Ammonia-dependent synthesis of (BiO)2OHCl@Bi24O31Cl10 heterostructures with enhanced visible-light induced photocatalytic activities on levofloxacin removal

Highly efficient photocatalytic degradation over rose-like 1D/2D La(OH)3/(BiO)2OHCl heterostructures boosted by rich oxygen vacancies and enhanced interfacial charge transfer

“…27 Besides, two adjacent peaks with a lower intensity located at binding energies of 158.18 and 163.68 eV are referred to low-valence state Bi 3– x due to the presence of OVs. 26 In Fig. 4c, two sets of bimodal peaks ascribed to La 3d 3/2 and La 3d 5/2 of BOL-2 can be fitted into four peaks at binding energies of 851.83/855.44 eV and 834.80/838.79 eV, respectively, suggesting the presence of La 3+ in the form of La(OH) 3 .…”

“…9 Herein, under alkaline conditions with a solution pH of 10.0, Cl − between the [Bi 2 O 2 ] 2+ layers of BiOCl could be partially replaced by OH − in the solution via an ion-exchange process, leading to the formation of (BiO) 2 OHCl. 26 After continuous stirring for 5 min, a certain amount of La(NO 3 ) 3 ·6H 2 O (0.05 g, 0.1 g, 0.2 g or 0.3 g) was added, and the obtained mixture was stirred for another 1 h at room temperature before transferring to a polytetrafluoroethylene reactor for reaction at 180 °C for 20 h. Once the sealed reactor was cooled to room temperature, solid powder materials were obtained by centrifugal separation, followed by repeated washing with DI water and ethanol. The final product was dried at 60 °C for 12 h and named BOL- x ( x = 1–4), corresponding to Bi/La molar ratios of 8 : 1, 4 : 1, 2 : 1 or 4 : 3, respectively.…”

“…S5d †), verifying the important role of OVs during the visiblelight-induced photocatalytic process. Table S2 † compares the removal efficiency of BOL-2 towards antibiotics with other bismuth-based catalysts 11,24,26,34 reported in the literature. As can be seen, BOL-2 synthesized in this work exhibits a higher TC removal efficiency than most of our selected Bi-based photocatalysts under simulated visible light.…”

“…25 However, until now, only a few types of (BiO) 2 OHCl-based heterojunction catalysts such as (BiO) 2 OHCl@Bi 24 O 31 Cl 10 (ref. 26) and g-C 3 N 4 /(BiO) 2 (OH) x Cl 2− x (ref. 27) have been reported with enhanced photocatalytic performance.…”

Enhancing Electrocatalytic Water Oxidation of NiFe-LDH Nanosheets via Bismuth-Induced Electronic Structure Engineering

“…It is necessary to explore suitable nanocomponents combined with NiFe LDH to enhance the electrocatalytic activity and durability. Bismuth (Bi) has plasmonic resonance properties, so it is widely used in photo (photoelectric) catalysis , and the photodegradation of organic pollutants. , Nowadays, Bi-based catalysts have attracted extensive attention due to their outstanding activity and high environmental stability in small-molecule electrocatalytic processes such as electrocatalytic carbon dioxide reduction, − nitrogen reduction, and oxidation of alcohols . Bi-based materials are also used in electrocatalytic water splitting for hydrogen production, but their catalytic activity is unsatisfactory.…”