.png){kind=icon}
.png){kind=icon}
Return
Molten Salt-Mediated A-Site Cation Engineering of ABi2Nb2O9 (A = Sr, Ca, and Ba) for High-Efficiency Piezocatalytic H2O2 Production and Pollutant Degradation
.png){kind=icon}
PRE
AI
S
J
K
Y
Y
Y
H
J
DOI：10.1002/cctc.70894.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Niobates have emerged as promising candidates for environmental catalysis, particularly in the realm of piezocatalysis, owing to their distinctive layered architectures and robust physicochemical performance. In this study, we report the successful fabrication of A-site cation-tailored ABi2Nb2O9 (A = Sr, Ca, and Ba) layered oxides via a molten salt strategy. Notably, the molten salt-synthesized SrBi2Nb2O9 exhibits superior piezocatalytic performance in H2O2 evolution with a yield reaching 1836.1 µmol g−1 h−1, approximately 2.1 times higher than that of SrBi2Nb2O9 prepared by the solid-state method. Furthermore, this material demonstrates exceptional piezocatalytic activity, degrading 98.0% of Rhodamine B within 75 min, with a reaction rate constant of 0.04966 min−1. In addition, the catalyst shows durable stability, maintaining 97% of its original activity after four cycles. The influence of environmental factors, including solution pH and inorganic anions (Cl− and CO32−), was also systematically evaluated. This work elucidates that the synergistic integration of A-site cation engineering and molten salt synthesis effectively modulates the piezoelectric response of ABi2Nb2O9 (A = Sr, Ca, and Ba), offering new insights and a viable pathway for the design of novel, high-performance piezocatalysts for environmental remediation.
Keywords:
A-site cation engineering
H2O2 production
layered niobates
molten salt synthesis
piezocatalysis
Journal
IF:
3.9
Papers:
9.4K
Citations:
2.5W
Organization
Cited Papers