Effects of selective leaching of bismuth oxide sheets in triple-layered Aurivillius phases on their photocatalytic activities

Preparation and structure of a new layered organic–inorganic hybrid between the protonated form of a perovskite Bi2SrTa2O9 and tetraphenylporphyrin by the intercalation behavior

“…6 shows the UV-vis absorption spectra of Bi 2 SrTa 2 O 9 and its acid-treated product HST. After acid treatment, the spectrum represents an evident blue-shift from 302.0 to 250.5 nm; coincidently, the similar blue-shifts were found in some other Aurivillius-type compounds, such as Bi 2 CaNaTa 3 O 12 and Bi 2 SrNaNb 3 O 12 [15], after being transformed into their correspondent protonated forms. The difference represents as follows: Bi 2 SrTa 2 O 9 is a double-layered Aurivillius phase, while the other two compounds belong to the family of triple-layered Aurivillius phases.…”

Synthesis of porous Bi4Ti3O12 nanofibers by electrospinning and their enhanced visible-light-driven photocatalytic properties

“…Bi 4 Ti 3 O 12 belongs to the Aurivillius phase with layered perovskites, consisting of bismuth oxide layers and perovskite-type units with TiO 6 octahedral layers, which is assumed to motivate the separation of photogenerated electron-hole pairs and then improve the photocatalytic activity of the photocatalyst. 49 (2) The band structure. Some localized Bi 6p-, 6s-and O 2prelated gap states are introduced in Bi 4 Ti 3 O 12 .…”

Efficient Microwave-Assisted Functionalization of the Aurivillius-Phase Bi2SrTa2O9

“…9,10 Among layered materials, layered perovskites, and layered compounds with perovskite-related structures remain a favorite subject of study in solid-state chemistry and materials science. They exhibit especially interesting physical properties such as fatigue-free ferroelectricity, 11−19 luminescence, 20 photovoltaic, 21 photocatalytic, 22 and photoelectrochemical 23 activities or magnetic properties. 24,25 Ion-exchangeable perovskites are particularly interesting in that it is possible to modulate finely their structures and properties by intercalation of various molecules, while keeping the perovskite-like slabs [A m−1 B m O 3m+1 ] intact.…”