Aligned MoOx/MoS2 Core–Shell Nanotubular Structures with a High Density of Reactive Sites Based on Self‐Ordered Anodic Molybdenum Oxide Nanotubes. Issue 40 (7th September 2016)

• Record Type: Journal Article
• Authors: Jin, Bowen; Zhou, Xuemei; Huang, Li; Licklederer, Markus; Yang, Min; Schmuki, Patrik
• Is Part Of: Angewandte Chemie international edition. Volume 55:Issue 40(2016)
• Page Start: 12252
• Page End: 12256
• Publication Date: 2016-09-07
• Subjects: anodization -- core–shell structures -- H2 evolution -- molybdenum oxide -- nanotubes; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201605551
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: The present work demonstrates the self‐organized formation of anodic molybdenum oxide nanotube arrays. The amorphous tubes can be crystallized to MoO2 or MoO3 and be converted fully or partially into molybdenum sulfide. Vertically aligned MoO x /MoS2 nanotubes can be formed when, under optimized conditions, defined MoS2 sheets form in a layer by layer arrangement that provide a high density of reactive stacking misalignments (defects). These core–shell nanotube arrays consist of a conductive suboxide core and a functional high defect density MoS2 coating. Such structures are highly promising for applications in electrocatalysis (hydrogen evolution) or ion insertion devices. Abstract : Anodic molybdenum oxide nanotube arrays were formed. These MoO x nanotube layers can be converted into a MoO x /MoS2 nanotubular core–shell structure with bent MoS2 nanosheets consisting of stacks of typically four S‐Mo‐S layer units, which are discordantly grown on the MoO x substrate, exposing catalytically active end planes to the surrounding. These structures are highly promising for applications in electrocatalysis.