Nanobelt-assembled nest-like MoO3 hierarchical structure: Hydrothermal synthesis and gas-sensing properties

• Published in: Materials letters 2015-12, Vol.160, p.476-479
• Main Authors: Li, Tianming, Zeng, Wen, Zhang, Yangyang, Hussain, Shahid
• Format: Article
• Language: English
• Subjects: Channels; Chemical reactions; Ethanol; Ethyl alcohol; Gas sensor; Gas sensors; Hydrothermal; MoO3; Nanostructure; Nest-like; Reaction rooms; Stacking; Synthesis
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2015.08.031

We report the synthesis of novel nest-like MoO3 hierarchical structures with nanobelts as building blocks via a facile hydrothermal process. A comparison study reveals that an enhanced gas sensing performance for the sensor made of nanobelt-assembled nest-like MoO3 towards ethanol occurs over that of the monodispersed MoO3 nanobelts. The improved gas sensing properties are mainly attributed to the well-aligned nanoporous structures with a less stacking configuration, which provides sufficient nano or micro reaction rooms for chemical reaction as well as effective diffusion channels for gases. In this letter, we report a surfactant assisted hydrothermal synthesis of nanobelt-assembled nest-like α-MoO3 hierarchical architectures and report their advantages and gas sensing properties. [Display omitted] •Novel nest-like α-MoO3 hierarchical architectures have been successfully prepared.•Nest-like α-MoO3Nest-like α-MoO3 exhibit superior gas-sensing performance over that of monodispersed ones.•Nest-like α-MoO3 architectures could provide vast reaction sites and sufficient diffusion spaces.