Electrospun sillenite Bi12MO20 (M = Ti, Ge, Si) nanofibers: general synthesis, band structure, and photocatalytic activity

Abstract

Sillenite Bi12MO20 (M = Ti, Ge, Si) nanofibers have been fabricated through a facile electrospinning route for photocatalytic applications. Uniform Bi12MO20 (M = Ti, Ge, Si) nanofibers with diameters of 100-200 nm and lengths of up to several millimeters can be readily obtained by thermally treating the electrospun precursors. The photocatalytic activities of these nanofibers for degradation of rhodamine B (RhB) were explored under UV-visible light. The band structure and the degradation mechanisms were also discussed. The fibrous photocatalysts of Bi12TiO20, Bi12SiO20 and Bi12GeO20 exhibit different photocatalytic behaviours, which are attributed to the microstructure, band gap, and electronic structures.

Hydrothermal synthesis, influencing factors and excellent photocatalytic performance of novel nanoparticle-assembled Bi25FeO40tetrahedrons

“…The intensity and shape of the peaks indicate that the BFO product is highly crystallized. [25][26][27][28][29][30] The vibration spectra of the as-prepared BFO product were further assessed by Raman and FT-IR spectroscopy. More detailed surface composition and valence of some elements in the BFO sample was checked by XPS ( Fig.…”

On structure and methylene blue degradation activity of an Aurivillius-type photocatalyst of Bi4V2O11 nanoparticles

“…The repulsive force due to existence of lone pair in the lattices can apply to other bonding schemes generally causing a heavy distortion of the structure. Bi 3+ -containing oxides have been widely developed for potential visible light active photocatalysts due to the peculiar electronic structure in these materials such as BiVO 4 [13], Bi 2 O 3 [14], Bi 2 WO 6 [15], Bi 2 MoO 6 [16], Bi 20 TiO 32 [17], Bi 12 MO 20 (M = Ti, Ge, Si) [18], and so on. Among them BiVO 4 -based photocatalysts have been intensively reported [11,13,[19][20][21][22][23][24] which possess optical absorption and photocatalytic activities.…”

Review of one-dimensional and two-dimensional nanostructured materials for hydrogen generation

“…[186][187][188][189][190][191][192][193][194][195][196][197] In the context of H 2 production, TiO 2 electrospun NFs (Fig. 19) perform better than nanostructures produced by hydrothermal synthesis, where process parameters such as the calcination temperature, crystallinity and SA are determining factors (Fig.…”