学-化学] 070301[理学-无机化学] 0702[理学-物理学]
主 题:Multi walled carbon nanotubes(MWCNT) Surface modification Raman spectroscopy Manganese deposition Zeta potential
摘 要:Different oxygen and nitrogen containing functional groups were created on the surface of the multiwalled carbon nanotubes. The multi-walled carbon nanotubes were treated in ultrasonic bath with sulfuric or nitric acid. Furthermore the surface texture was modified by increase of the roughness. In particular after treatment with the oxidizing nitric acid, in comparison to the H2SO4 or ultra-sonic treated samples,craters and edges are dominating the surface structures. Manganese oxide was deposited on the multiwalled carbon nanotubes by precipitation mechanism. Various manganese oxides are formed during the deposition process. The samples were characterized by elemental analysis, microscopy, thermal analysis,Raman spectroscopy, and by the zeta potential as well as X-ray diffraction measurements. It was shown that the deposited manganese oxides are stabilized rather by surface texture of the multi-walled carbon nanotubes than by created functional groups.