Crystal phase transition of β-Bi2O3 and its enhanced photocatalytic activities for tetracycline hydrochloride

Fuel‐dependent, shape‐selective, distinct blue and green photoluminescence from α‐Bi2O3 and β‐Bi2O3 synthesised using microwave combustion

“…The two fuelled samples show two different Bi4f peaks, that is, at 159.1 and 158.5 eV for citric acid and oxalic acid syntheses, respectively. The Bi4f peaks at 159.1 and 158.5 eV can be attributed to β‐Bi 2 O 3 and α‐Bi 2 O 3 , respectively [45]. The spin–orbital splitting between Bi4f 7/2 and Bi4f 5/2 peaks is 5.3 eV, which is characteristic of Bi 2 O 3 [15].…”

Sunlight driven isotropic β-Bi2O3 with high charge-carrier mobility for the efficient degradation of bisphenol A and phenol

“…Bi 2 O 3 is a narrow band gap semiconductor with crystal structures of monoclinic α phase, tetragonal β phase, and cubic γ phase, which has been investigated widely in the photocatalytic field. 14,15 The narrower band gap and the tunnel structure of β-Bi 2 O 3 lead to higher photocatalytic activity than those of α or γ phases. 16 The degradation efficiency for RY160 dye increased from 14% to 26% after four hours of simulated sunlight because of the γ-Bi 2 O 3 to β-Bi 2 O 3 transition.…”

Tuning the heterophase junction in Bi2O3 hybrid crystals with enhanced photocatalytic activity

“…40 A similar binding energy shift in lattice oxygen due to different polymorphs has been displayed in the α/β-Bi 2 O 3 hetero-phase junction. 41…”

“…It may imply that the two distinctive structures of Bi binding energy shift in lattice oxygen due to different polymorphs has been displayed in the α/β-Bi 2 O 3 hetero-phase junction. 41 Based on the absorbance spectra, the diffuse reflectance measurement is transformed using the Kubelka-Munk function. 42…”