Facile synthesis of PPy@MoS2 hollow microtubes for removal of cationic and anionic dyes in water treatment

Abstract

Hierarchical [email protected]2 microtubes were obtained using easy operation steps of a hydrothermal process, in-situ polymerization method and sulfidation course. These were regarded as a good adsorption material to adsorb methylene blue (MB) and congo red (CR) dyes in aqueous solution. The synthetic composite displayed huge specific surface areas and excellent adsorption performance for MB (127.0 mg·g−1) and CR (598.7 mg·g−1) because of the 1D hierarchical hollow structure and the synergistic effect between the MoS2 nanoflakes and PPy coating. Adsorption performance of [email protected]2 fits well with the pseudo-second-order kinetic pattern for both MB and CR and conforms to Langmuir model for MB and Freundlich model for CR. Moreover, their excellent adsorption performance makes the [email protected]2 composites ideal for the adsorption of organic dyes.