Mesoporous WO₃ Nanofibers With Crystalline Framework for High-Performance Acetone Sensing.

ABSTRACT: Semiconducting metal oxides with abundant active sites are regarded as promising candidates for environmental monitoring and breath analysis because of their excellent gas sensing performance and stability. Herein, mesoporous WO₃ nanofibers with a crystalline framework and uniform pore size is successfully synthesized in an aqueous phase using an electrospinning method, with ammonium metatungstate as the tungsten sources, and SiO₂ nanoparticles and polyvinylpyrrolidone as the sacrificial templates. The obtained mesoporous WO₃ nanofibers exhibit a controllable pore size of 26.3-42.2 nm, specific surface area of 24.1-34.4 m²g^-1, and a pore volume of 0.15-0.24 cm³g^-1. This unique hierarchical structure, with uniform

SUBMITTER: Xu H 

PROVIDER: S-EPMC6482242 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature